./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:36:29,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:36:29,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:36:30,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:36:30,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:36:30,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:36:30,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:36:30,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:36:30,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:36:30,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:36:30,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:36:30,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:36:30,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:36:30,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:36:30,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:36:30,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:36:30,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:36:30,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:36:30,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:36:30,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:36:30,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:36:30,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:36:30,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:36:30,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:36:30,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:36:30,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:36:30,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:36:30,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:36:30,089 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:36:30,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:36:30,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:36:30,091 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:36:30,091 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:36:30,092 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:36:30,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:36:30,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:36:30,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:36:30,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:36:30,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:36:30,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:36:30,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:36:30,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:36:30,132 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:36:30,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:36:30,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:36:30,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:36:30,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:36:30,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:36:30,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:36:30,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:36:30,136 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:36:30,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:36:30,137 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:36:30,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:36:30,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:36:30,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:36:30,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:36:30,138 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:36:30,138 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:36:30,138 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:36:30,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:36:30,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:36:30,139 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:36:30,139 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:36:30,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:36:30,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:36:30,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:36:30,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:36:30,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:36:30,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:36:30,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:36:30,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:36:30,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:36:30,141 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:36:30,141 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:36:30,141 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:36:30,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:36:30,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:36:30,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:36:30,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:36:30,445 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:36:30,445 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:36:30,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:36:31,597 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:36:31,846 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:36:31,846 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:36:31,863 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120d82a9c/fc6b3b24e6d64649a6ec902de802020e/FLAG51ec131b6 [2023-08-31 23:36:31,876 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/120d82a9c/fc6b3b24e6d64649a6ec902de802020e [2023-08-31 23:36:31,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:36:31,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:36:31,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:36:31,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:36:31,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:36:31,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:36:31" (1/1) ... [2023-08-31 23:36:31,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2117e6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:31, skipping insertion in model container [2023-08-31 23:36:31,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:36:31" (1/1) ... [2023-08-31 23:36:31,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:36:31,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:36:32,132 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:36:32,295 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:36:32,306 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:36:32,320 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/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-31 23:36:32,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:36:32,385 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:36:32,385 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:36:32,389 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:36:32,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32 WrapperNode [2023-08-31 23:36:32,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:36:32,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:36:32,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:36:32,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:36:32,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,407 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,425 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-08-31 23:36:32,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:36:32,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:36:32,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:36:32,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:36:32,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,446 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:36:32,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:36:32,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:36:32,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:36:32,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (1/1) ... [2023-08-31 23:36:32,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:36:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:36:32,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:36:32,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:36:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:36:32,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:36:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:36:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:36:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:36:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:36:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:36:32,531 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:36:32,531 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:36:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:36:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:36:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-31 23:36:32,532 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-31 23:36:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:36:32,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:36:32,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:36:32,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:36:32,534 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:36:32,711 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:36:32,713 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:36:32,953 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:36:32,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:36:32,961 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:36:32,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:36:32 BoogieIcfgContainer [2023-08-31 23:36:32,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:36:32,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:36:32,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:36:32,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:36:32,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:36:31" (1/3) ... [2023-08-31 23:36:32,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd4a47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:36:32, skipping insertion in model container [2023-08-31 23:36:32,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:32" (2/3) ... [2023-08-31 23:36:32,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd4a47c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:36:32, skipping insertion in model container [2023-08-31 23:36:32,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:36:32" (3/3) ... [2023-08-31 23:36:32,984 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-31 23:36:32,999 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:36:32,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-31 23:36:32,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:36:33,087 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:36:33,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 110 transitions, 240 flow [2023-08-31 23:36:33,186 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2023-08-31 23:36:33,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:36:33,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 2/106 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. 0/94 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-08-31 23:36:33,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 110 transitions, 240 flow [2023-08-31 23:36:33,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 102 transitions, 216 flow [2023-08-31 23:36:33,200 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:36:33,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 102 transitions, 216 flow [2023-08-31 23:36:33,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 102 transitions, 216 flow [2023-08-31 23:36:33,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 102 transitions, 216 flow [2023-08-31 23:36:33,244 INFO L130 PetriNetUnfolder]: 2/102 cut-off events. [2023-08-31 23:36:33,245 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:36:33,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 2/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-08-31 23:36:33,249 INFO L119 LiptonReduction]: Number of co-enabled transitions 2250 [2023-08-31 23:36:36,240 INFO L134 LiptonReduction]: Checked pairs total: 4292 [2023-08-31 23:36:36,240 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-31 23:36:36,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:36:36,258 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;@4485cbca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:36:36,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-31 23:36:36,260 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:36:36,260 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:36:36,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:36,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:36:36,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:36,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash 389, now seen corresponding path program 1 times [2023-08-31 23:36:36,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022588604] [2023-08-31 23:36:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:36,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:36,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:36,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022588604] [2023-08-31 23:36:36,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022588604] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:36,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:36,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:36:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683219417] [2023-08-31 23:36:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:36,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:36:36,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:36,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:36:36,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:36:36,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 218 [2023-08-31 23:36:36,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 72 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:36,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:36,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 218 [2023-08-31 23:36:36,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:36,641 INFO L130 PetriNetUnfolder]: 920/1333 cut-off events. [2023-08-31 23:36:36,641 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 23:36:36,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2742 conditions, 1333 events. 920/1333 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5668 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. [2023-08-31 23:36:36,654 INFO L137 encePairwiseOnDemand]: 209/218 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-31 23:36:36,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 21 transitions, 92 flow [2023-08-31 23:36:36,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:36:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:36:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 234 transitions. [2023-08-31 23:36:36,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536697247706422 [2023-08-31 23:36:36,666 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 234 transitions. [2023-08-31 23:36:36,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 234 transitions. [2023-08-31 23:36:36,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:36,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 234 transitions. [2023-08-31 23:36:36,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 117.0) internal successors, (234), 2 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:36,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:36,679 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 218.0) internal successors, (654), 3 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:36,681 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 72 flow. Second operand 2 states and 234 transitions. [2023-08-31 23:36:36,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 21 transitions, 92 flow [2023-08-31 23:36:36,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:36:36,686 INFO L231 Difference]: Finished difference. Result has 31 places, 21 transitions, 50 flow [2023-08-31 23:36:36,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, 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} [2023-08-31 23:36:36,692 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-31 23:36:36,692 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 21 transitions, 50 flow [2023-08-31 23:36:36,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:36,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:36,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:36,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:36:36,693 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)] === [2023-08-31 23:36:36,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash 779386397, now seen corresponding path program 1 times [2023-08-31 23:36:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:36,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241558594] [2023-08-31 23:36:36,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241558594] [2023-08-31 23:36:37,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241558594] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:37,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:37,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:36:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677865292] [2023-08-31 23:36:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:37,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:36:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:36:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:36:37,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 218 [2023-08-31 23:36:37,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:37,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:37,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 218 [2023-08-31 23:36:37,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:37,333 INFO L130 PetriNetUnfolder]: 839/1325 cut-off events. [2023-08-31 23:36:37,333 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:36:37,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1325 events. 839/1325 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 6649 event pairs, 191 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 2620. Up to 944 conditions per place. [2023-08-31 23:36:37,343 INFO L137 encePairwiseOnDemand]: 215/218 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-31 23:36:37,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 150 flow [2023-08-31 23:36:37,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:36:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:36:37,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 337 transitions. [2023-08-31 23:36:37,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152905198776758 [2023-08-31 23:36:37,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 337 transitions. [2023-08-31 23:36:37,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 337 transitions. [2023-08-31 23:36:37,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:37,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 337 transitions. [2023-08-31 23:36:37,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:37,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:37,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:37,355 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 50 flow. Second operand 3 states and 337 transitions. [2023-08-31 23:36:37,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 150 flow [2023-08-31 23:36:37,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 150 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:36:37,357 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 58 flow [2023-08-31 23:36:37,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-31 23:36:37,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-31 23:36:37,358 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 58 flow [2023-08-31 23:36:37,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:37,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:37,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:37,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:36:37,359 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)] === [2023-08-31 23:36:37,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:37,362 INFO L85 PathProgramCache]: Analyzing trace with hash 779386403, now seen corresponding path program 1 times [2023-08-31 23:36:37,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:37,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965627012] [2023-08-31 23:36:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:37,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:37,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:37,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965627012] [2023-08-31 23:36:37,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965627012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:37,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:37,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:36:37,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566362901] [2023-08-31 23:36:37,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:37,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:36:37,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:36:37,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:36:38,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 218 [2023-08-31 23:36:38,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 58 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:38,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 218 [2023-08-31 23:36:38,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:38,280 INFO L130 PetriNetUnfolder]: 623/928 cut-off events. [2023-08-31 23:36:38,280 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-08-31 23:36:38,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 928 events. 623/928 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3828 event pairs, 93 based on Foata normal form. 81/1009 useless extension candidates. Maximal degree in co-relation 2141. Up to 810 conditions per place. [2023-08-31 23:36:38,286 INFO L137 encePairwiseOnDemand]: 213/218 looper letters, 26 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2023-08-31 23:36:38,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 149 flow [2023-08-31 23:36:38,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:36:38,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:36:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2023-08-31 23:36:38,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090214067278288 [2023-08-31 23:36:38,289 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 535 transitions. [2023-08-31 23:36:38,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 535 transitions. [2023-08-31 23:36:38,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:38,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 535 transitions. [2023-08-31 23:36:38,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,295 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,295 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 58 flow. Second operand 6 states and 535 transitions. [2023-08-31 23:36:38,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 149 flow [2023-08-31 23:36:38,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 139 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:36:38,297 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 60 flow [2023-08-31 23:36:38,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=60, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-08-31 23:36:38,298 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places. [2023-08-31 23:36:38,301 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 60 flow [2023-08-31 23:36:38,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:38,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:38,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:36:38,302 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:38,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash 109383093, now seen corresponding path program 1 times [2023-08-31 23:36:38,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:38,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692341887] [2023-08-31 23:36:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:38,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:38,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692341887] [2023-08-31 23:36:38,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692341887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:38,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:36:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531090690] [2023-08-31 23:36:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:38,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:36:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:36:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:36:38,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 218 [2023-08-31 23:36:38,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:38,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 218 [2023-08-31 23:36:38,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:38,657 INFO L130 PetriNetUnfolder]: 1683/2465 cut-off events. [2023-08-31 23:36:38,657 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-08-31 23:36:38,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5423 conditions, 2465 events. 1683/2465 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11090 event pairs, 237 based on Foata normal form. 99/2564 useless extension candidates. Maximal degree in co-relation 5418. Up to 1234 conditions per place. [2023-08-31 23:36:38,669 INFO L137 encePairwiseOnDemand]: 210/218 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-08-31 23:36:38,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 198 flow [2023-08-31 23:36:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:36:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:36:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2023-08-31 23:36:38,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47706422018348627 [2023-08-31 23:36:38,671 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2023-08-31 23:36:38,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2023-08-31 23:36:38,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:38,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2023-08-31 23:36:38,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,675 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 60 flow. Second operand 4 states and 416 transitions. [2023-08-31 23:36:38,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 198 flow [2023-08-31 23:36:38,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 189 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:36:38,677 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 106 flow [2023-08-31 23:36:38,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2023-08-31 23:36:38,678 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -4 predicate places. [2023-08-31 23:36:38,678 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 106 flow [2023-08-31 23:36:38,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:38,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:38,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:36:38,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:38,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash -904093016, now seen corresponding path program 1 times [2023-08-31 23:36:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:38,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662475728] [2023-08-31 23:36:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:38,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:38,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662475728] [2023-08-31 23:36:38,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662475728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:38,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:38,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:36:38,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175087124] [2023-08-31 23:36:38,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:38,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:36:38,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:38,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:36:38,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:36:38,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 218 [2023-08-31 23:36:38,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:38,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:38,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 218 [2023-08-31 23:36:38,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:39,052 INFO L130 PetriNetUnfolder]: 1723/2532 cut-off events. [2023-08-31 23:36:39,054 INFO L131 PetriNetUnfolder]: For 1625/1625 co-relation queries the response was YES. [2023-08-31 23:36:39,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7317 conditions, 2532 events. 1723/2532 cut-off events. For 1625/1625 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11757 event pairs, 238 based on Foata normal form. 9/2541 useless extension candidates. Maximal degree in co-relation 7310. Up to 1359 conditions per place. [2023-08-31 23:36:39,070 INFO L137 encePairwiseOnDemand]: 210/218 looper letters, 43 selfloop transitions, 14 changer transitions 0/57 dead transitions. [2023-08-31 23:36:39,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 340 flow [2023-08-31 23:36:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:36:39,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:36:39,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 423 transitions. [2023-08-31 23:36:39,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48509174311926606 [2023-08-31 23:36:39,072 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 423 transitions. [2023-08-31 23:36:39,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 423 transitions. [2023-08-31 23:36:39,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:39,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 423 transitions. [2023-08-31 23:36:39,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,076 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,076 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 106 flow. Second operand 4 states and 423 transitions. [2023-08-31 23:36:39,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 340 flow [2023-08-31 23:36:39,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:36:39,081 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 232 flow [2023-08-31 23:36:39,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-31 23:36:39,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-31 23:36:39,083 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 232 flow [2023-08-31 23:36:39,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:39,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:39,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:36:39,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:39,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:39,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2037827352, now seen corresponding path program 1 times [2023-08-31 23:36:39,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:39,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378182919] [2023-08-31 23:36:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:39,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:39,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378182919] [2023-08-31 23:36:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378182919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:39,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:39,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:36:39,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470345418] [2023-08-31 23:36:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:39,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:36:39,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:36:39,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:36:39,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 218 [2023-08-31 23:36:39,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 232 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:39,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 218 [2023-08-31 23:36:39,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:39,504 INFO L130 PetriNetUnfolder]: 1739/2664 cut-off events. [2023-08-31 23:36:39,504 INFO L131 PetriNetUnfolder]: For 4563/4621 co-relation queries the response was YES. [2023-08-31 23:36:39,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8907 conditions, 2664 events. 1739/2664 cut-off events. For 4563/4621 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13493 event pairs, 825 based on Foata normal form. 74/2720 useless extension candidates. Maximal degree in co-relation 8897. Up to 1523 conditions per place. [2023-08-31 23:36:39,522 INFO L137 encePairwiseOnDemand]: 215/218 looper letters, 39 selfloop transitions, 7 changer transitions 1/50 dead transitions. [2023-08-31 23:36:39,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 378 flow [2023-08-31 23:36:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:36:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:36:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-08-31 23:36:39,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5107033639143731 [2023-08-31 23:36:39,523 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-08-31 23:36:39,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-08-31 23:36:39,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:39,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-08-31 23:36:39,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,526 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 232 flow. Second operand 3 states and 334 transitions. [2023-08-31 23:36:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 378 flow [2023-08-31 23:36:39,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 50 transitions, 378 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:36:39,532 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 247 flow [2023-08-31 23:36:39,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-31 23:36:39,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-31 23:36:39,533 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 247 flow [2023-08-31 23:36:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:39,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:36:39,533 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:39,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 545713272, now seen corresponding path program 1 times [2023-08-31 23:36:39,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:39,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733542249] [2023-08-31 23:36:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:39,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:39,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733542249] [2023-08-31 23:36:39,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733542249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:39,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:36:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113189637] [2023-08-31 23:36:39,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:39,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:36:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:36:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:36:39,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 218 [2023-08-31 23:36:39,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 247 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:39,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 218 [2023-08-31 23:36:39,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:39,908 INFO L130 PetriNetUnfolder]: 1749/2622 cut-off events. [2023-08-31 23:36:39,909 INFO L131 PetriNetUnfolder]: For 5380/5380 co-relation queries the response was YES. [2023-08-31 23:36:39,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9105 conditions, 2622 events. 1749/2622 cut-off events. For 5380/5380 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11979 event pairs, 249 based on Foata normal form. 6/2628 useless extension candidates. Maximal degree in co-relation 9093. Up to 1259 conditions per place. [2023-08-31 23:36:39,925 INFO L137 encePairwiseOnDemand]: 210/218 looper letters, 42 selfloop transitions, 20 changer transitions 1/63 dead transitions. [2023-08-31 23:36:39,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 551 flow [2023-08-31 23:36:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:36:39,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:36:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2023-08-31 23:36:39,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782110091743119 [2023-08-31 23:36:39,927 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2023-08-31 23:36:39,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2023-08-31 23:36:39,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:39,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2023-08-31 23:36:39,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,930 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,930 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 247 flow. Second operand 4 states and 417 transitions. [2023-08-31 23:36:39,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 551 flow [2023-08-31 23:36:39,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 537 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:36:39,937 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 427 flow [2023-08-31 23:36:39,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=427, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-31 23:36:39,938 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-31 23:36:39,938 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 427 flow [2023-08-31 23:36:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:39,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:39,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:39,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:36:39,939 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)] === [2023-08-31 23:36:39,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -262760192, now seen corresponding path program 1 times [2023-08-31 23:36:39,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:39,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938893930] [2023-08-31 23:36:39,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:39,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:40,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:40,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938893930] [2023-08-31 23:36:40,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938893930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:40,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:40,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:36:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868283980] [2023-08-31 23:36:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:36:40,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:40,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:36:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:36:40,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 218 [2023-08-31 23:36:40,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 427 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:40,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 218 [2023-08-31 23:36:40,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:40,471 INFO L130 PetriNetUnfolder]: 2429/3670 cut-off events. [2023-08-31 23:36:40,472 INFO L131 PetriNetUnfolder]: For 11364/11364 co-relation queries the response was YES. [2023-08-31 23:36:40,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13681 conditions, 3670 events. 2429/3670 cut-off events. For 11364/11364 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 18481 event pairs, 495 based on Foata normal form. 48/3718 useless extension candidates. Maximal degree in co-relation 13667. Up to 1724 conditions per place. [2023-08-31 23:36:40,496 INFO L137 encePairwiseOnDemand]: 210/218 looper letters, 47 selfloop transitions, 17 changer transitions 22/86 dead transitions. [2023-08-31 23:36:40,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 86 transitions, 886 flow [2023-08-31 23:36:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:36:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:36:40,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 521 transitions. [2023-08-31 23:36:40,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779816513761468 [2023-08-31 23:36:40,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 521 transitions. [2023-08-31 23:36:40,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 521 transitions. [2023-08-31 23:36:40,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:40,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 521 transitions. [2023-08-31 23:36:40,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 218.0) internal successors, (1308), 6 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,502 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 218.0) internal successors, (1308), 6 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,502 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 427 flow. Second operand 5 states and 521 transitions. [2023-08-31 23:36:40,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 86 transitions, 886 flow [2023-08-31 23:36:40,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 886 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:36:40,521 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 470 flow [2023-08-31 23:36:40,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-31 23:36:40,522 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-08-31 23:36:40,522 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 470 flow [2023-08-31 23:36:40,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:40,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:40,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:36:40,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:40,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:40,523 INFO L85 PathProgramCache]: Analyzing trace with hash -487774297, now seen corresponding path program 1 times [2023-08-31 23:36:40,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:40,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096764397] [2023-08-31 23:36:40,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:40,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:40,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:40,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096764397] [2023-08-31 23:36:40,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096764397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:40,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:40,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:36:40,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809313928] [2023-08-31 23:36:40,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:40,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:36:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:36:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:36:40,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 218 [2023-08-31 23:36:40,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 470 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:40,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 218 [2023-08-31 23:36:40,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:40,939 INFO L130 PetriNetUnfolder]: 1459/2232 cut-off events. [2023-08-31 23:36:40,939 INFO L131 PetriNetUnfolder]: For 9717/9717 co-relation queries the response was YES. [2023-08-31 23:36:40,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 2232 events. 1459/2232 cut-off events. For 9717/9717 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10729 event pairs, 352 based on Foata normal form. 36/2268 useless extension candidates. Maximal degree in co-relation 8853. Up to 1124 conditions per place. [2023-08-31 23:36:40,963 INFO L137 encePairwiseOnDemand]: 211/218 looper letters, 42 selfloop transitions, 18 changer transitions 6/66 dead transitions. [2023-08-31 23:36:40,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 747 flow [2023-08-31 23:36:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:36:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:36:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 417 transitions. [2023-08-31 23:36:40,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782110091743119 [2023-08-31 23:36:40,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 417 transitions. [2023-08-31 23:36:40,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 417 transitions. [2023-08-31 23:36:40,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:40,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 417 transitions. [2023-08-31 23:36:40,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,968 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 470 flow. Second operand 4 states and 417 transitions. [2023-08-31 23:36:40,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 747 flow [2023-08-31 23:36:40,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 683 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-31 23:36:40,985 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 494 flow [2023-08-31 23:36:40,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=494, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-08-31 23:36:40,986 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2023-08-31 23:36:40,986 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 494 flow [2023-08-31 23:36:40,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:40,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:40,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:40,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:36:40,987 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:40,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1055645506, now seen corresponding path program 2 times [2023-08-31 23:36:40,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345627445] [2023-08-31 23:36:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345627445] [2023-08-31 23:36:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345627445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:41,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:36:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513546582] [2023-08-31 23:36:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:41,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:36:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:36:41,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:36:41,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 218 [2023-08-31 23:36:41,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 494 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:41,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 218 [2023-08-31 23:36:41,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:41,355 INFO L130 PetriNetUnfolder]: 1072/1752 cut-off events. [2023-08-31 23:36:41,355 INFO L131 PetriNetUnfolder]: For 10699/10810 co-relation queries the response was YES. [2023-08-31 23:36:41,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6746 conditions, 1752 events. 1072/1752 cut-off events. For 10699/10810 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 9636 event pairs, 268 based on Foata normal form. 116/1838 useless extension candidates. Maximal degree in co-relation 6728. Up to 1152 conditions per place. [2023-08-31 23:36:41,367 INFO L137 encePairwiseOnDemand]: 211/218 looper letters, 68 selfloop transitions, 9 changer transitions 24/110 dead transitions. [2023-08-31 23:36:41,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 110 transitions, 1475 flow [2023-08-31 23:36:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:36:41,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:36:41,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 534 transitions. [2023-08-31 23:36:41,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48990825688073397 [2023-08-31 23:36:41,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 534 transitions. [2023-08-31 23:36:41,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 534 transitions. [2023-08-31 23:36:41,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:41,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 534 transitions. [2023-08-31 23:36:41,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 218.0) internal successors, (1308), 6 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,373 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 218.0) internal successors, (1308), 6 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,373 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 494 flow. Second operand 5 states and 534 transitions. [2023-08-31 23:36:41,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 110 transitions, 1475 flow [2023-08-31 23:36:41,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 110 transitions, 1315 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-31 23:36:41,383 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 507 flow [2023-08-31 23:36:41,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2023-08-31 23:36:41,384 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-31 23:36:41,384 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 507 flow [2023-08-31 23:36:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:41,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:36:41,385 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)] === [2023-08-31 23:36:41,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1995012093, now seen corresponding path program 1 times [2023-08-31 23:36:41,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:41,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260120183] [2023-08-31 23:36:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:41,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:41,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:41,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260120183] [2023-08-31 23:36:41,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260120183] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:41,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:41,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:36:41,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303312389] [2023-08-31 23:36:41,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:41,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:36:41,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:36:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:36:41,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 218 [2023-08-31 23:36:41,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:41,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 218 [2023-08-31 23:36:41,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:41,766 INFO L130 PetriNetUnfolder]: 1035/1758 cut-off events. [2023-08-31 23:36:41,766 INFO L131 PetriNetUnfolder]: For 9035/9382 co-relation queries the response was YES. [2023-08-31 23:36:41,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8663 conditions, 1758 events. 1035/1758 cut-off events. For 9035/9382 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10080 event pairs, 81 based on Foata normal form. 163/1897 useless extension candidates. Maximal degree in co-relation 8642. Up to 1087 conditions per place. [2023-08-31 23:36:41,779 INFO L137 encePairwiseOnDemand]: 211/218 looper letters, 85 selfloop transitions, 18 changer transitions 32/144 dead transitions. [2023-08-31 23:36:41,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 144 transitions, 1823 flow [2023-08-31 23:36:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:36:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:36:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 746 transitions. [2023-08-31 23:36:41,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888597640891219 [2023-08-31 23:36:41,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 746 transitions. [2023-08-31 23:36:41,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 746 transitions. [2023-08-31 23:36:41,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:41,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 746 transitions. [2023-08-31 23:36:41,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 218.0) internal successors, (1744), 8 states have internal predecessors, (1744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,787 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 507 flow. Second operand 7 states and 746 transitions. [2023-08-31 23:36:41,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 144 transitions, 1823 flow [2023-08-31 23:36:41,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 144 transitions, 1816 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 23:36:41,798 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 629 flow [2023-08-31 23:36:41,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2023-08-31 23:36:41,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-31 23:36:41,799 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 629 flow [2023-08-31 23:36:41,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:41,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:41,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:36:41,800 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2023-08-31 23:36:41,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:41,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1715823851, now seen corresponding path program 1 times [2023-08-31 23:36:41,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:41,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905147834] [2023-08-31 23:36:41,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:41,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:41,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:41,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:41,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905147834] [2023-08-31 23:36:41,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905147834] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:41,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:41,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:36:41,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601024118] [2023-08-31 23:36:41,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:41,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:36:41,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:41,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:36:41,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:36:41,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 218 [2023-08-31 23:36:41,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 629 flow. Second operand has 6 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:41,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:41,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 218 [2023-08-31 23:36:41,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:42,229 INFO L130 PetriNetUnfolder]: 960/1685 cut-off events. [2023-08-31 23:36:42,229 INFO L131 PetriNetUnfolder]: For 10694/11417 co-relation queries the response was YES. [2023-08-31 23:36:42,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10047 conditions, 1685 events. 960/1685 cut-off events. For 10694/11417 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10011 event pairs, 24 based on Foata normal form. 210/1867 useless extension candidates. Maximal degree in co-relation 10023. Up to 1025 conditions per place. [2023-08-31 23:36:42,242 INFO L137 encePairwiseOnDemand]: 211/218 looper letters, 72 selfloop transitions, 14 changer transitions 73/167 dead transitions. [2023-08-31 23:36:42,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 167 transitions, 2180 flow [2023-08-31 23:36:42,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 23:36:42,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 23:36:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 959 transitions. [2023-08-31 23:36:42,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4887869520897044 [2023-08-31 23:36:42,246 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 959 transitions. [2023-08-31 23:36:42,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 959 transitions. [2023-08-31 23:36:42,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:42,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 959 transitions. [2023-08-31 23:36:42,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 106.55555555555556) internal successors, (959), 9 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 218.0) internal successors, (2180), 10 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,252 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 218.0) internal successors, (2180), 10 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,252 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 629 flow. Second operand 9 states and 959 transitions. [2023-08-31 23:36:42,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 167 transitions, 2180 flow [2023-08-31 23:36:42,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 167 transitions, 2136 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-31 23:36:42,288 INFO L231 Difference]: Finished difference. Result has 80 places, 54 transitions, 621 flow [2023-08-31 23:36:42,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=621, PETRI_PLACES=80, PETRI_TRANSITIONS=54} [2023-08-31 23:36:42,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2023-08-31 23:36:42,289 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 54 transitions, 621 flow [2023-08-31 23:36:42,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.66666666666667) internal successors, (598), 6 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:42,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:42,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:36:42,290 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)] === [2023-08-31 23:36:42,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:42,290 INFO L85 PathProgramCache]: Analyzing trace with hash -250620138, now seen corresponding path program 1 times [2023-08-31 23:36:42,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:42,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084767461] [2023-08-31 23:36:42,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:42,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:42,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:42,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:42,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084767461] [2023-08-31 23:36:42,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084767461] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:42,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:42,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:36:42,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653293972] [2023-08-31 23:36:42,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:42,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:36:42,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:36:42,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:36:42,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 218 [2023-08-31 23:36:42,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 54 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:42,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 218 [2023-08-31 23:36:42,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:42,632 INFO L130 PetriNetUnfolder]: 614/1074 cut-off events. [2023-08-31 23:36:42,632 INFO L131 PetriNetUnfolder]: For 7883/7883 co-relation queries the response was YES. [2023-08-31 23:36:42,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6802 conditions, 1074 events. 614/1074 cut-off events. For 7883/7883 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5148 event pairs, 70 based on Foata normal form. 6/1080 useless extension candidates. Maximal degree in co-relation 6774. Up to 411 conditions per place. [2023-08-31 23:36:42,641 INFO L137 encePairwiseOnDemand]: 210/218 looper letters, 53 selfloop transitions, 16 changer transitions 67/136 dead transitions. [2023-08-31 23:36:42,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 136 transitions, 1691 flow [2023-08-31 23:36:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:36:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:36:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 618 transitions. [2023-08-31 23:36:42,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724770642201835 [2023-08-31 23:36:42,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 618 transitions. [2023-08-31 23:36:42,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 618 transitions. [2023-08-31 23:36:42,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:42,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 618 transitions. [2023-08-31 23:36:42,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,648 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 218.0) internal successors, (1526), 7 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,648 INFO L175 Difference]: Start difference. First operand has 80 places, 54 transitions, 621 flow. Second operand 6 states and 618 transitions. [2023-08-31 23:36:42,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 136 transitions, 1691 flow [2023-08-31 23:36:42,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1400 flow, removed 104 selfloop flow, removed 8 redundant places. [2023-08-31 23:36:42,674 INFO L231 Difference]: Finished difference. Result has 73 places, 47 transitions, 502 flow [2023-08-31 23:36:42,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=502, PETRI_PLACES=73, PETRI_TRANSITIONS=47} [2023-08-31 23:36:42,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-31 23:36:42,675 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 47 transitions, 502 flow [2023-08-31 23:36:42,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:42,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:36:42,676 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)] === [2023-08-31 23:36:42,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:42,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1933837992, now seen corresponding path program 2 times [2023-08-31 23:36:42,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:42,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848882351] [2023-08-31 23:36:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:42,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:42,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:42,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848882351] [2023-08-31 23:36:42,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848882351] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:42,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:36:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311330016] [2023-08-31 23:36:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 23:36:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 23:36:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 23:36:42,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 218 [2023-08-31 23:36:42,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 47 transitions, 502 flow. Second operand has 7 states, 7 states have (on average 99.42857142857143) internal successors, (696), 7 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:42,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 218 [2023-08-31 23:36:42,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:42,976 INFO L130 PetriNetUnfolder]: 225/434 cut-off events. [2023-08-31 23:36:42,976 INFO L131 PetriNetUnfolder]: For 2390/2461 co-relation queries the response was YES. [2023-08-31 23:36:42,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 434 events. 225/434 cut-off events. For 2390/2461 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1865 event pairs, 12 based on Foata normal form. 48/473 useless extension candidates. Maximal degree in co-relation 2346. Up to 134 conditions per place. [2023-08-31 23:36:42,979 INFO L137 encePairwiseOnDemand]: 211/218 looper letters, 21 selfloop transitions, 17 changer transitions 45/85 dead transitions. [2023-08-31 23:36:42,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 1090 flow [2023-08-31 23:36:42,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:36:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:36:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 833 transitions. [2023-08-31 23:36:42,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776376146788991 [2023-08-31 23:36:42,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 833 transitions. [2023-08-31 23:36:42,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 833 transitions. [2023-08-31 23:36:42,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:42,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 833 transitions. [2023-08-31 23:36:42,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.125) internal successors, (833), 8 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 218.0) internal successors, (1962), 9 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,987 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 218.0) internal successors, (1962), 9 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,987 INFO L175 Difference]: Start difference. First operand has 73 places, 47 transitions, 502 flow. Second operand 8 states and 833 transitions. [2023-08-31 23:36:42,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 1090 flow [2023-08-31 23:36:42,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 85 transitions, 945 flow, removed 14 selfloop flow, removed 8 redundant places. [2023-08-31 23:36:42,995 INFO L231 Difference]: Finished difference. Result has 71 places, 32 transitions, 286 flow [2023-08-31 23:36:42,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=286, PETRI_PLACES=71, PETRI_TRANSITIONS=32} [2023-08-31 23:36:42,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2023-08-31 23:36:42,997 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 32 transitions, 286 flow [2023-08-31 23:36:42,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.42857142857143) internal successors, (696), 7 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:42,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:36:42,997 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] [2023-08-31 23:36:42,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 23:36:42,998 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)] === [2023-08-31 23:36:42,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:36:42,998 INFO L85 PathProgramCache]: Analyzing trace with hash 323634554, now seen corresponding path program 1 times [2023-08-31 23:36:42,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:36:42,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036187820] [2023-08-31 23:36:42,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:36:42,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:36:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:36:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:36:43,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:36:43,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036187820] [2023-08-31 23:36:43,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036187820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:36:43,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:36:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:36:43,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982422932] [2023-08-31 23:36:43,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:36:43,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:36:43,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:36:43,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:36:43,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:36:43,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 218 [2023-08-31 23:36:43,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 32 transitions, 286 flow. Second operand has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:43,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:36:43,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 218 [2023-08-31 23:36:43,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:36:43,190 INFO L130 PetriNetUnfolder]: 42/91 cut-off events. [2023-08-31 23:36:43,191 INFO L131 PetriNetUnfolder]: For 487/488 co-relation queries the response was YES. [2023-08-31 23:36:43,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 91 events. 42/91 cut-off events. For 487/488 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 181 event pairs, 12 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 526. Up to 57 conditions per place. [2023-08-31 23:36:43,192 INFO L137 encePairwiseOnDemand]: 215/218 looper letters, 0 selfloop transitions, 0 changer transitions 35/35 dead transitions. [2023-08-31 23:36:43,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 35 transitions, 370 flow [2023-08-31 23:36:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:36:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:36:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2023-08-31 23:36:43,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736238532110092 [2023-08-31 23:36:43,194 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 413 transitions. [2023-08-31 23:36:43,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 413 transitions. [2023-08-31 23:36:43,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:36:43,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 413 transitions. [2023-08-31 23:36:43,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.25) internal successors, (413), 4 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:43,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:43,197 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 218.0) internal successors, (1090), 5 states have internal predecessors, (1090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:43,197 INFO L175 Difference]: Start difference. First operand has 71 places, 32 transitions, 286 flow. Second operand 4 states and 413 transitions. [2023-08-31 23:36:43,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 35 transitions, 370 flow [2023-08-31 23:36:43,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 35 transitions, 237 flow, removed 16 selfloop flow, removed 25 redundant places. [2023-08-31 23:36:43,199 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-31 23:36:43,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-31 23:36:43,200 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-31 23:36:43,200 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-31 23:36:43,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.75) internal successors, (411), 4 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:36:43,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2023-08-31 23:36:43,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2023-08-31 23:36:43,206 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2023-08-31 23:36:43,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2023-08-31 23:36:43,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2023-08-31 23:36:43,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2023-08-31 23:36:43,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2023-08-31 23:36:43,207 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2023-08-31 23:36:43,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (5 of 14 remaining) [2023-08-31 23:36:43,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (4 of 14 remaining) [2023-08-31 23:36:43,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 14 remaining) [2023-08-31 23:36:43,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 14 remaining) [2023-08-31 23:36:43,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 14 remaining) [2023-08-31 23:36:43,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 14 remaining) [2023-08-31 23:36:43,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 23:36:43,209 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:36:43,213 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:36:43,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:36:43,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:36:43 BasicIcfg [2023-08-31 23:36:43,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:36:43,217 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:36:43,217 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:36:43,217 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:36:43,217 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:36:32" (3/4) ... [2023-08-31 23:36:43,220 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:36:43,225 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:36:43,225 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:36:43,225 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:36:43,225 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-08-31 23:36:43,231 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-31 23:36:43,231 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:36:43,231 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:36:43,231 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:36:43,263 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:36:43,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:36:43,264 INFO L158 Benchmark]: Toolchain (without parser) took 11379.65ms. Allocated memory was 67.1MB in the beginning and 488.6MB in the end (delta: 421.5MB). Free memory was 34.9MB in the beginning and 362.7MB in the end (delta: -327.8MB). Peak memory consumption was 92.8MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,264 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 49.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:36:43,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.19ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 34.8MB in the beginning and 63.1MB in the end (delta: -28.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.83ms. Allocated memory is still 96.5MB. Free memory was 63.1MB in the beginning and 61.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,266 INFO L158 Benchmark]: Boogie Preprocessor took 23.59ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,266 INFO L158 Benchmark]: RCFGBuilder took 527.07ms. Allocated memory is still 96.5MB. Free memory was 59.4MB in the beginning and 74.6MB in the end (delta: -15.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,266 INFO L158 Benchmark]: TraceAbstraction took 10237.10ms. Allocated memory was 96.5MB in the beginning and 488.6MB in the end (delta: 392.2MB). Free memory was 74.0MB in the beginning and 365.9MB in the end (delta: -291.8MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,266 INFO L158 Benchmark]: Witness Printer took 47.20ms. Allocated memory is still 488.6MB. Free memory was 365.9MB in the beginning and 362.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:36:43,268 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 67.1MB. Free memory was 45.1MB in the beginning and 45.0MB in the end (delta: 49.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.19ms. Allocated memory was 67.1MB in the beginning and 96.5MB in the end (delta: 29.4MB). Free memory was 34.8MB in the beginning and 63.1MB in the end (delta: -28.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.83ms. Allocated memory is still 96.5MB. Free memory was 63.1MB in the beginning and 61.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.59ms. Allocated memory is still 96.5MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.07ms. Allocated memory is still 96.5MB. Free memory was 59.4MB in the beginning and 74.6MB in the end (delta: -15.2MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10237.10ms. Allocated memory was 96.5MB in the beginning and 488.6MB in the end (delta: 392.2MB). Free memory was 74.0MB in the beginning and 365.9MB in the end (delta: -291.8MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. * Witness Printer took 47.20ms. Allocated memory is still 488.6MB. Free memory was 365.9MB in the beginning and 362.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 113 PlacesBefore, 42 PlacesAfterwards, 102 TransitionsBefore, 30 TransitionsAfterwards, 2250 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 108 TotalNumberOfCompositions, 4292 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2068, independent: 1955, independent conditional: 0, independent unconditional: 1955, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1195, independent: 1168, independent conditional: 0, independent unconditional: 1168, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2068, independent: 787, independent conditional: 0, independent unconditional: 787, dependent: 86, dependent conditional: 0, dependent unconditional: 86, unknown: 1195, unknown conditional: 0, unknown unconditional: 1195] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 53, Positive conditional cache size: 0, Positive unconditional cache size: 53, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -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: 784]: 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, 139 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: 10.1s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 621 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 470 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1321 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 65 mSDtfsCounter, 1321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=629occurred in iteration=11, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 199 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 184 ConstructedInterpolants, 0 QuantifiedInterpolants, 989 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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! [2023-08-31 23:36:43,297 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