./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_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 58dc011fd2a961d9f4b52b23fa43b2842c59061a7eec6829cf4a27698c4c4b05 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:37:47,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:37:47,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:37:47,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:37:47,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:37:47,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:37:47,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:37:47,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:37:47,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:37:47,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:37:47,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:37:47,974 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:37:47,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:37:47,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:37:47,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:37:47,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:37:47,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:37:47,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:37:47,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:37:47,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:37:47,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:37:47,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:37:48,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:37:48,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:37:48,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:37:48,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:37:48,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:37:48,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:37:48,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:37:48,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:37:48,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:37:48,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:37:48,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:37:48,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:37:48,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:37:48,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:37:48,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:37:48,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:37:48,014 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:37:48,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:37:48,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:37:48,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:37:48,049 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:37:48,050 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:37:48,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:37:48,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:37:48,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:37:48,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:37:48,052 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:37:48,052 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:37:48,053 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:37:48,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:37:48,054 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:37:48,054 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:37:48,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:37:48,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:37:48,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:37:48,055 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:37:48,055 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:37:48,055 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:37:48,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:37:48,055 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:37:48,056 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:37:48,056 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:37:48,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:37:48,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:37:48,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:37:48,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:37:48,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:37:48,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:37:48,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:37:48,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:37:48,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:37:48,058 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:37:48,058 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:37:48,058 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:37:48,059 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58dc011fd2a961d9f4b52b23fa43b2842c59061a7eec6829cf4a27698c4c4b05 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:37:48,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:37:48,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:37:48,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:37:48,381 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:37:48,381 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:37:48,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:37:49,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:37:49,775 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:37:49,776 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:37:49,790 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f1488ea/d6f0a544ec48490ea595c39e2fdd175e/FLAGb90e03fc4 [2023-08-29 20:37:49,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f1488ea/d6f0a544ec48490ea595c39e2fdd175e [2023-08-29 20:37:49,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:37:49,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:37:49,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:37:49,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:37:49,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:37:49,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:37:49" (1/1) ... [2023-08-29 20:37:49,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40998a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:49, skipping insertion in model container [2023-08-29 20:37:49,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:37:49" (1/1) ... [2023-08-29 20:37:49,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:37:49,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:37:49,981 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/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-08-29 20:37:50,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:37:50,139 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:37:50,158 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/safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2023-08-29 20:37:50,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:37:50,232 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:37:50,232 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:37:50,237 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:37:50,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50 WrapperNode [2023-08-29 20:37:50,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:37:50,239 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:37:50,239 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:37:50,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:37:50,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,297 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-29 20:37:50,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:37:50,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:37:50,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:37:50,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:37:50,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,324 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,340 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:37:50,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:37:50,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:37:50,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:37:50,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (1/1) ... [2023-08-29 20:37:50,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:37:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:37:50,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:37:50,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:37:50,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:37:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:37:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:37:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:37:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:37:50,411 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:37:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:37:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:37:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:37:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:37:50,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:37:50,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:37:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:37:50,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:37:50,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:37:50,414 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:37:50,543 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:37:50,554 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:37:50,747 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:37:50,753 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:37:50,753 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:37:50,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:37:50 BoogieIcfgContainer [2023-08-29 20:37:50,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:37:50,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:37:50,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:37:50,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:37:50,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:37:49" (1/3) ... [2023-08-29 20:37:50,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd6d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:37:50, skipping insertion in model container [2023-08-29 20:37:50,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:37:50" (2/3) ... [2023-08-29 20:37:50,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cd6d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:37:50, skipping insertion in model container [2023-08-29 20:37:50,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:37:50" (3/3) ... [2023-08-29 20:37:50,766 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_pso.oepc_pso.opt_tso.oepc_tso.opt-thin001_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:37:50,781 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:37:50,782 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 20:37:50,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:37:50,885 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:37:50,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 207 flow [2023-08-29 20:37:50,965 INFO L130 PetriNetUnfolder]: 2/93 cut-off events. [2023-08-29 20:37:50,965 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:50,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-29 20:37:50,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 207 flow [2023-08-29 20:37:50,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 89 transitions, 187 flow [2023-08-29 20:37:50,977 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:37:50,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 89 transitions, 187 flow [2023-08-29 20:37:50,987 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 89 transitions, 187 flow [2023-08-29 20:37:50,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 89 transitions, 187 flow [2023-08-29 20:37:51,011 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2023-08-29 20:37:51,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:51,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-29 20:37:51,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-29 20:37:53,415 INFO L134 LiptonReduction]: Checked pairs total: 3057 [2023-08-29 20:37:53,415 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-29 20:37:53,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:37:53,442 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;@18df0c99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:37:53,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 20:37:53,444 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:37:53,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:53,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:53,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:37:53,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:53,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:53,451 INFO L85 PathProgramCache]: Analyzing trace with hash 341, now seen corresponding path program 1 times [2023-08-29 20:37:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:53,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262323327] [2023-08-29 20:37:53,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262323327] [2023-08-29 20:37:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262323327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:53,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:53,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:37:53,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004857723] [2023-08-29 20:37:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:53,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:37:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:53,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:37:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:37:53,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 187 [2023-08-29 20:37:53,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:53,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:53,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 187 [2023-08-29 20:37:53,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:53,767 INFO L130 PetriNetUnfolder]: 272/454 cut-off events. [2023-08-29 20:37:53,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:53,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 454 events. 272/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1974 event pairs, 272 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 906. Up to 433 conditions per place. [2023-08-29 20:37:53,775 INFO L137 encePairwiseOnDemand]: 180/187 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-29 20:37:53,775 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-29 20:37:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:37:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:37:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 203 transitions. [2023-08-29 20:37:53,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427807486631016 [2023-08-29 20:37:53,790 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 203 transitions. [2023-08-29 20:37:53,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 203 transitions. [2023-08-29 20:37:53,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:53,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 203 transitions. [2023-08-29 20:37:53,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:53,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:53,805 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:53,806 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 203 transitions. [2023-08-29 20:37:53,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-29 20:37:53,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:37:53,811 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-29 20:37:53,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-29 20:37:53,816 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-29 20:37:53,816 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-29 20:37:53,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.5) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:53,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:53,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:53,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:37:53,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:53,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1763924736, now seen corresponding path program 1 times [2023-08-29 20:37:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:53,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108596205] [2023-08-29 20:37:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:53,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:53,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:54,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:54,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108596205] [2023-08-29 20:37:54,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108596205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:54,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:54,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:37:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886710453] [2023-08-29 20:37:54,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:54,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:37:54,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:54,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:37:54,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:37:54,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 187 [2023-08-29 20:37:54,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:54,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:54,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 187 [2023-08-29 20:37:54,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:54,843 INFO L130 PetriNetUnfolder]: 372/650 cut-off events. [2023-08-29 20:37:54,843 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:37:54,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 650 events. 372/650 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3274 event pairs, 127 based on Foata normal form. 0/626 useless extension candidates. Maximal degree in co-relation 1289. Up to 267 conditions per place. [2023-08-29 20:37:54,850 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 34 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-29 20:37:54,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 172 flow [2023-08-29 20:37:54,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:37:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:37:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 491 transitions. [2023-08-29 20:37:54,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376114081996435 [2023-08-29 20:37:54,854 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 491 transitions. [2023-08-29 20:37:54,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 491 transitions. [2023-08-29 20:37:54,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:54,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 491 transitions. [2023-08-29 20:37:54,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.83333333333333) internal successors, (491), 6 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:54,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:54,859 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:54,859 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 491 transitions. [2023-08-29 20:37:54,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 172 flow [2023-08-29 20:37:54,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 172 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:37:54,861 INFO L231 Difference]: Finished difference. Result has 35 places, 21 transitions, 70 flow [2023-08-29 20:37:54,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=21} [2023-08-29 20:37:54,862 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-29 20:37:54,862 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 21 transitions, 70 flow [2023-08-29 20:37:54,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.5) internal successors, (459), 6 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:54,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:54,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:37:54,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:54,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1763924700, now seen corresponding path program 1 times [2023-08-29 20:37:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930065893] [2023-08-29 20:37:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:54,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930065893] [2023-08-29 20:37:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930065893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:37:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677865292] [2023-08-29 20:37:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:37:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:37:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:37:55,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-29 20:37:55,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 21 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:55,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-29 20:37:55,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:55,139 INFO L130 PetriNetUnfolder]: 394/709 cut-off events. [2023-08-29 20:37:55,139 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2023-08-29 20:37:55,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 709 events. 394/709 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3840 event pairs, 241 based on Foata normal form. 27/733 useless extension candidates. Maximal degree in co-relation 1545. Up to 536 conditions per place. [2023-08-29 20:37:55,144 INFO L137 encePairwiseOnDemand]: 180/187 looper letters, 26 selfloop transitions, 6 changer transitions 5/40 dead transitions. [2023-08-29 20:37:55,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 208 flow [2023-08-29 20:37:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:37:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:37:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2023-08-29 20:37:55,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-08-29 20:37:55,146 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2023-08-29 20:37:55,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2023-08-29 20:37:55,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:55,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2023-08-29 20:37:55,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,150 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,150 INFO L175 Difference]: Start difference. First operand has 35 places, 21 transitions, 70 flow. Second operand 5 states and 451 transitions. [2023-08-29 20:37:55,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 208 flow [2023-08-29 20:37:55,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:37:55,152 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 118 flow [2023-08-29 20:37:55,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-08-29 20:37:55,153 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-29 20:37:55,153 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 118 flow [2023-08-29 20:37:55,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:55,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:55,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:37:55,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:55,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1152911817, now seen corresponding path program 1 times [2023-08-29 20:37:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:55,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223898100] [2023-08-29 20:37:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:55,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:55,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:55,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223898100] [2023-08-29 20:37:55,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223898100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:55,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:55,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:37:55,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352879333] [2023-08-29 20:37:55,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:55,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:37:55,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:37:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:37:55,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-29 20:37:55,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:55,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-29 20:37:55,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:55,405 INFO L130 PetriNetUnfolder]: 367/663 cut-off events. [2023-08-29 20:37:55,405 INFO L131 PetriNetUnfolder]: For 835/835 co-relation queries the response was YES. [2023-08-29 20:37:55,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1948 conditions, 663 events. 367/663 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3544 event pairs, 75 based on Foata normal form. 42/701 useless extension candidates. Maximal degree in co-relation 1938. Up to 333 conditions per place. [2023-08-29 20:37:55,410 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 32 selfloop transitions, 6 changer transitions 2/43 dead transitions. [2023-08-29 20:37:55,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 290 flow [2023-08-29 20:37:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:37:55,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:37:55,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2023-08-29 20:37:55,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-08-29 20:37:55,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2023-08-29 20:37:55,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2023-08-29 20:37:55,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:55,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2023-08-29 20:37:55,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,417 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,417 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 118 flow. Second operand 5 states and 451 transitions. [2023-08-29 20:37:55,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 290 flow [2023-08-29 20:37:55,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 277 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:37:55,421 INFO L231 Difference]: Finished difference. Result has 45 places, 28 transitions, 158 flow [2023-08-29 20:37:55,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=28} [2023-08-29 20:37:55,422 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-08-29 20:37:55,422 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 28 transitions, 158 flow [2023-08-29 20:37:55,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:55,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:55,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:37:55,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:55,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash 186378363, now seen corresponding path program 1 times [2023-08-29 20:37:55,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989922766] [2023-08-29 20:37:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:55,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:55,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989922766] [2023-08-29 20:37:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989922766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:37:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977265617] [2023-08-29 20:37:55,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:55,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:37:55,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:55,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:37:55,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:37:55,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 187 [2023-08-29 20:37:55,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 28 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:55,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 187 [2023-08-29 20:37:55,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:55,956 INFO L130 PetriNetUnfolder]: 534/1020 cut-off events. [2023-08-29 20:37:55,957 INFO L131 PetriNetUnfolder]: For 1754/1754 co-relation queries the response was YES. [2023-08-29 20:37:55,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 1020 events. 534/1020 cut-off events. For 1754/1754 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6575 event pairs, 271 based on Foata normal form. 30/1040 useless extension candidates. Maximal degree in co-relation 3134. Up to 391 conditions per place. [2023-08-29 20:37:55,964 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 41 selfloop transitions, 9 changer transitions 4/57 dead transitions. [2023-08-29 20:37:55,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 426 flow [2023-08-29 20:37:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:37:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:37:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2023-08-29 20:37:55,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385026737967914 [2023-08-29 20:37:55,967 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2023-08-29 20:37:55,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2023-08-29 20:37:55,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:55,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2023-08-29 20:37:55,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,971 INFO L175 Difference]: Start difference. First operand has 45 places, 28 transitions, 158 flow. Second operand 6 states and 492 transitions. [2023-08-29 20:37:55,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 426 flow [2023-08-29 20:37:55,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:37:55,975 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 232 flow [2023-08-29 20:37:55,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=232, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-08-29 20:37:55,976 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2023-08-29 20:37:55,976 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 232 flow [2023-08-29 20:37:55,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:55,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:55,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:55,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:37:55,977 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:55,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:55,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1152898363, now seen corresponding path program 1 times [2023-08-29 20:37:55,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:55,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334707891] [2023-08-29 20:37:55,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:55,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:56,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:56,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334707891] [2023-08-29 20:37:56,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334707891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:56,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:56,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:37:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603843763] [2023-08-29 20:37:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:56,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:37:56,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:37:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:37:56,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:37:56,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 232 flow. Second operand has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:56,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:56,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:37:56,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:56,409 INFO L130 PetriNetUnfolder]: 1120/2026 cut-off events. [2023-08-29 20:37:56,409 INFO L131 PetriNetUnfolder]: For 4219/4219 co-relation queries the response was YES. [2023-08-29 20:37:56,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6210 conditions, 2026 events. 1120/2026 cut-off events. For 4219/4219 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 14207 event pairs, 223 based on Foata normal form. 116/2128 useless extension candidates. Maximal degree in co-relation 6193. Up to 797 conditions per place. [2023-08-29 20:37:56,422 INFO L137 encePairwiseOnDemand]: 179/187 looper letters, 55 selfloop transitions, 23 changer transitions 7/87 dead transitions. [2023-08-29 20:37:56,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 726 flow [2023-08-29 20:37:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:37:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:37:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 802 transitions. [2023-08-29 20:37:56,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47653000594177064 [2023-08-29 20:37:56,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 802 transitions. [2023-08-29 20:37:56,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 802 transitions. [2023-08-29 20:37:56,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:56,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 802 transitions. [2023-08-29 20:37:56,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 89.11111111111111) internal successors, (802), 9 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:56,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:56,430 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:56,430 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 232 flow. Second operand 9 states and 802 transitions. [2023-08-29 20:37:56,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 726 flow [2023-08-29 20:37:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 87 transitions, 717 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 20:37:56,437 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 482 flow [2023-08-29 20:37:56,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=482, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-08-29 20:37:56,438 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 34 predicate places. [2023-08-29 20:37:56,438 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 482 flow [2023-08-29 20:37:56,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.0) internal successors, (415), 5 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:56,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:56,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:37:56,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:56,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash -958616748, now seen corresponding path program 1 times [2023-08-29 20:37:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025215133] [2023-08-29 20:37:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:56,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:56,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:56,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025215133] [2023-08-29 20:37:56,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025215133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:56,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:56,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:37:56,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438824636] [2023-08-29 20:37:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:37:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:37:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:37:56,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 187 [2023-08-29 20:37:56,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 482 flow. Second operand has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:56,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:56,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 187 [2023-08-29 20:37:56,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:57,273 INFO L130 PetriNetUnfolder]: 1767/3111 cut-off events. [2023-08-29 20:37:57,273 INFO L131 PetriNetUnfolder]: For 15515/15539 co-relation queries the response was YES. [2023-08-29 20:37:57,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11611 conditions, 3111 events. 1767/3111 cut-off events. For 15515/15539 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 22312 event pairs, 1073 based on Foata normal form. 88/3151 useless extension candidates. Maximal degree in co-relation 11587. Up to 1018 conditions per place. [2023-08-29 20:37:57,294 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 62 selfloop transitions, 13 changer transitions 10/90 dead transitions. [2023-08-29 20:37:57,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 982 flow [2023-08-29 20:37:57,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:37:57,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:37:57,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 484 transitions. [2023-08-29 20:37:57,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2023-08-29 20:37:57,296 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 484 transitions. [2023-08-29 20:37:57,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 484 transitions. [2023-08-29 20:37:57,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:57,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 484 transitions. [2023-08-29 20:37:57,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:57,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:57,300 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:57,300 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 482 flow. Second operand 6 states and 484 transitions. [2023-08-29 20:37:57,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 982 flow [2023-08-29 20:37:57,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 933 flow, removed 23 selfloop flow, removed 1 redundant places. [2023-08-29 20:37:57,353 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 525 flow [2023-08-29 20:37:57,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=525, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-08-29 20:37:57,354 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 40 predicate places. [2023-08-29 20:37:57,354 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 525 flow [2023-08-29 20:37:57,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.71428571428571) internal successors, (523), 7 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:57,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:57,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:57,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:37:57,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:57,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:57,355 INFO L85 PathProgramCache]: Analyzing trace with hash -560141704, now seen corresponding path program 2 times [2023-08-29 20:37:57,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:57,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576452479] [2023-08-29 20:37:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:57,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:57,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:57,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576452479] [2023-08-29 20:37:57,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576452479] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:57,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:57,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:37:57,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561661870] [2023-08-29 20:37:57,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:57,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:37:57,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:57,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:37:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:37:57,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 187 [2023-08-29 20:37:57,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 525 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:57,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:57,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 187 [2023-08-29 20:37:57,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:58,363 INFO L130 PetriNetUnfolder]: 2415/4466 cut-off events. [2023-08-29 20:37:58,364 INFO L131 PetriNetUnfolder]: For 16163/16197 co-relation queries the response was YES. [2023-08-29 20:37:58,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15299 conditions, 4466 events. 2415/4466 cut-off events. For 16163/16197 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 34817 event pairs, 1907 based on Foata normal form. 103/4514 useless extension candidates. Maximal degree in co-relation 15273. Up to 1665 conditions per place. [2023-08-29 20:37:58,392 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 69 selfloop transitions, 16 changer transitions 10/100 dead transitions. [2023-08-29 20:37:58,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 100 transitions, 1105 flow [2023-08-29 20:37:58,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 20:37:58,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 20:37:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 628 transitions. [2023-08-29 20:37:58,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197860962566845 [2023-08-29 20:37:58,395 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 628 transitions. [2023-08-29 20:37:58,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 628 transitions. [2023-08-29 20:37:58,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:58,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 628 transitions. [2023-08-29 20:37:58,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.5) internal successors, (628), 8 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:58,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:58,399 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:58,399 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 525 flow. Second operand 8 states and 628 transitions. [2023-08-29 20:37:58,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 100 transitions, 1105 flow [2023-08-29 20:37:58,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 100 transitions, 1053 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-29 20:37:58,514 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 637 flow [2023-08-29 20:37:58,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-08-29 20:37:58,515 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2023-08-29 20:37:58,515 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 637 flow [2023-08-29 20:37:58,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:58,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:58,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:37:58,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:58,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1380113554, now seen corresponding path program 1 times [2023-08-29 20:37:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:58,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318521459] [2023-08-29 20:37:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:58,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:58,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:58,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318521459] [2023-08-29 20:37:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318521459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:58,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:58,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:37:58,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416470583] [2023-08-29 20:37:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:58,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:37:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:37:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:37:58,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:37:58,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 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) [2023-08-29 20:37:58,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:58,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:37:58,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:37:59,429 INFO L130 PetriNetUnfolder]: 3141/5804 cut-off events. [2023-08-29 20:37:59,430 INFO L131 PetriNetUnfolder]: For 19399/19431 co-relation queries the response was YES. [2023-08-29 20:37:59,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19659 conditions, 5804 events. 3141/5804 cut-off events. For 19399/19431 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 48568 event pairs, 421 based on Foata normal form. 84/5880 useless extension candidates. Maximal degree in co-relation 19631. Up to 2807 conditions per place. [2023-08-29 20:37:59,476 INFO L137 encePairwiseOnDemand]: 179/187 looper letters, 67 selfloop transitions, 30 changer transitions 15/121 dead transitions. [2023-08-29 20:37:59,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 121 transitions, 1353 flow [2023-08-29 20:37:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 20:37:59,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 20:37:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 794 transitions. [2023-08-29 20:37:59,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47177658942364825 [2023-08-29 20:37:59,480 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 794 transitions. [2023-08-29 20:37:59,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 794 transitions. [2023-08-29 20:37:59,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:37:59,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 794 transitions. [2023-08-29 20:37:59,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:59,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:59,487 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:59,487 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 637 flow. Second operand 9 states and 794 transitions. [2023-08-29 20:37:59,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 121 transitions, 1353 flow [2023-08-29 20:37:59,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 121 transitions, 1335 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-29 20:37:59,560 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 984 flow [2023-08-29 20:37:59,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=984, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2023-08-29 20:37:59,561 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 61 predicate places. [2023-08-29 20:37:59,562 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 984 flow [2023-08-29 20:37:59,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.2) internal successors, (416), 5 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) [2023-08-29 20:37:59,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:37:59,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:37:59,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:37:59,563 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:37:59,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:37:59,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1380106827, now seen corresponding path program 1 times [2023-08-29 20:37:59,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:37:59,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365280671] [2023-08-29 20:37:59,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:37:59,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:37:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:37:59,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:37:59,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:37:59,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365280671] [2023-08-29 20:37:59,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365280671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:37:59,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:37:59,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:37:59,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583716987] [2023-08-29 20:37:59,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:37:59,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:37:59,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:37:59,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:37:59,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:37:59,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-29 20:37:59,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 984 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:37:59,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:37:59,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-29 20:37:59,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:00,311 INFO L130 PetriNetUnfolder]: 2070/4204 cut-off events. [2023-08-29 20:38:00,311 INFO L131 PetriNetUnfolder]: For 24678/24730 co-relation queries the response was YES. [2023-08-29 20:38:00,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16583 conditions, 4204 events. 2070/4204 cut-off events. For 24678/24730 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 36375 event pairs, 1532 based on Foata normal form. 88/4260 useless extension candidates. Maximal degree in co-relation 16547. Up to 3178 conditions per place. [2023-08-29 20:38:00,341 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 59 selfloop transitions, 24 changer transitions 9/104 dead transitions. [2023-08-29 20:38:00,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 1417 flow [2023-08-29 20:38:00,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:38:00,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:38:00,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 451 transitions. [2023-08-29 20:38:00,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-08-29 20:38:00,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 451 transitions. [2023-08-29 20:38:00,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 451 transitions. [2023-08-29 20:38:00,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:00,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 451 transitions. [2023-08-29 20:38:00,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.2) internal successors, (451), 5 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:00,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:00,347 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:00,347 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 984 flow. Second operand 5 states and 451 transitions. [2023-08-29 20:38:00,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 1417 flow [2023-08-29 20:38:00,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 1385 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-29 20:38:00,429 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 1097 flow [2023-08-29 20:38:00,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1097, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2023-08-29 20:38:00,430 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 66 predicate places. [2023-08-29 20:38:00,430 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 1097 flow [2023-08-29 20:38:00,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:00,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:00,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:00,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:38:00,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:00,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:00,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1730541238, now seen corresponding path program 1 times [2023-08-29 20:38:00,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:00,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431147556] [2023-08-29 20:38:00,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:00,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:38:00,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:00,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431147556] [2023-08-29 20:38:00,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431147556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:00,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:00,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:38:00,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142541275] [2023-08-29 20:38:00,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:00,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:38:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:38:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:38:00,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:38:00,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 1097 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:00,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:00,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:38:00,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:01,261 INFO L130 PetriNetUnfolder]: 2648/5074 cut-off events. [2023-08-29 20:38:01,261 INFO L131 PetriNetUnfolder]: For 28180/28290 co-relation queries the response was YES. [2023-08-29 20:38:01,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19555 conditions, 5074 events. 2648/5074 cut-off events. For 28180/28290 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 42887 event pairs, 438 based on Foata normal form. 116/5152 useless extension candidates. Maximal degree in co-relation 19516. Up to 1288 conditions per place. [2023-08-29 20:38:01,298 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 77 selfloop transitions, 19 changer transitions 24/127 dead transitions. [2023-08-29 20:38:01,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 127 transitions, 1856 flow [2023-08-29 20:38:01,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:38:01,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:38:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 617 transitions. [2023-08-29 20:38:01,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47135217723453016 [2023-08-29 20:38:01,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 617 transitions. [2023-08-29 20:38:01,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 617 transitions. [2023-08-29 20:38:01,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:01,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 617 transitions. [2023-08-29 20:38:01,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.14285714285714) internal successors, (617), 7 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:01,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:01,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:01,307 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 1097 flow. Second operand 7 states and 617 transitions. [2023-08-29 20:38:01,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 127 transitions, 1856 flow [2023-08-29 20:38:01,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 127 transitions, 1731 flow, removed 59 selfloop flow, removed 1 redundant places. [2023-08-29 20:38:01,454 INFO L231 Difference]: Finished difference. Result has 110 places, 75 transitions, 1003 flow [2023-08-29 20:38:01,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1003, PETRI_PLACES=110, PETRI_TRANSITIONS=75} [2023-08-29 20:38:01,455 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 75 predicate places. [2023-08-29 20:38:01,455 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 75 transitions, 1003 flow [2023-08-29 20:38:01,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:01,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:01,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:01,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:38:01,456 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:01,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:01,457 INFO L85 PathProgramCache]: Analyzing trace with hash -668207004, now seen corresponding path program 1 times [2023-08-29 20:38:01,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:01,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924701912] [2023-08-29 20:38:01,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:01,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:38:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924701912] [2023-08-29 20:38:01,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924701912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 20:38:01,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521458304] [2023-08-29 20:38:01,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:01,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 20:38:01,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 20:38:01,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 20:38:01,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 187 [2023-08-29 20:38:01,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 75 transitions, 1003 flow. Second operand has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:01,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:01,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 187 [2023-08-29 20:38:01,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:02,523 INFO L130 PetriNetUnfolder]: 2293/4264 cut-off events. [2023-08-29 20:38:02,523 INFO L131 PetriNetUnfolder]: For 30330/30379 co-relation queries the response was YES. [2023-08-29 20:38:02,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17642 conditions, 4264 events. 2293/4264 cut-off events. For 30330/30379 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 33129 event pairs, 1581 based on Foata normal form. 109/4317 useless extension candidates. Maximal degree in co-relation 17599. Up to 2395 conditions per place. [2023-08-29 20:38:02,553 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 60 selfloop transitions, 18 changer transitions 6/94 dead transitions. [2023-08-29 20:38:02,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 1215 flow [2023-08-29 20:38:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:38:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:38:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 542 transitions. [2023-08-29 20:38:02,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140565317035905 [2023-08-29 20:38:02,556 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 542 transitions. [2023-08-29 20:38:02,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 542 transitions. [2023-08-29 20:38:02,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:02,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 542 transitions. [2023-08-29 20:38:02,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.42857142857143) internal successors, (542), 7 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:02,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:02,560 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:02,561 INFO L175 Difference]: Start difference. First operand has 110 places, 75 transitions, 1003 flow. Second operand 7 states and 542 transitions. [2023-08-29 20:38:02,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 94 transitions, 1215 flow [2023-08-29 20:38:02,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 1065 flow, removed 24 selfloop flow, removed 21 redundant places. [2023-08-29 20:38:02,674 INFO L231 Difference]: Finished difference. Result has 88 places, 62 transitions, 648 flow [2023-08-29 20:38:02,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=648, PETRI_PLACES=88, PETRI_TRANSITIONS=62} [2023-08-29 20:38:02,676 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 53 predicate places. [2023-08-29 20:38:02,677 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 62 transitions, 648 flow [2023-08-29 20:38:02,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.71428571428571) internal successors, (516), 7 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:02,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:02,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:02,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:38:02,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:02,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:02,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1288965398, now seen corresponding path program 1 times [2023-08-29 20:38:02,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:02,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050942829] [2023-08-29 20:38:02,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:02,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:38:02,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:02,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050942829] [2023-08-29 20:38:02,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050942829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:02,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:02,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:38:02,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895598202] [2023-08-29 20:38:02,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:02,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:38:02,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:02,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:38:02,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:38:02,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:38:02,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 62 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:02,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:02,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:38:02,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:03,315 INFO L130 PetriNetUnfolder]: 2334/4539 cut-off events. [2023-08-29 20:38:03,315 INFO L131 PetriNetUnfolder]: For 18192/18234 co-relation queries the response was YES. [2023-08-29 20:38:03,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16264 conditions, 4539 events. 2334/4539 cut-off events. For 18192/18234 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 37206 event pairs, 645 based on Foata normal form. 114/4648 useless extension candidates. Maximal degree in co-relation 16238. Up to 1486 conditions per place. [2023-08-29 20:38:03,338 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 29 selfloop transitions, 6 changer transitions 67/104 dead transitions. [2023-08-29 20:38:03,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 1225 flow [2023-08-29 20:38:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:38:03,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:38:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2023-08-29 20:38:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-29 20:38:03,341 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2023-08-29 20:38:03,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2023-08-29 20:38:03,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:03,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2023-08-29 20:38:03,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,345 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,346 INFO L175 Difference]: Start difference. First operand has 88 places, 62 transitions, 648 flow. Second operand 6 states and 530 transitions. [2023-08-29 20:38:03,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 1225 flow [2023-08-29 20:38:03,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 104 transitions, 1170 flow, removed 13 selfloop flow, removed 5 redundant places. [2023-08-29 20:38:03,434 INFO L231 Difference]: Finished difference. Result has 92 places, 31 transitions, 291 flow [2023-08-29 20:38:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=92, PETRI_TRANSITIONS=31} [2023-08-29 20:38:03,435 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 57 predicate places. [2023-08-29 20:38:03,435 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 31 transitions, 291 flow [2023-08-29 20:38:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:03,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:03,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:38:03,436 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:03,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash -319489194, now seen corresponding path program 1 times [2023-08-29 20:38:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806668548] [2023-08-29 20:38:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:03,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:38:03,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:03,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806668548] [2023-08-29 20:38:03,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806668548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:03,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:03,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:38:03,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579866069] [2023-08-29 20:38:03,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:03,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:38:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:03,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:38:03,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:38:03,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-29 20:38:03,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 31 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:03,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-29 20:38:03,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:03,679 INFO L130 PetriNetUnfolder]: 509/937 cut-off events. [2023-08-29 20:38:03,679 INFO L131 PetriNetUnfolder]: For 6445/6449 co-relation queries the response was YES. [2023-08-29 20:38:03,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 937 events. 509/937 cut-off events. For 6445/6449 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4760 event pairs, 199 based on Foata normal form. 84/1010 useless extension candidates. Maximal degree in co-relation 3523. Up to 396 conditions per place. [2023-08-29 20:38:03,683 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-08-29 20:38:03,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 40 transitions, 391 flow [2023-08-29 20:38:03,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:38:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:38:03,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-08-29 20:38:03,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572192513368984 [2023-08-29 20:38:03,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-08-29 20:38:03,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-08-29 20:38:03,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:03,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-08-29 20:38:03,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,700 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,700 INFO L175 Difference]: Start difference. First operand has 92 places, 31 transitions, 291 flow. Second operand 6 states and 513 transitions. [2023-08-29 20:38:03,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 40 transitions, 391 flow [2023-08-29 20:38:03,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 40 transitions, 281 flow, removed 24 selfloop flow, removed 19 redundant places. [2023-08-29 20:38:03,709 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-08-29 20:38:03,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-08-29 20:38:03,709 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 26 predicate places. [2023-08-29 20:38:03,710 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-08-29 20:38:03,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.0) internal successors, (498), 6 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:03,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-29 20:38:03,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-29 20:38:03,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-29 20:38:03,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-29 20:38:03,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-29 20:38:03,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-29 20:38:03,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-29 20:38:03,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-29 20:38:03,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-29 20:38:03,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-29 20:38:03,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-29 20:38:03,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:38:03,714 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:03,717 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:38:03,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:38:03,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:38:03 BasicIcfg [2023-08-29 20:38:03,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:38:03,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:38:03,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:38:03,721 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:38:03,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:37:50" (3/4) ... [2023-08-29 20:38:03,724 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:38:03,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:38:03,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:38:03,729 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:38:03,734 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-29 20:38:03,734 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:38:03,734 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:38:03,734 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:38:03,767 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:38:03,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:38:03,768 INFO L158 Benchmark]: Toolchain (without parser) took 13962.52ms. Allocated memory was 69.2MB in the beginning and 1.0GB in the end (delta: 950.0MB). Free memory was 42.9MB in the beginning and 871.7MB in the end (delta: -828.7MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,768 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:38:03,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 431.83ms. Allocated memory is still 69.2MB. Free memory was 42.8MB in the beginning and 40.1MB in the end (delta: 2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,769 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.95ms. Allocated memory is still 69.2MB. Free memory was 40.1MB in the beginning and 37.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,769 INFO L158 Benchmark]: Boogie Preprocessor took 43.99ms. Allocated memory is still 69.2MB. Free memory was 37.8MB in the beginning and 36.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,769 INFO L158 Benchmark]: RCFGBuilder took 414.83ms. Allocated memory is still 69.2MB. Free memory was 36.3MB in the beginning and 41.4MB in the end (delta: -5.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,770 INFO L158 Benchmark]: TraceAbstraction took 12960.89ms. Allocated memory was 69.2MB in the beginning and 1.0GB in the end (delta: 950.0MB). Free memory was 40.6MB in the beginning and 874.8MB in the end (delta: -834.2MB). Peak memory consumption was 710.8MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,770 INFO L158 Benchmark]: Witness Printer took 46.44ms. Allocated memory is still 1.0GB. Free memory was 874.8MB in the beginning and 871.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 20:38:03,772 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.5MB in the beginning and 34.5MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 431.83ms. Allocated memory is still 69.2MB. Free memory was 42.8MB in the beginning and 40.1MB in the end (delta: 2.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.95ms. Allocated memory is still 69.2MB. Free memory was 40.1MB in the beginning and 37.8MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.99ms. Allocated memory is still 69.2MB. Free memory was 37.8MB in the beginning and 36.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.83ms. Allocated memory is still 69.2MB. Free memory was 36.3MB in the beginning and 41.4MB in the end (delta: -5.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12960.89ms. Allocated memory was 69.2MB in the beginning and 1.0GB in the end (delta: 950.0MB). Free memory was 40.6MB in the beginning and 874.8MB in the end (delta: -834.2MB). Peak memory consumption was 710.8MB. Max. memory is 16.1GB. * Witness Printer took 46.44ms. Allocated memory is still 1.0GB. Free memory was 874.8MB in the beginning and 871.7MB 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: 2.4s, 97 PlacesBefore, 35 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 5 FixpointIterations, 30 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 91 TotalNumberOfCompositions, 3057 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2119, independent: 2036, independent conditional: 0, independent unconditional: 2036, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 863, independent: 845, independent conditional: 0, independent unconditional: 845, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2119, independent: 1191, independent conditional: 0, independent unconditional: 1191, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 863, unknown conditional: 0, unknown unconditional: 863] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 778]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 119 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1074 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 830 mSDsluCounter, 329 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 252 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2303 IncrementalHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 77 mSDtfsCounter, 2303 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1097occurred in iteration=10, InterpolantAutomatonStates: 87, 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, 2.6s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 1729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:38:03,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE