./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe027_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/safe027_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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --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 20:48:41,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:48:41,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:48:41,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:48:41,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:48:41,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:48:41,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:48:41,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:48:41,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:48:41,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:48:41,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:48:41,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:48:41,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:48:41,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:48:41,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:48:41,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:48:41,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:48:41,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:48:41,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:48:41,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:48:41,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:48:41,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:48:41,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:48:41,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:48:41,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:48:41,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:48:41,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:48:41,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:48:41,407 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:48:41,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:48:41,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:48:41,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:48:41,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:48:41,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:48:41,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:48:41,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:48:41,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:48:41,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:48:41,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:48:41,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:48:41,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:48:41,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:48:41,446 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:48:41,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:48:41,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:48:41,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:48:41,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:48:41,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:48:41,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:48:41,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:48:41,450 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:48:41,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:48:41,450 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:48:41,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:48:41,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:48:41,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:48:41,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:48:41,451 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:48:41,452 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:48:41,452 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:48:41,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:48:41,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:48:41,452 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:48:41,452 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:48:41,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:48:41,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:48:41,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:48:41,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:48:41,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:48:41,453 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:48:41,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:48:41,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:48:41,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:48:41,454 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:48:41,454 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:48:41,455 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:48:41,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:48:41,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:48:41,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:48:41,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:48:41,757 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:48:41,757 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:48:41,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:48:42,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:48:43,197 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:48:43,197 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:48:43,207 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcac3a3d/c714a71129f64c3d9b200cd233c816cd/FLAG891ff2f9a [2023-08-29 20:48:43,220 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebcac3a3d/c714a71129f64c3d9b200cd233c816cd [2023-08-29 20:48:43,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:48:43,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:48:43,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:48:43,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:48:43,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:48:43,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f93683b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43, skipping insertion in model container [2023-08-29 20:48:43,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:48:43,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:48:43,390 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:48:43,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:48:43,597 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:48:43,609 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:48:43,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:48:43,740 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:48:43,741 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:48:43,746 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:48:43,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43 WrapperNode [2023-08-29 20:48:43,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:48:43,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:48:43,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:48:43,749 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:48:43,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,810 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2023-08-29 20:48:43,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:48:43,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:48:43,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:48:43,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:48:43,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,844 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:48:43,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:48:43,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:48:43,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:48:43,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (1/1) ... [2023-08-29 20:48:43,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:48:43,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:48:43,886 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 20:48:43,910 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 20:48:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:48:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:48:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:48:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:48:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:48:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:48:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:48:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:48:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:48:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:48:43,922 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:48:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-29 20:48:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-29 20:48:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:48:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:48:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:48:43,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:48:43,924 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 20:48:44,090 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:48:44,092 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:48:44,262 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:48:44,267 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:48:44,267 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:48:44,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:48:44 BoogieIcfgContainer [2023-08-29 20:48:44,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:48:44,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:48:44,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:48:44,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:48:44,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:48:43" (1/3) ... [2023-08-29 20:48:44,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620a1b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:48:44, skipping insertion in model container [2023-08-29 20:48:44,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:48:43" (2/3) ... [2023-08-29 20:48:44,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620a1b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:48:44, skipping insertion in model container [2023-08-29 20:48:44,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:48:44" (3/3) ... [2023-08-29 20:48:44,277 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:48:44,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:48:44,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 20:48:44,291 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:48:44,354 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:48:44,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 244 flow [2023-08-29 20:48:44,458 INFO L130 PetriNetUnfolder]: 2/108 cut-off events. [2023-08-29 20:48:44,461 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:48:44,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 108 events. 2/108 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-29 20:48:44,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 244 flow [2023-08-29 20:48:44,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 104 transitions, 220 flow [2023-08-29 20:48:44,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:48:44,495 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 104 transitions, 220 flow [2023-08-29 20:48:44,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 104 transitions, 220 flow [2023-08-29 20:48:44,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 104 transitions, 220 flow [2023-08-29 20:48:44,524 INFO L130 PetriNetUnfolder]: 2/104 cut-off events. [2023-08-29 20:48:44,524 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:48:44,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 2/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-08-29 20:48:44,526 INFO L119 LiptonReduction]: Number of co-enabled transitions 2250 [2023-08-29 20:48:47,557 INFO L134 LiptonReduction]: Checked pairs total: 4371 [2023-08-29 20:48:47,557 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-29 20:48:47,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:48:47,574 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;@70de2c2a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:48:47,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-29 20:48:47,575 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:48:47,576 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:48:47,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:47,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:48:47,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:47,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:47,581 INFO L85 PathProgramCache]: Analyzing trace with hash 395, now seen corresponding path program 1 times [2023-08-29 20:48:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473397806] [2023-08-29 20:48:47,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:47,686 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 20:48:47,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:47,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473397806] [2023-08-29 20:48:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473397806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:47,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:48:47,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14841345] [2023-08-29 20:48:47,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:47,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:48:47,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:47,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:48:47,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:48:47,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 222 [2023-08-29 20:48:47,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 20:48:47,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:47,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 222 [2023-08-29 20:48:47,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:47,912 INFO L130 PetriNetUnfolder]: 920/1333 cut-off events. [2023-08-29 20:48:47,912 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 20:48:47,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 1333 events. 920/1333 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5699 event pairs, 920 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 2730. Up to 1324 conditions per place. [2023-08-29 20:48:47,928 INFO L137 encePairwiseOnDemand]: 213/222 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-29 20:48:47,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 21 transitions, 92 flow [2023-08-29 20:48:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:48:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:48:47,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 238 transitions. [2023-08-29 20:48:47,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536036036036036 [2023-08-29 20:48:47,946 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 238 transitions. [2023-08-29 20:48:47,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 238 transitions. [2023-08-29 20:48:47,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:47,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 238 transitions. [2023-08-29 20:48:47,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 119.0) internal successors, (238), 2 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 20:48:47,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 20:48:47,960 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states 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 20:48:47,962 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 2 states and 238 transitions. [2023-08-29 20:48:47,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 21 transitions, 92 flow [2023-08-29 20:48:47,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:48:47,969 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 50 flow [2023-08-29 20:48:47,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=21} [2023-08-29 20:48:47,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 20:48:47,978 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 50 flow [2023-08-29 20:48:47,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 20:48:47,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:47,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:47,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:48:47,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:47,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:47,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1231230159, now seen corresponding path program 1 times [2023-08-29 20:48:47,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:47,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199238356] [2023-08-29 20:48:47,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:47,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:48,472 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 20:48:48,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199238356] [2023-08-29 20:48:48,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199238356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:48,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:48,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:48:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426578429] [2023-08-29 20:48:48,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:48,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:48:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:48:48,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:48:48,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 222 [2023-08-29 20:48:48,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 20:48:48,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:48,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 222 [2023-08-29 20:48:48,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:48,762 INFO L130 PetriNetUnfolder]: 1950/2781 cut-off events. [2023-08-29 20:48:48,763 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:48:48,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5695 conditions, 2781 events. 1950/2781 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12574 event pairs, 612 based on Foata normal form. 0/2646 useless extension candidates. Maximal degree in co-relation 5692. Up to 2317 conditions per place. [2023-08-29 20:48:48,776 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 33 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2023-08-29 20:48:48,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 170 flow [2023-08-29 20:48:48,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:48:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:48:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-29 20:48:48,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496996996996997 [2023-08-29 20:48:48,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-29 20:48:48,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-29 20:48:48,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:48,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-29 20:48:48,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 20:48:48,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 20:48:48,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 20:48:48,784 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 50 flow. Second operand 3 states and 331 transitions. [2023-08-29 20:48:48,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 170 flow [2023-08-29 20:48:48,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:48:48,785 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 96 flow [2023-08-29 20:48:48,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-08-29 20:48:48,786 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places. [2023-08-29 20:48:48,786 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 96 flow [2023-08-29 20:48:48,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 20:48:48,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:48,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:48,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:48:48,787 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:48,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:48,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1231230146, now seen corresponding path program 1 times [2023-08-29 20:48:48,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:48,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468240861] [2023-08-29 20:48:48,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:48,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:49,361 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 20:48:49,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:49,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468240861] [2023-08-29 20:48:49,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468240861] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:49,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:49,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:48:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771385457] [2023-08-29 20:48:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:49,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:48:49,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:48:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:48:49,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 222 [2023-08-29 20:48:49,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 20:48:49,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:49,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 222 [2023-08-29 20:48:49,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:49,835 INFO L130 PetriNetUnfolder]: 1271/1948 cut-off events. [2023-08-29 20:48:49,835 INFO L131 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2023-08-29 20:48:49,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 1948 events. 1271/1948 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9410 event pairs, 285 based on Foata normal form. 45/1918 useless extension candidates. Maximal degree in co-relation 4726. Up to 1438 conditions per place. [2023-08-29 20:48:49,849 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 34 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2023-08-29 20:48:49,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 46 transitions, 242 flow [2023-08-29 20:48:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:48:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:48:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 569 transitions. [2023-08-29 20:48:49,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4271771771771772 [2023-08-29 20:48:49,852 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 569 transitions. [2023-08-29 20:48:49,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 569 transitions. [2023-08-29 20:48:49,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:49,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 569 transitions. [2023-08-29 20:48:49,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 94.83333333333333) internal successors, (569), 6 states have internal predecessors, (569), 0 states have call successors, (0), 0 states 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 20:48:49,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:49,858 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:49,858 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 96 flow. Second operand 6 states and 569 transitions. [2023-08-29 20:48:49,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 46 transitions, 242 flow [2023-08-29 20:48:49,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:48:49,869 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 119 flow [2023-08-29 20:48:49,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2023-08-29 20:48:49,871 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-08-29 20:48:49,873 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 119 flow [2023-08-29 20:48:49,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.66666666666667) internal successors, (538), 6 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 20:48:49,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:49,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:49,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:48:49,875 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:49,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 430305109, now seen corresponding path program 1 times [2023-08-29 20:48:49,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:49,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867680485] [2023-08-29 20:48:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:49,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:50,280 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 20:48:50,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867680485] [2023-08-29 20:48:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867680485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:50,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:50,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:48:50,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944251196] [2023-08-29 20:48:50,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:50,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:48:50,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:48:50,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:48:50,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 222 [2023-08-29 20:48:50,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 20:48:50,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:50,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 222 [2023-08-29 20:48:50,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:50,677 INFO L130 PetriNetUnfolder]: 1169/1768 cut-off events. [2023-08-29 20:48:50,678 INFO L131 PetriNetUnfolder]: For 732/738 co-relation queries the response was YES. [2023-08-29 20:48:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4554 conditions, 1768 events. 1169/1768 cut-off events. For 732/738 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8373 event pairs, 874 based on Foata normal form. 18/1573 useless extension candidates. Maximal degree in co-relation 4547. Up to 1376 conditions per place. [2023-08-29 20:48:50,690 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 35 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2023-08-29 20:48:50,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 280 flow [2023-08-29 20:48:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:48:50,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:48:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 571 transitions. [2023-08-29 20:48:50,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4286786786786787 [2023-08-29 20:48:50,693 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 571 transitions. [2023-08-29 20:48:50,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 571 transitions. [2023-08-29 20:48:50,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:50,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 571 transitions. [2023-08-29 20:48:50,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 20:48:50,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:50,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:50,698 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 119 flow. Second operand 6 states and 571 transitions. [2023-08-29 20:48:50,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 280 flow [2023-08-29 20:48:50,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 50 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:48:50,700 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 191 flow [2023-08-29 20:48:50,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-08-29 20:48:50,701 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-29 20:48:50,701 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 191 flow [2023-08-29 20:48:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.83333333333333) internal successors, (539), 6 states have internal predecessors, (539), 0 states have call successors, (0), 0 states 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 20:48:50,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:50,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:48:50,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:50,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:50,702 INFO L85 PathProgramCache]: Analyzing trace with hash 901433360, now seen corresponding path program 1 times [2023-08-29 20:48:50,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013952127] [2023-08-29 20:48:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:48:51,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:51,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013952127] [2023-08-29 20:48:51,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013952127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:51,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:48:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804096062] [2023-08-29 20:48:51,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:48:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:48:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:48:51,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 222 [2023-08-29 20:48:51,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:51,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:51,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 222 [2023-08-29 20:48:51,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:51,616 INFO L130 PetriNetUnfolder]: 1652/2470 cut-off events. [2023-08-29 20:48:51,616 INFO L131 PetriNetUnfolder]: For 1895/1901 co-relation queries the response was YES. [2023-08-29 20:48:51,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 2470 events. 1652/2470 cut-off events. For 1895/1901 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12623 event pairs, 657 based on Foata normal form. 60/2254 useless extension candidates. Maximal degree in co-relation 6671. Up to 1453 conditions per place. [2023-08-29 20:48:51,633 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 34 selfloop transitions, 10 changer transitions 11/59 dead transitions. [2023-08-29 20:48:51,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 59 transitions, 375 flow [2023-08-29 20:48:51,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:48:51,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:48:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 556 transitions. [2023-08-29 20:48:51,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2023-08-29 20:48:51,635 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 556 transitions. [2023-08-29 20:48:51,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 556 transitions. [2023-08-29 20:48:51,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:51,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 556 transitions. [2023-08-29 20:48:51,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.66666666666667) internal successors, (556), 6 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 20:48:51,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:51,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:51,641 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 191 flow. Second operand 6 states and 556 transitions. [2023-08-29 20:48:51,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 59 transitions, 375 flow [2023-08-29 20:48:51,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 368 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:48:51,650 INFO L231 Difference]: Finished difference. Result has 53 places, 34 transitions, 216 flow [2023-08-29 20:48:51,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=53, PETRI_TRANSITIONS=34} [2023-08-29 20:48:51,652 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-29 20:48:51,652 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 34 transitions, 216 flow [2023-08-29 20:48:51,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.71428571428571) internal successors, (607), 7 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:51,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:51,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:51,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:48:51,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:51,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash 852425274, now seen corresponding path program 2 times [2023-08-29 20:48:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226256467] [2023-08-29 20:48:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:52,047 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 20:48:52,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:52,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226256467] [2023-08-29 20:48:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226256467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:52,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:52,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:48:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551301255] [2023-08-29 20:48:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:52,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:48:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:52,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:48:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:48:52,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 222 [2023-08-29 20:48:52,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 34 transitions, 216 flow. Second operand has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:52,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:52,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 222 [2023-08-29 20:48:52,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:52,600 INFO L130 PetriNetUnfolder]: 1532/2345 cut-off events. [2023-08-29 20:48:52,600 INFO L131 PetriNetUnfolder]: For 3020/3038 co-relation queries the response was YES. [2023-08-29 20:48:52,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2345 events. 1532/2345 cut-off events. For 3020/3038 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 12279 event pairs, 822 based on Foata normal form. 60/2162 useless extension candidates. Maximal degree in co-relation 6676. Up to 1488 conditions per place. [2023-08-29 20:48:52,616 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 27 selfloop transitions, 3 changer transitions 23/57 dead transitions. [2023-08-29 20:48:52,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 396 flow [2023-08-29 20:48:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:48:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:48:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 633 transitions. [2023-08-29 20:48:52,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40733590733590735 [2023-08-29 20:48:52,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 633 transitions. [2023-08-29 20:48:52,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 633 transitions. [2023-08-29 20:48:52,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:52,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 633 transitions. [2023-08-29 20:48:52,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 90.42857142857143) internal successors, (633), 7 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 20:48:52,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 20:48:52,623 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 20:48:52,623 INFO L175 Difference]: Start difference. First operand has 53 places, 34 transitions, 216 flow. Second operand 7 states and 633 transitions. [2023-08-29 20:48:52,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 396 flow [2023-08-29 20:48:52,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 340 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-08-29 20:48:52,633 INFO L231 Difference]: Finished difference. Result has 50 places, 32 transitions, 167 flow [2023-08-29 20:48:52,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=50, PETRI_TRANSITIONS=32} [2023-08-29 20:48:52,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-29 20:48:52,634 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 32 transitions, 167 flow [2023-08-29 20:48:52,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:52,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:52,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:48:52,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:52,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 520784416, now seen corresponding path program 3 times [2023-08-29 20:48:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:52,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563142457] [2023-08-29 20:48:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:52,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:53,098 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 20:48:53,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:53,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563142457] [2023-08-29 20:48:53,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563142457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:53,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:53,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:48:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35625607] [2023-08-29 20:48:53,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:53,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:48:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:48:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:48:53,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-29 20:48:53,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 32 transitions, 167 flow. Second operand has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 20:48:53,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:53,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-29 20:48:53,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:53,647 INFO L130 PetriNetUnfolder]: 1430/2183 cut-off events. [2023-08-29 20:48:53,648 INFO L131 PetriNetUnfolder]: For 2472/2478 co-relation queries the response was YES. [2023-08-29 20:48:53,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5923 conditions, 2183 events. 1430/2183 cut-off events. For 2472/2478 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 11379 event pairs, 705 based on Foata normal form. 80/2075 useless extension candidates. Maximal degree in co-relation 5911. Up to 1106 conditions per place. [2023-08-29 20:48:53,661 INFO L137 encePairwiseOnDemand]: 214/222 looper letters, 41 selfloop transitions, 10 changer transitions 18/73 dead transitions. [2023-08-29 20:48:53,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 73 transitions, 473 flow [2023-08-29 20:48:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:48:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:48:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 714 transitions. [2023-08-29 20:48:53,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40202702702702703 [2023-08-29 20:48:53,664 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 714 transitions. [2023-08-29 20:48:53,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 714 transitions. [2023-08-29 20:48:53,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:53,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 714 transitions. [2023-08-29 20:48:53,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.25) internal successors, (714), 8 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 20:48:53,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 20:48:53,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 20:48:53,669 INFO L175 Difference]: Start difference. First operand has 50 places, 32 transitions, 167 flow. Second operand 8 states and 714 transitions. [2023-08-29 20:48:53,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 73 transitions, 473 flow [2023-08-29 20:48:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 445 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-29 20:48:53,675 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 249 flow [2023-08-29 20:48:53,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-29 20:48:53,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-29 20:48:53,676 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 249 flow [2023-08-29 20:48:53,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 20:48:53,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:53,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:53,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:48:53,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:53,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 627323657, now seen corresponding path program 1 times [2023-08-29 20:48:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799085524] [2023-08-29 20:48:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:53,815 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 20:48:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:53,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799085524] [2023-08-29 20:48:53,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799085524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:53,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:53,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:48:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677995588] [2023-08-29 20:48:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:53,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:48:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:48:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:48:53,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-08-29 20:48:53,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 20:48:53,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:53,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-08-29 20:48:53,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:54,045 INFO L130 PetriNetUnfolder]: 1622/2392 cut-off events. [2023-08-29 20:48:54,045 INFO L131 PetriNetUnfolder]: For 4575/4575 co-relation queries the response was YES. [2023-08-29 20:48:54,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7203 conditions, 2392 events. 1622/2392 cut-off events. For 4575/4575 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10517 event pairs, 312 based on Foata normal form. 81/2473 useless extension candidates. Maximal degree in co-relation 7189. Up to 866 conditions per place. [2023-08-29 20:48:54,068 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 62 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-08-29 20:48:54,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 517 flow [2023-08-29 20:48:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:48:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:48:54,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 524 transitions. [2023-08-29 20:48:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720720720720721 [2023-08-29 20:48:54,070 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 524 transitions. [2023-08-29 20:48:54,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 524 transitions. [2023-08-29 20:48:54,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:54,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 524 transitions. [2023-08-29 20:48:54,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 20:48:54,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:54,074 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:54,074 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 249 flow. Second operand 5 states and 524 transitions. [2023-08-29 20:48:54,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 517 flow [2023-08-29 20:48:54,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 493 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 20:48:54,084 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 305 flow [2023-08-29 20:48:54,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-08-29 20:48:54,085 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-29 20:48:54,086 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 305 flow [2023-08-29 20:48:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.4) internal successors, (487), 5 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 20:48:54,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:54,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:54,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:48:54,087 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:54,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:54,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1843112360, now seen corresponding path program 1 times [2023-08-29 20:48:54,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:54,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039220144] [2023-08-29 20:48:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:54,475 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 20:48:54,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:54,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039220144] [2023-08-29 20:48:54,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039220144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:54,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:54,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:48:54,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312864632] [2023-08-29 20:48:54,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:54,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:48:54,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:48:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:48:54,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 222 [2023-08-29 20:48:54,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 305 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 20:48:54,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:54,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 222 [2023-08-29 20:48:54,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:55,057 INFO L130 PetriNetUnfolder]: 1437/2276 cut-off events. [2023-08-29 20:48:55,057 INFO L131 PetriNetUnfolder]: For 4401/4409 co-relation queries the response was YES. [2023-08-29 20:48:55,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6880 conditions, 2276 events. 1437/2276 cut-off events. For 4401/4409 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 12650 event pairs, 533 based on Foata normal form. 41/2223 useless extension candidates. Maximal degree in co-relation 6865. Up to 1431 conditions per place. [2023-08-29 20:48:55,072 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 26 selfloop transitions, 8 changer transitions 21/61 dead transitions. [2023-08-29 20:48:55,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 61 transitions, 467 flow [2023-08-29 20:48:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:48:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:48:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 624 transitions. [2023-08-29 20:48:55,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015444015444015 [2023-08-29 20:48:55,075 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 624 transitions. [2023-08-29 20:48:55,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 624 transitions. [2023-08-29 20:48:55,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:55,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 624 transitions. [2023-08-29 20:48:55,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.14285714285714) internal successors, (624), 7 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 20:48:55,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 20:48:55,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 20:48:55,081 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 305 flow. Second operand 7 states and 624 transitions. [2023-08-29 20:48:55,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 61 transitions, 467 flow [2023-08-29 20:48:55,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:48:55,089 INFO L231 Difference]: Finished difference. Result has 60 places, 37 transitions, 265 flow [2023-08-29 20:48:55,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=265, PETRI_PLACES=60, PETRI_TRANSITIONS=37} [2023-08-29 20:48:55,090 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-29 20:48:55,090 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 37 transitions, 265 flow [2023-08-29 20:48:55,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states 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 20:48:55,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:55,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:55,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:48:55,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:55,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:55,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2015881250, now seen corresponding path program 2 times [2023-08-29 20:48:55,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371635238] [2023-08-29 20:48:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:55,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:55,518 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 20:48:55,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:55,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371635238] [2023-08-29 20:48:55,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371635238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:55,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:55,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:48:55,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492113713] [2023-08-29 20:48:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:55,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:48:55,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:55,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:48:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:48:55,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 222 [2023-08-29 20:48:55,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 37 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 20:48:55,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:55,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 222 [2023-08-29 20:48:55,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:55,994 INFO L130 PetriNetUnfolder]: 910/1476 cut-off events. [2023-08-29 20:48:55,994 INFO L131 PetriNetUnfolder]: For 3477/3484 co-relation queries the response was YES. [2023-08-29 20:48:56,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4428 conditions, 1476 events. 910/1476 cut-off events. For 3477/3484 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7395 event pairs, 215 based on Foata normal form. 59/1501 useless extension candidates. Maximal degree in co-relation 4411. Up to 668 conditions per place. [2023-08-29 20:48:56,004 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 27 selfloop transitions, 9 changer transitions 17/57 dead transitions. [2023-08-29 20:48:56,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 420 flow [2023-08-29 20:48:56,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:48:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:48:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 704 transitions. [2023-08-29 20:48:56,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963963963963964 [2023-08-29 20:48:56,008 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 704 transitions. [2023-08-29 20:48:56,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 704 transitions. [2023-08-29 20:48:56,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:56,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 704 transitions. [2023-08-29 20:48:56,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.0) internal successors, (704), 8 states have internal predecessors, (704), 0 states have call successors, (0), 0 states 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 20:48:56,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 20:48:56,013 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 20:48:56,013 INFO L175 Difference]: Start difference. First operand has 60 places, 37 transitions, 265 flow. Second operand 8 states and 704 transitions. [2023-08-29 20:48:56,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 420 flow [2023-08-29 20:48:56,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 383 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-29 20:48:56,018 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 206 flow [2023-08-29 20:48:56,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=206, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2023-08-29 20:48:56,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-29 20:48:56,020 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 206 flow [2023-08-29 20:48:56,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.85714285714286) internal successors, (587), 7 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 20:48:56,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:56,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:48:56,021 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:56,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1206296490, now seen corresponding path program 1 times [2023-08-29 20:48:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:56,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857861604] [2023-08-29 20:48:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:56,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:56,159 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 20:48:56,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:56,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857861604] [2023-08-29 20:48:56,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857861604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:56,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:56,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:48:56,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342656410] [2023-08-29 20:48:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:56,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:48:56,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:56,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:48:56,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:48:56,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-08-29 20:48:56,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 20:48:56,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:56,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-08-29 20:48:56,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:56,340 INFO L130 PetriNetUnfolder]: 1032/1573 cut-off events. [2023-08-29 20:48:56,341 INFO L131 PetriNetUnfolder]: For 2297/2297 co-relation queries the response was YES. [2023-08-29 20:48:56,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4761 conditions, 1573 events. 1032/1573 cut-off events. For 2297/2297 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 6634 event pairs, 622 based on Foata normal form. 54/1627 useless extension candidates. Maximal degree in co-relation 4746. Up to 704 conditions per place. [2023-08-29 20:48:56,350 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 52 selfloop transitions, 10 changer transitions 0/62 dead transitions. [2023-08-29 20:48:56,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 62 transitions, 462 flow [2023-08-29 20:48:56,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:48:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:48:56,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2023-08-29 20:48:56,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765765765765766 [2023-08-29 20:48:56,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 529 transitions. [2023-08-29 20:48:56,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 529 transitions. [2023-08-29 20:48:56,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:56,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 529 transitions. [2023-08-29 20:48:56,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states 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 20:48:56,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:56,357 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:56,357 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 206 flow. Second operand 5 states and 529 transitions. [2023-08-29 20:48:56,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 62 transitions, 462 flow [2023-08-29 20:48:56,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 418 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-29 20:48:56,363 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 259 flow [2023-08-29 20:48:56,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=259, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-08-29 20:48:56,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-29 20:48:56,363 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 259 flow [2023-08-29 20:48:56,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.6) internal successors, (488), 5 states have internal predecessors, (488), 0 states have call successors, (0), 0 states 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 20:48:56,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:56,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:56,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:48:56,365 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:56,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:56,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1931066531, now seen corresponding path program 1 times [2023-08-29 20:48:56,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:56,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747780261] [2023-08-29 20:48:56,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:56,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:56,692 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 20:48:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747780261] [2023-08-29 20:48:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747780261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:48:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503195982] [2023-08-29 20:48:56,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:56,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:48:56,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:48:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:48:56,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 222 [2023-08-29 20:48:56,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 20:48:56,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:56,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 222 [2023-08-29 20:48:56,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:57,022 INFO L130 PetriNetUnfolder]: 527/895 cut-off events. [2023-08-29 20:48:57,022 INFO L131 PetriNetUnfolder]: For 3126/3126 co-relation queries the response was YES. [2023-08-29 20:48:57,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 895 events. 527/895 cut-off events. For 3126/3126 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4148 event pairs, 246 based on Foata normal form. 72/946 useless extension candidates. Maximal degree in co-relation 2715. Up to 726 conditions per place. [2023-08-29 20:48:57,027 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 22 selfloop transitions, 7 changer transitions 2/33 dead transitions. [2023-08-29 20:48:57,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 33 transitions, 261 flow [2023-08-29 20:48:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:48:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:48:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 541 transitions. [2023-08-29 20:48:57,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40615615615615613 [2023-08-29 20:48:57,030 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 541 transitions. [2023-08-29 20:48:57,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 541 transitions. [2023-08-29 20:48:57,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:57,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 541 transitions. [2023-08-29 20:48:57,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 90.16666666666667) internal successors, (541), 6 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 20:48:57,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:57,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:57,035 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 259 flow. Second operand 6 states and 541 transitions. [2023-08-29 20:48:57,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 33 transitions, 261 flow [2023-08-29 20:48:57,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 33 transitions, 239 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-29 20:48:57,038 INFO L231 Difference]: Finished difference. Result has 53 places, 28 transitions, 169 flow [2023-08-29 20:48:57,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=53, PETRI_TRANSITIONS=28} [2023-08-29 20:48:57,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-29 20:48:57,039 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 28 transitions, 169 flow [2023-08-29 20:48:57,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states 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 20:48:57,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:57,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:57,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:48:57,040 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:57,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:57,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1932190888, now seen corresponding path program 1 times [2023-08-29 20:48:57,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:57,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585392737] [2023-08-29 20:48:57,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:57,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:57,143 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 20:48:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:57,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585392737] [2023-08-29 20:48:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585392737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:48:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119547929] [2023-08-29 20:48:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:57,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:48:57,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:57,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:48:57,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:48:57,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 222 [2023-08-29 20:48:57,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 28 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 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 20:48:57,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:57,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 222 [2023-08-29 20:48:57,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:57,259 INFO L130 PetriNetUnfolder]: 378/616 cut-off events. [2023-08-29 20:48:57,260 INFO L131 PetriNetUnfolder]: For 1991/2006 co-relation queries the response was YES. [2023-08-29 20:48:57,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1900 conditions, 616 events. 378/616 cut-off events. For 1991/2006 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2684 event pairs, 104 based on Foata normal form. 35/604 useless extension candidates. Maximal degree in co-relation 1885. Up to 391 conditions per place. [2023-08-29 20:48:57,264 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 52 selfloop transitions, 9 changer transitions 2/65 dead transitions. [2023-08-29 20:48:57,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 473 flow [2023-08-29 20:48:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:48:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:48:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2023-08-29 20:48:57,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4900900900900901 [2023-08-29 20:48:57,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2023-08-29 20:48:57,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2023-08-29 20:48:57,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:57,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2023-08-29 20:48:57,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 20:48:57,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:57,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:57,271 INFO L175 Difference]: Start difference. First operand has 53 places, 28 transitions, 169 flow. Second operand 5 states and 544 transitions. [2023-08-29 20:48:57,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 473 flow [2023-08-29 20:48:57,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 454 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-29 20:48:57,274 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 225 flow [2023-08-29 20:48:57,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-08-29 20:48:57,275 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 14 predicate places. [2023-08-29 20:48:57,275 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 225 flow [2023-08-29 20:48:57,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 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 20:48:57,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:57,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:57,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:48:57,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:57,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:57,277 INFO L85 PathProgramCache]: Analyzing trace with hash 927327223, now seen corresponding path program 1 times [2023-08-29 20:48:57,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:57,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563248139] [2023-08-29 20:48:57,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:57,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:57,397 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 20:48:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563248139] [2023-08-29 20:48:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563248139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:57,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:57,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:48:57,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595692138] [2023-08-29 20:48:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:48:57,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:48:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:48:57,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-08-29 20:48:57,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 225 flow. Second operand has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 20:48:57,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:57,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-08-29 20:48:57,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:57,562 INFO L130 PetriNetUnfolder]: 628/1020 cut-off events. [2023-08-29 20:48:57,562 INFO L131 PetriNetUnfolder]: For 2688/2688 co-relation queries the response was YES. [2023-08-29 20:48:57,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4108 conditions, 1020 events. 628/1020 cut-off events. For 2688/2688 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4461 event pairs, 86 based on Foata normal form. 22/1042 useless extension candidates. Maximal degree in co-relation 4090. Up to 601 conditions per place. [2023-08-29 20:48:57,568 INFO L137 encePairwiseOnDemand]: 216/222 looper letters, 47 selfloop transitions, 8 changer transitions 21/76 dead transitions. [2023-08-29 20:48:57,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 593 flow [2023-08-29 20:48:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:48:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:48:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 615 transitions. [2023-08-29 20:48:57,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2023-08-29 20:48:57,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 615 transitions. [2023-08-29 20:48:57,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 615 transitions. [2023-08-29 20:48:57,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:57,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 615 transitions. [2023-08-29 20:48:57,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states 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 20:48:57,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:57,576 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:57,576 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 225 flow. Second operand 6 states and 615 transitions. [2023-08-29 20:48:57,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 593 flow [2023-08-29 20:48:57,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:48:57,583 INFO L231 Difference]: Finished difference. Result has 62 places, 35 transitions, 237 flow [2023-08-29 20:48:57,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=62, PETRI_TRANSITIONS=35} [2023-08-29 20:48:57,584 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2023-08-29 20:48:57,584 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 35 transitions, 237 flow [2023-08-29 20:48:57,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 20:48:57,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:57,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:57,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:48:57,585 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:57,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:57,586 INFO L85 PathProgramCache]: Analyzing trace with hash 802250158, now seen corresponding path program 1 times [2023-08-29 20:48:57,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:57,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654470943] [2023-08-29 20:48:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:57,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:57,756 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 20:48:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:57,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654470943] [2023-08-29 20:48:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654470943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:57,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:57,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:48:57,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799284053] [2023-08-29 20:48:57,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:57,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:48:57,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:57,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:48:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:48:57,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 222 [2023-08-29 20:48:57,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 35 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 20:48:57,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:57,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 222 [2023-08-29 20:48:57,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:57,893 INFO L130 PetriNetUnfolder]: 343/613 cut-off events. [2023-08-29 20:48:57,893 INFO L131 PetriNetUnfolder]: For 2560/2623 co-relation queries the response was YES. [2023-08-29 20:48:57,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2576 conditions, 613 events. 343/613 cut-off events. For 2560/2623 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2934 event pairs, 38 based on Foata normal form. 43/631 useless extension candidates. Maximal degree in co-relation 2556. Up to 416 conditions per place. [2023-08-29 20:48:57,897 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 49 selfloop transitions, 9 changer transitions 23/84 dead transitions. [2023-08-29 20:48:57,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 737 flow [2023-08-29 20:48:57,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:48:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:48:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2023-08-29 20:48:57,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49024024024024027 [2023-08-29 20:48:57,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2023-08-29 20:48:57,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2023-08-29 20:48:57,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:57,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2023-08-29 20:48:57,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states 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 20:48:57,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:57,905 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 222.0) internal successors, (1554), 7 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states 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 20:48:57,905 INFO L175 Difference]: Start difference. First operand has 62 places, 35 transitions, 237 flow. Second operand 6 states and 653 transitions. [2023-08-29 20:48:57,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 737 flow [2023-08-29 20:48:57,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 719 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:48:57,910 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 302 flow [2023-08-29 20:48:57,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2023-08-29 20:48:57,912 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-29 20:48:57,912 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 302 flow [2023-08-29 20:48:57,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states 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 20:48:57,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:57,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:57,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 20:48:57,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:57,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1691971503, now seen corresponding path program 1 times [2023-08-29 20:48:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:57,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54904276] [2023-08-29 20:48:57,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:57,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:58,033 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 20:48:58,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:58,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54904276] [2023-08-29 20:48:58,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54904276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:58,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:58,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:48:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973525079] [2023-08-29 20:48:58,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:48:58,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:48:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:48:58,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 222 [2023-08-29 20:48:58,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:58,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:58,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 222 [2023-08-29 20:48:58,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:58,170 INFO L130 PetriNetUnfolder]: 206/394 cut-off events. [2023-08-29 20:48:58,171 INFO L131 PetriNetUnfolder]: For 1966/2087 co-relation queries the response was YES. [2023-08-29 20:48:58,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 394 events. 206/394 cut-off events. For 1966/2087 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1737 event pairs, 6 based on Foata normal form. 46/423 useless extension candidates. Maximal degree in co-relation 2046. Up to 262 conditions per place. [2023-08-29 20:48:58,173 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 51 selfloop transitions, 13 changer transitions 17/84 dead transitions. [2023-08-29 20:48:58,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 809 flow [2023-08-29 20:48:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:48:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:48:58,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2023-08-29 20:48:58,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-08-29 20:48:58,176 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2023-08-29 20:48:58,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2023-08-29 20:48:58,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:58,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2023-08-29 20:48:58,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states 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 20:48:58,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 20:48:58,182 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 222.0) internal successors, (1776), 8 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 20:48:58,182 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 302 flow. Second operand 7 states and 756 transitions. [2023-08-29 20:48:58,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 809 flow [2023-08-29 20:48:58,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 747 flow, removed 26 selfloop flow, removed 4 redundant places. [2023-08-29 20:48:58,188 INFO L231 Difference]: Finished difference. Result has 69 places, 43 transitions, 352 flow [2023-08-29 20:48:58,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=69, PETRI_TRANSITIONS=43} [2023-08-29 20:48:58,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-08-29 20:48:58,190 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 43 transitions, 352 flow [2023-08-29 20:48:58,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:58,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:58,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 20:48:58,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:58,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 908508864, now seen corresponding path program 1 times [2023-08-29 20:48:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670414435] [2023-08-29 20:48:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:58,330 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 20:48:58,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:58,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670414435] [2023-08-29 20:48:58,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670414435] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:58,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:58,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:48:58,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033696783] [2023-08-29 20:48:58,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:58,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:48:58,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:48:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:48:58,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 222 [2023-08-29 20:48:58,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 43 transitions, 352 flow. Second operand has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 20:48:58,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:58,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 222 [2023-08-29 20:48:58,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:58,445 INFO L130 PetriNetUnfolder]: 145/282 cut-off events. [2023-08-29 20:48:58,446 INFO L131 PetriNetUnfolder]: For 1154/1270 co-relation queries the response was YES. [2023-08-29 20:48:58,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1438 conditions, 282 events. 145/282 cut-off events. For 1154/1270 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1113 event pairs, 2 based on Foata normal form. 38/306 useless extension candidates. Maximal degree in co-relation 1414. Up to 140 conditions per place. [2023-08-29 20:48:58,448 INFO L137 encePairwiseOnDemand]: 215/222 looper letters, 33 selfloop transitions, 17 changer transitions 22/74 dead transitions. [2023-08-29 20:48:58,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 726 flow [2023-08-29 20:48:58,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:48:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:48:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 847 transitions. [2023-08-29 20:48:58,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769144144144144 [2023-08-29 20:48:58,451 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 847 transitions. [2023-08-29 20:48:58,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 847 transitions. [2023-08-29 20:48:58,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:58,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 847 transitions. [2023-08-29 20:48:58,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.875) internal successors, (847), 8 states have internal predecessors, (847), 0 states have call successors, (0), 0 states 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 20:48:58,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 20:48:58,457 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 222.0) internal successors, (1998), 9 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states 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 20:48:58,457 INFO L175 Difference]: Start difference. First operand has 69 places, 43 transitions, 352 flow. Second operand 8 states and 847 transitions. [2023-08-29 20:48:58,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 726 flow [2023-08-29 20:48:58,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 648 flow, removed 24 selfloop flow, removed 7 redundant places. [2023-08-29 20:48:58,462 INFO L231 Difference]: Finished difference. Result has 70 places, 38 transitions, 297 flow [2023-08-29 20:48:58,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=297, PETRI_PLACES=70, PETRI_TRANSITIONS=38} [2023-08-29 20:48:58,463 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2023-08-29 20:48:58,463 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 38 transitions, 297 flow [2023-08-29 20:48:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.42857142857143) internal successors, (710), 7 states have internal predecessors, (710), 0 states have call successors, (0), 0 states 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 20:48:58,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:58,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:58,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 20:48:58,464 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-29 20:48:58,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1122720279, now seen corresponding path program 1 times [2023-08-29 20:48:58,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:58,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433480791] [2023-08-29 20:48:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:58,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:58,590 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 20:48:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433480791] [2023-08-29 20:48:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433480791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:58,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:58,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:48:58,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56465827] [2023-08-29 20:48:58,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:58,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:48:58,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:58,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:48:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:48:58,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 222 [2023-08-29 20:48:58,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 38 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 20:48:58,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:58,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 222 [2023-08-29 20:48:58,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:58,662 INFO L130 PetriNetUnfolder]: 87/172 cut-off events. [2023-08-29 20:48:58,663 INFO L131 PetriNetUnfolder]: For 531/531 co-relation queries the response was YES. [2023-08-29 20:48:58,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 172 events. 87/172 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 465 event pairs, 24 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 782. Up to 89 conditions per place. [2023-08-29 20:48:58,664 INFO L137 encePairwiseOnDemand]: 217/222 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-08-29 20:48:58,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 49 transitions, 458 flow [2023-08-29 20:48:58,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:48:58,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:48:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 504 transitions. [2023-08-29 20:48:58,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2023-08-29 20:48:58,668 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 504 transitions. [2023-08-29 20:48:58,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 504 transitions. [2023-08-29 20:48:58,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:58,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 504 transitions. [2023-08-29 20:48:58,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 20:48:58,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:58,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states 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 20:48:58,673 INFO L175 Difference]: Start difference. First operand has 70 places, 38 transitions, 297 flow. Second operand 5 states and 504 transitions. [2023-08-29 20:48:58,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 49 transitions, 458 flow [2023-08-29 20:48:58,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 366 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-08-29 20:48:58,676 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-08-29 20:48:58,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=222, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-08-29 20:48:58,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-29 20:48:58,677 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-08-29 20:48:58,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 20:48:58,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-08-29 20:48:58,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-08-29 20:48:58,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-08-29 20:48:58,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-08-29 20:48:58,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-08-29 20:48:58,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-08-29 20:48:58,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-08-29 20:48:58,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-08-29 20:48:58,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-08-29 20:48:58,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-08-29 20:48:58,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-08-29 20:48:58,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-08-29 20:48:58,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-08-29 20:48:58,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-08-29 20:48:58,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 20:48:58,682 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:58,685 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:48:58,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:48:58,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:48:58 BasicIcfg [2023-08-29 20:48:58,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:48:58,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:48:58,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:48:58,690 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:48:58,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:48:44" (3/4) ... [2023-08-29 20:48:58,693 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:48:58,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:48:58,698 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:48:58,699 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:48:58,699 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-29 20:48:58,703 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-29 20:48:58,703 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:48:58,703 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:48:58,704 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:48:58,735 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:48:58,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:48:58,736 INFO L158 Benchmark]: Toolchain (without parser) took 15513.09ms. Allocated memory was 69.2MB in the beginning and 234.9MB in the end (delta: 165.7MB). Free memory was 45.5MB in the beginning and 75.9MB in the end (delta: -30.4MB). Peak memory consumption was 136.5MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,737 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:48:58,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.25ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 45.3MB in the beginning and 64.7MB in the end (delta: -19.4MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.21ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,738 INFO L158 Benchmark]: Boogie Preprocessor took 42.83ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 60.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,738 INFO L158 Benchmark]: RCFGBuilder took 414.58ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 45.4MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,738 INFO L158 Benchmark]: TraceAbstraction took 14418.21ms. Allocated memory was 92.3MB in the beginning and 234.9MB in the end (delta: 142.6MB). Free memory was 44.6MB in the beginning and 79.0MB in the end (delta: -34.5MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,738 INFO L158 Benchmark]: Witness Printer took 46.08ms. Allocated memory is still 234.9MB. Free memory was 79.0MB in the beginning and 75.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:48:58,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.25ms. Allocated memory was 69.2MB in the beginning and 92.3MB in the end (delta: 23.1MB). Free memory was 45.3MB in the beginning and 64.7MB in the end (delta: -19.4MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.21ms. Allocated memory is still 92.3MB. Free memory was 64.7MB in the beginning and 62.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.83ms. Allocated memory is still 92.3MB. Free memory was 62.6MB in the beginning and 60.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.58ms. Allocated memory is still 92.3MB. Free memory was 60.9MB in the beginning and 45.4MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 14418.21ms. Allocated memory was 92.3MB in the beginning and 234.9MB in the end (delta: 142.6MB). Free memory was 44.6MB in the beginning and 79.0MB in the end (delta: -34.5MB). Peak memory consumption was 111.3MB. Max. memory is 16.1GB. * Witness Printer took 46.08ms. Allocated memory is still 234.9MB. Free memory was 79.0MB in the beginning and 75.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 115 PlacesBefore, 42 PlacesAfterwards, 104 TransitionsBefore, 30 TransitionsAfterwards, 2250 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 71 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 110 TotalNumberOfCompositions, 4371 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2311, independent: 2200, independent conditional: 0, independent unconditional: 2200, dependent: 111, dependent conditional: 0, dependent unconditional: 111, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1270, independent: 1244, independent conditional: 0, independent unconditional: 1244, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2311, independent: 956, independent conditional: 0, independent unconditional: 956, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 1270, unknown conditional: 0, unknown unconditional: 1270] , Statistics on independence cache: Total cache size (in pairs): 81, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 788]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 141 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.3s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1587 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1158 mSDsluCounter, 442 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 341 mSDsCounter, 124 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4680 IncrementalHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 124 mSolverCounterUnsat, 101 mSDtfsCounter, 4680 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=16, InterpolantAutomatonStates: 106, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 235 NumberOfCodeBlocks, 235 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 3818 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:48:58,772 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE