./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_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/safe009_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 e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --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 20:38:42,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:38:42,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:38:42,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:38:42,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:38:42,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:38:42,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:38:42,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:38:42,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:38:42,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:38:42,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:38:42,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:38:42,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:38:42,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:38:42,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:38:42,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:38:42,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:38:42,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:38:42,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:38:42,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:38:42,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:38:42,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:38:42,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:38:42,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:38:42,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:38:42,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:38:42,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:38:42,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:38:42,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:38:42,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:38:42,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:38:42,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:38:42,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:38:42,530 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:38:42,531 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:38:42,531 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:38:42,532 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:38:42,532 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:38:42,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:38:42,533 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:38:42,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:38:42,534 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:38:42,554 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:38:42,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:38:42,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:38:42,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:38:42,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:38:42,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:38:42,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:38:42,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:38:42,556 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:38:42,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:38:42,557 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:38:42,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:38:42,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:38:42,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:38:42,559 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:38:42,559 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:38:42,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:38:42,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:38:42,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:38:42,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:38:42,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:38:42,560 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:38:42,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:38:42,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:38:42,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:38:42,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:38:42,808 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:38:42,808 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:38:42,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:38:43,731 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:38:43,961 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:38:43,961 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:38:43,997 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d983fd4/baee1304dfaf4536b9535a6a7283dd50/FLAG24bcf3e7e [2023-08-29 20:38:44,013 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65d983fd4/baee1304dfaf4536b9535a6a7283dd50 [2023-08-29 20:38:44,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:38:44,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:38:44,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:38:44,019 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:38:44,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:38:44,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c425e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44, skipping insertion in model container [2023-08-29 20:38:44,024 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:38:44,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:38:44,194 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/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:38:44,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:38:44,346 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:38:44,367 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/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-29 20:38:44,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:38:44,424 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:38:44,424 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:38:44,428 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:38:44,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44 WrapperNode [2023-08-29 20:38:44,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:38:44,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:38:44,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:38:44,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:38:44,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,454 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-29 20:38:44,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:38:44,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:38:44,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:38:44,455 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:38:44,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:38:44,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:38:44,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:38:44,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:38:44,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (1/1) ... [2023-08-29 20:38:44,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:38:44,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:38:44,506 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 20:38:44,512 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 20:38:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:38:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:38:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:38:44,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:38:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:38:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:38:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:38:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:38:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:38:44,560 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:38:44,560 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:38:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:38:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:38:44,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:38:44,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:38:44,569 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 20:38:44,657 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:38:44,658 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:38:44,827 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:38:44,833 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:38:44,833 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:38:44,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:38:44 BoogieIcfgContainer [2023-08-29 20:38:44,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:38:44,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:38:44,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:38:44,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:38:44,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:38:44" (1/3) ... [2023-08-29 20:38:44,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58753b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:38:44, skipping insertion in model container [2023-08-29 20:38:44,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:38:44" (2/3) ... [2023-08-29 20:38:44,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58753b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:38:44, skipping insertion in model container [2023-08-29 20:38:44,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:38:44" (3/3) ... [2023-08-29 20:38:44,840 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-29 20:38:44,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:38:44,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-29 20:38:44,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:38:44,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:38:44,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 201 flow [2023-08-29 20:38:45,007 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-08-29 20:38:45,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:38:45,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2023-08-29 20:38:45,011 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 201 flow [2023-08-29 20:38:45,013 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 86 transitions, 181 flow [2023-08-29 20:38:45,016 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:38:45,025 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 86 transitions, 181 flow [2023-08-29 20:38:45,028 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 86 transitions, 181 flow [2023-08-29 20:38:45,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 86 transitions, 181 flow [2023-08-29 20:38:45,054 INFO L130 PetriNetUnfolder]: 2/86 cut-off events. [2023-08-29 20:38:45,054 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:38:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 86 events. 2/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2023-08-29 20:38:45,056 INFO L119 LiptonReduction]: Number of co-enabled transitions 1434 [2023-08-29 20:38:47,278 INFO L134 LiptonReduction]: Checked pairs total: 2976 [2023-08-29 20:38:47,278 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-29 20:38:47,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:38:47,291 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;@4ced9500, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:38:47,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-29 20:38:47,292 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:38:47,292 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:38:47,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:47,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:38:47,293 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 20:38:47,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:47,295 INFO L85 PathProgramCache]: Analyzing trace with hash 338, now seen corresponding path program 1 times [2023-08-29 20:38:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:47,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415385323] [2023-08-29 20:38:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:38:47,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:47,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415385323] [2023-08-29 20:38:47,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415385323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:47,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:47,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:38:47,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073770524] [2023-08-29 20:38:47,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:47,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:38:47,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:47,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:38:47,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:38:47,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 189 [2023-08-29 20:38:47,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 57 flow. Second operand has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:47,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:47,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 189 [2023-08-29 20:38:47,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:47,452 INFO L130 PetriNetUnfolder]: 218/356 cut-off events. [2023-08-29 20:38:47,452 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:38:47,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 356 events. 218/356 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1401 event pairs, 218 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 727. Up to 352 conditions per place. [2023-08-29 20:38:47,455 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 15 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-29 20:38:47,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 17 transitions, 73 flow [2023-08-29 20:38:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:38:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:38:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-08-29 20:38:47,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2023-08-29 20:38:47,464 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-08-29 20:38:47,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-08-29 20:38:47,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:47,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-08-29 20:38:47,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 20:38:47,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 20:38:47,471 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 20:38:47,472 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 57 flow. Second operand 2 states and 196 transitions. [2023-08-29 20:38:47,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 17 transitions, 73 flow [2023-08-29 20:38:47,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 70 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:38:47,474 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 40 flow [2023-08-29 20:38:47,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-08-29 20:38:47,477 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -8 predicate places. [2023-08-29 20:38:47,477 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 40 flow [2023-08-29 20:38:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.5) internal successors, (175), 2 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:38:47,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:47,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2127347204, now seen corresponding path program 1 times [2023-08-29 20:38:47,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:47,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502732591] [2023-08-29 20:38:47,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:47,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:47,798 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 20:38:47,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:47,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502732591] [2023-08-29 20:38:47,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502732591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:47,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:47,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:38:47,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001214218] [2023-08-29 20:38:47,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:47,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:38:47,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:47,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:38:47,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:38:47,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-29 20:38:47,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:47,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:47,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-29 20:38:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:47,888 INFO L130 PetriNetUnfolder]: 408/688 cut-off events. [2023-08-29 20:38:47,889 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:38:47,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 688 events. 408/688 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3288 event pairs, 155 based on Foata normal form. 0/655 useless extension candidates. Maximal degree in co-relation 1399. Up to 426 conditions per place. [2023-08-29 20:38:47,892 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 23 selfloop transitions, 6 changer transitions 0/30 dead transitions. [2023-08-29 20:38:47,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 128 flow [2023-08-29 20:38:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:38:47,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:38:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-29 20:38:47,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-29 20:38:47,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-29 20:38:47,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-29 20:38:47,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:47,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-29 20:38:47,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 20:38:47,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:47,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:47,897 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 40 flow. Second operand 3 states and 270 transitions. [2023-08-29 20:38:47,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 128 flow [2023-08-29 20:38:47,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 128 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:38:47,898 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 86 flow [2023-08-29 20:38:47,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-08-29 20:38:47,899 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -4 predicate places. [2023-08-29 20:38:47,899 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 86 flow [2023-08-29 20:38:47,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:47,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:47,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:47,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:38:47,900 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:47,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:47,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2127347210, now seen corresponding path program 1 times [2023-08-29 20:38:47,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:47,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729394532] [2023-08-29 20:38:47,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:47,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:48,094 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 20:38:48,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:48,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729394532] [2023-08-29 20:38:48,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729394532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:48,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:48,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:38:48,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405177863] [2023-08-29 20:38:48,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:48,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:38:48,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:48,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:38:48,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:38:48,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 189 [2023-08-29 20:38:48,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 20:38:48,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:48,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 189 [2023-08-29 20:38:48,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:48,299 INFO L130 PetriNetUnfolder]: 317/559 cut-off events. [2023-08-29 20:38:48,299 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2023-08-29 20:38:48,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 559 events. 317/559 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2640 event pairs, 75 based on Foata normal form. 17/576 useless extension candidates. Maximal degree in co-relation 1497. Up to 455 conditions per place. [2023-08-29 20:38:48,302 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 27 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2023-08-29 20:38:48,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 212 flow [2023-08-29 20:38:48,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:38:48,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:38:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-29 20:38:48,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41693121693121693 [2023-08-29 20:38:48,305 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-29 20:38:48,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-29 20:38:48,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:48,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-29 20:38:48,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 20:38:48,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:48,308 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:48,308 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 86 flow. Second operand 5 states and 394 transitions. [2023-08-29 20:38:48,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 212 flow [2023-08-29 20:38:48,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:38:48,310 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 113 flow [2023-08-29 20:38:48,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=113, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-29 20:38:48,311 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-29 20:38:48,311 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 113 flow [2023-08-29 20:38:48,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 20:38:48,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:48,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:48,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:38:48,312 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:48,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:48,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1523252053, now seen corresponding path program 1 times [2023-08-29 20:38:48,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:48,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940204413] [2023-08-29 20:38:48,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:48,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:48,545 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 20:38:48,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:48,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940204413] [2023-08-29 20:38:48,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940204413] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:48,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:48,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:38:48,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557092261] [2023-08-29 20:38:48,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:48,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:38:48,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:48,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:38:48,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:38:48,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 189 [2023-08-29 20:38:48,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:48,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:48,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 189 [2023-08-29 20:38:48,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:48,799 INFO L130 PetriNetUnfolder]: 538/915 cut-off events. [2023-08-29 20:38:48,799 INFO L131 PetriNetUnfolder]: For 477/477 co-relation queries the response was YES. [2023-08-29 20:38:48,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2351 conditions, 915 events. 538/915 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4567 event pairs, 154 based on Foata normal form. 70/967 useless extension candidates. Maximal degree in co-relation 2344. Up to 376 conditions per place. [2023-08-29 20:38:48,802 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 33 selfloop transitions, 7 changer transitions 18/60 dead transitions. [2023-08-29 20:38:48,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 352 flow [2023-08-29 20:38:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:38:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:38:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 526 transitions. [2023-08-29 20:38:48,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975812547241119 [2023-08-29 20:38:48,804 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 526 transitions. [2023-08-29 20:38:48,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 526 transitions. [2023-08-29 20:38:48,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:48,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 526 transitions. [2023-08-29 20:38:48,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 20:38:48,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 20:38:48,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 20:38:48,808 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 113 flow. Second operand 7 states and 526 transitions. [2023-08-29 20:38:48,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 352 flow [2023-08-29 20:38:48,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 60 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:38:48,810 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 166 flow [2023-08-29 20:38:48,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=166, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-29 20:38:48,810 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-29 20:38:48,811 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 166 flow [2023-08-29 20:38:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:48,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:48,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:48,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:38:48,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:48,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1471028827, now seen corresponding path program 1 times [2023-08-29 20:38:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809603375] [2023-08-29 20:38:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:48,909 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 20:38:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809603375] [2023-08-29 20:38:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809603375] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:48,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:48,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:38:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154506223] [2023-08-29 20:38:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:38:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:48,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:38:48,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:38:48,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 189 [2023-08-29 20:38:48,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 20:38:48,915 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:48,915 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 189 [2023-08-29 20:38:48,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:48,976 INFO L130 PetriNetUnfolder]: 345/609 cut-off events. [2023-08-29 20:38:48,976 INFO L131 PetriNetUnfolder]: For 859/860 co-relation queries the response was YES. [2023-08-29 20:38:48,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 609 events. 345/609 cut-off events. For 859/860 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2672 event pairs, 112 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 1823. Up to 537 conditions per place. [2023-08-29 20:38:48,979 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 34 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-29 20:38:48,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 310 flow [2023-08-29 20:38:48,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:38:48,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:38:48,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-29 20:38:48,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49029982363315694 [2023-08-29 20:38:48,981 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-29 20:38:48,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-29 20:38:48,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:48,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-29 20:38:48,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 20:38:48,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:48,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:48,983 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 166 flow. Second operand 3 states and 278 transitions. [2023-08-29 20:38:48,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 310 flow [2023-08-29 20:38:48,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 290 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-29 20:38:48,987 INFO L231 Difference]: Finished difference. Result has 40 places, 33 transitions, 191 flow [2023-08-29 20:38:48,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=191, PETRI_PLACES=40, PETRI_TRANSITIONS=33} [2023-08-29 20:38:48,987 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-29 20:38:48,987 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 33 transitions, 191 flow [2023-08-29 20:38:48,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 20:38:48,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:48,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:48,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:38:48,988 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 20:38:48,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:48,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1642747929, now seen corresponding path program 1 times [2023-08-29 20:38:48,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:48,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245325998] [2023-08-29 20:38:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:48,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:49,065 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 20:38:49,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:49,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245325998] [2023-08-29 20:38:49,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245325998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:49,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:49,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:38:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413603357] [2023-08-29 20:38:49,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:49,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:38:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:38:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:38:49,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 189 [2023-08-29 20:38:49,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:49,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:49,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 189 [2023-08-29 20:38:49,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:49,180 INFO L130 PetriNetUnfolder]: 479/816 cut-off events. [2023-08-29 20:38:49,180 INFO L131 PetriNetUnfolder]: For 886/886 co-relation queries the response was YES. [2023-08-29 20:38:49,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2470 conditions, 816 events. 479/816 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3662 event pairs, 186 based on Foata normal form. 30/846 useless extension candidates. Maximal degree in co-relation 2459. Up to 343 conditions per place. [2023-08-29 20:38:49,185 INFO L137 encePairwiseOnDemand]: 182/189 looper letters, 55 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-08-29 20:38:49,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 66 transitions, 480 flow [2023-08-29 20:38:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:38:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:38:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 437 transitions. [2023-08-29 20:38:49,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624338624338624 [2023-08-29 20:38:49,187 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 437 transitions. [2023-08-29 20:38:49,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 437 transitions. [2023-08-29 20:38:49,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:49,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 437 transitions. [2023-08-29 20:38:49,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 20:38:49,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:49,190 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:49,190 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 191 flow. Second operand 5 states and 437 transitions. [2023-08-29 20:38:49,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 66 transitions, 480 flow [2023-08-29 20:38:49,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 66 transitions, 468 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:38:49,194 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 284 flow [2023-08-29 20:38:49,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=284, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2023-08-29 20:38:49,195 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 14 predicate places. [2023-08-29 20:38:49,196 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 284 flow [2023-08-29 20:38:49,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:49,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:49,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:49,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:38:49,197 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 20:38:49,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash 720212966, now seen corresponding path program 1 times [2023-08-29 20:38:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:49,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471504178] [2023-08-29 20:38:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:49,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:49,418 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 20:38:49,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471504178] [2023-08-29 20:38:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471504178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:49,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:38:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845972969] [2023-08-29 20:38:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:38:49,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:38:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:38:49,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 189 [2023-08-29 20:38:49,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 284 flow. Second operand has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 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 20:38:49,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:49,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 189 [2023-08-29 20:38:49,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:49,650 INFO L130 PetriNetUnfolder]: 354/627 cut-off events. [2023-08-29 20:38:49,650 INFO L131 PetriNetUnfolder]: For 1455/1494 co-relation queries the response was YES. [2023-08-29 20:38:49,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2038 conditions, 627 events. 354/627 cut-off events. For 1455/1494 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2931 event pairs, 252 based on Foata normal form. 64/675 useless extension candidates. Maximal degree in co-relation 2024. Up to 293 conditions per place. [2023-08-29 20:38:49,653 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 25 selfloop transitions, 5 changer transitions 23/57 dead transitions. [2023-08-29 20:38:49,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 450 flow [2023-08-29 20:38:49,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:38:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:38:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 523 transitions. [2023-08-29 20:38:49,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39531368102796677 [2023-08-29 20:38:49,655 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 523 transitions. [2023-08-29 20:38:49,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 523 transitions. [2023-08-29 20:38:49,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:49,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 523 transitions. [2023-08-29 20:38:49,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 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 20:38:49,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 20:38:49,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 20:38:49,658 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 284 flow. Second operand 7 states and 523 transitions. [2023-08-29 20:38:49,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 450 flow [2023-08-29 20:38:49,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 440 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 20:38:49,661 INFO L231 Difference]: Finished difference. Result has 54 places, 31 transitions, 228 flow [2023-08-29 20:38:49,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=228, PETRI_PLACES=54, PETRI_TRANSITIONS=31} [2023-08-29 20:38:49,662 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2023-08-29 20:38:49,662 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 31 transitions, 228 flow [2023-08-29 20:38:49,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.83333333333333) internal successors, (425), 6 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 20:38:49,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:49,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:38:49,663 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 20:38:49,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1475623482, now seen corresponding path program 1 times [2023-08-29 20:38:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054084706] [2023-08-29 20:38:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:49,798 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 20:38:49,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:49,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054084706] [2023-08-29 20:38:49,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054084706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:49,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:49,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:38:49,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698188664] [2023-08-29 20:38:49,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:49,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:38:49,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:49,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:38:49,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:38:49,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 189 [2023-08-29 20:38:49,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 31 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 20:38:49,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:49,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 189 [2023-08-29 20:38:49,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:49,907 INFO L130 PetriNetUnfolder]: 120/234 cut-off events. [2023-08-29 20:38:49,907 INFO L131 PetriNetUnfolder]: For 667/679 co-relation queries the response was YES. [2023-08-29 20:38:49,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 234 events. 120/234 cut-off events. For 667/679 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 844 event pairs, 39 based on Foata normal form. 34/263 useless extension candidates. Maximal degree in co-relation 767. Up to 200 conditions per place. [2023-08-29 20:38:49,908 INFO L137 encePairwiseOnDemand]: 185/189 looper letters, 20 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-29 20:38:49,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 31 transitions, 252 flow [2023-08-29 20:38:49,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:38:49,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:38:49,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-29 20:38:49,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084656084656085 [2023-08-29 20:38:49,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-29 20:38:49,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-29 20:38:49,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:49,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-29 20:38:49,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:49,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:49,913 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:49,913 INFO L175 Difference]: Start difference. First operand has 54 places, 31 transitions, 228 flow. Second operand 5 states and 386 transitions. [2023-08-29 20:38:49,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 31 transitions, 252 flow [2023-08-29 20:38:49,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 31 transitions, 217 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-29 20:38:49,915 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 163 flow [2023-08-29 20:38:49,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2023-08-29 20:38:49,915 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-29 20:38:49,915 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 163 flow [2023-08-29 20:38:49,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.0) internal successors, (375), 5 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 20:38:49,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:49,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:49,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:38:49,916 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 20:38:49,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash 700306242, now seen corresponding path program 1 times [2023-08-29 20:38:49,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:49,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167190474] [2023-08-29 20:38:49,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:49,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:50,009 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 20:38:50,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:50,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167190474] [2023-08-29 20:38:50,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167190474] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:50,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:38:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350025787] [2023-08-29 20:38:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:50,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:38:50,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:38:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:38:50,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 189 [2023-08-29 20:38:50,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:50,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:50,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 189 [2023-08-29 20:38:50,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:50,068 INFO L130 PetriNetUnfolder]: 174/326 cut-off events. [2023-08-29 20:38:50,068 INFO L131 PetriNetUnfolder]: For 427/429 co-relation queries the response was YES. [2023-08-29 20:38:50,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 326 events. 174/326 cut-off events. For 427/429 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1209 event pairs, 35 based on Foata normal form. 12/337 useless extension candidates. Maximal degree in co-relation 955. Up to 168 conditions per place. [2023-08-29 20:38:50,069 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 16 selfloop transitions, 4 changer transitions 19/40 dead transitions. [2023-08-29 20:38:50,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 40 transitions, 288 flow [2023-08-29 20:38:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:38:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:38:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-29 20:38:50,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582010582010582 [2023-08-29 20:38:50,071 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-29 20:38:50,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-29 20:38:50,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:50,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-29 20:38:50,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 20:38:50,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:50,074 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:50,074 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 163 flow. Second operand 5 states and 433 transitions. [2023-08-29 20:38:50,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 40 transitions, 288 flow [2023-08-29 20:38:50,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 278 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:38:50,075 INFO L231 Difference]: Finished difference. Result has 48 places, 16 transitions, 102 flow [2023-08-29 20:38:50,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=48, PETRI_TRANSITIONS=16} [2023-08-29 20:38:50,076 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-29 20:38:50,076 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 16 transitions, 102 flow [2023-08-29 20:38:50,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:50,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:50,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:50,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:38:50,077 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 20:38:50,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:50,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1408342884, now seen corresponding path program 2 times [2023-08-29 20:38:50,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:50,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502483669] [2023-08-29 20:38:50,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:50,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:50,163 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 20:38:50,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:50,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502483669] [2023-08-29 20:38:50,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502483669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:50,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:50,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:38:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337555040] [2023-08-29 20:38:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:50,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:38:50,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:50,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:38:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:38:50,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 189 [2023-08-29 20:38:50,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 16 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 20:38:50,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:50,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 189 [2023-08-29 20:38:50,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:50,204 INFO L130 PetriNetUnfolder]: 42/100 cut-off events. [2023-08-29 20:38:50,204 INFO L131 PetriNetUnfolder]: For 276/280 co-relation queries the response was YES. [2023-08-29 20:38:50,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 100 events. 42/100 cut-off events. For 276/280 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 311 event pairs, 10 based on Foata normal form. 4/102 useless extension candidates. Maximal degree in co-relation 306. Up to 58 conditions per place. [2023-08-29 20:38:50,205 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 15 selfloop transitions, 3 changer transitions 13/33 dead transitions. [2023-08-29 20:38:50,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 33 transitions, 238 flow [2023-08-29 20:38:50,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:38:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:38:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2023-08-29 20:38:50,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4687830687830688 [2023-08-29 20:38:50,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 443 transitions. [2023-08-29 20:38:50,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 443 transitions. [2023-08-29 20:38:50,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:50,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 443 transitions. [2023-08-29 20:38:50,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.6) internal successors, (443), 5 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:38:50,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:50,209 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states 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 20:38:50,209 INFO L175 Difference]: Start difference. First operand has 48 places, 16 transitions, 102 flow. Second operand 5 states and 443 transitions. [2023-08-29 20:38:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 33 transitions, 238 flow [2023-08-29 20:38:50,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 155 flow, removed 12 selfloop flow, removed 17 redundant places. [2023-08-29 20:38:50,210 INFO L231 Difference]: Finished difference. Result has 38 places, 18 transitions, 85 flow [2023-08-29 20:38:50,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=38, PETRI_TRANSITIONS=18} [2023-08-29 20:38:50,210 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-29 20:38:50,211 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 18 transitions, 85 flow [2023-08-29 20:38:50,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 20:38:50,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:50,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:50,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:38:50,211 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 20:38:50,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:50,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1075436215, now seen corresponding path program 1 times [2023-08-29 20:38:50,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:50,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152998149] [2023-08-29 20:38:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:50,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:50,317 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 20:38:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152998149] [2023-08-29 20:38:50,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152998149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:50,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:50,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:38:50,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772761051] [2023-08-29 20:38:50,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:38:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:50,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:38:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:38:50,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 189 [2023-08-29 20:38:50,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 18 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 20:38:50,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:50,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 189 [2023-08-29 20:38:50,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:50,362 INFO L130 PetriNetUnfolder]: 20/59 cut-off events. [2023-08-29 20:38:50,362 INFO L131 PetriNetUnfolder]: For 68/74 co-relation queries the response was YES. [2023-08-29 20:38:50,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 59 events. 20/59 cut-off events. For 68/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 145 event pairs, 1 based on Foata normal form. 6/64 useless extension candidates. Maximal degree in co-relation 206. Up to 38 conditions per place. [2023-08-29 20:38:50,363 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 14 selfloop transitions, 5 changer transitions 13/34 dead transitions. [2023-08-29 20:38:50,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 223 flow [2023-08-29 20:38:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 20:38:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 20:38:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 526 transitions. [2023-08-29 20:38:50,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638447971781305 [2023-08-29 20:38:50,365 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 526 transitions. [2023-08-29 20:38:50,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 526 transitions. [2023-08-29 20:38:50,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:50,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 526 transitions. [2023-08-29 20:38:50,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.66666666666667) internal successors, (526), 6 states have internal predecessors, (526), 0 states have call successors, (0), 0 states 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 20:38:50,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 20:38:50,368 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states 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 20:38:50,368 INFO L175 Difference]: Start difference. First operand has 38 places, 18 transitions, 85 flow. Second operand 6 states and 526 transitions. [2023-08-29 20:38:50,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 223 flow [2023-08-29 20:38:50,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 218 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 20:38:50,369 INFO L231 Difference]: Finished difference. Result has 42 places, 18 transitions, 104 flow [2023-08-29 20:38:50,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=104, PETRI_PLACES=42, PETRI_TRANSITIONS=18} [2023-08-29 20:38:50,370 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2023-08-29 20:38:50,370 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 18 transitions, 104 flow [2023-08-29 20:38:50,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 20:38:50,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:38:50,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:50,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:38:50,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-29 20:38:50,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:38:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1021234435, now seen corresponding path program 1 times [2023-08-29 20:38:50,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:38:50,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538201401] [2023-08-29 20:38:50,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:38:50,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:38:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:38:50,479 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 20:38:50,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:38:50,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538201401] [2023-08-29 20:38:50,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538201401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:38:50,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:38:50,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:38:50,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073676319] [2023-08-29 20:38:50,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:38:50,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:38:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:38:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:38:50,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:38:50,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 189 [2023-08-29 20:38:50,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 18 transitions, 104 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 20:38:50,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:38:50,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 189 [2023-08-29 20:38:50,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:38:50,521 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-08-29 20:38:50,521 INFO L131 PetriNetUnfolder]: For 61/69 co-relation queries the response was YES. [2023-08-29 20:38:50,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 30 events. 7/30 cut-off events. For 61/69 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 40 event pairs, 0 based on Foata normal form. 5/35 useless extension candidates. Maximal degree in co-relation 116. Up to 15 conditions per place. [2023-08-29 20:38:50,521 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-29 20:38:50,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 23 transitions, 159 flow [2023-08-29 20:38:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 20:38:50,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 20:38:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 596 transitions. [2023-08-29 20:38:50,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504913076341648 [2023-08-29 20:38:50,523 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 596 transitions. [2023-08-29 20:38:50,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 596 transitions. [2023-08-29 20:38:50,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:38:50,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 596 transitions. [2023-08-29 20:38:50,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.14285714285714) internal successors, (596), 7 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 20:38:50,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 20:38:50,526 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states 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 20:38:50,526 INFO L175 Difference]: Start difference. First operand has 42 places, 18 transitions, 104 flow. Second operand 7 states and 596 transitions. [2023-08-29 20:38:50,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 23 transitions, 159 flow [2023-08-29 20:38:50,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 23 transitions, 127 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-08-29 20:38:50,527 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-29 20:38:50,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-29 20:38:50,528 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2023-08-29 20:38:50,528 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-29 20:38:50,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 0 states have call successors, (0), 0 states 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 20:38:50,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-29 20:38:50,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-29 20:38:50,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-29 20:38:50,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-29 20:38:50,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:38:50,532 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:38:50,534 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 20:38:50,534 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 20:38:50,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:38:50 BasicIcfg [2023-08-29 20:38:50,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 20:38:50,536 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 20:38:50,536 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 20:38:50,536 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 20:38:50,537 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:38:44" (3/4) ... [2023-08-29 20:38:50,538 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 20:38:50,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-29 20:38:50,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-29 20:38:50,542 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-29 20:38:50,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-29 20:38:50,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 20:38:50,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 20:38:50,546 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 20:38:50,570 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 20:38:50,570 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 20:38:50,570 INFO L158 Benchmark]: Toolchain (without parser) took 6553.60ms. Allocated memory was 62.9MB in the beginning and 182.5MB in the end (delta: 119.5MB). Free memory was 38.5MB in the beginning and 59.5MB in the end (delta: -21.0MB). Peak memory consumption was 100.6MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,570 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 48.2MB. Free memory was 25.9MB in the beginning and 25.9MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:38:50,571 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.31ms. Allocated memory is still 62.9MB. Free memory was 38.3MB in the beginning and 33.7MB in the end (delta: 4.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,571 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.42ms. Allocated memory is still 62.9MB. Free memory was 33.7MB in the beginning and 31.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,571 INFO L158 Benchmark]: Boogie Preprocessor took 15.11ms. Allocated memory is still 62.9MB. Free memory was 31.5MB in the beginning and 30.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,571 INFO L158 Benchmark]: RCFGBuilder took 364.04ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 29.9MB in the beginning and 44.0MB in the end (delta: -14.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,572 INFO L158 Benchmark]: TraceAbstraction took 5699.95ms. Allocated memory was 75.5MB in the beginning and 182.5MB in the end (delta: 107.0MB). Free memory was 43.3MB in the beginning and 61.6MB in the end (delta: -18.4MB). Peak memory consumption was 87.6MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,572 INFO L158 Benchmark]: Witness Printer took 33.62ms. Allocated memory is still 182.5MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 20:38:50,573 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 48.2MB. Free memory was 25.9MB in the beginning and 25.9MB in the end (delta: 33.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.31ms. Allocated memory is still 62.9MB. Free memory was 38.3MB in the beginning and 33.7MB in the end (delta: 4.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.42ms. Allocated memory is still 62.9MB. Free memory was 33.7MB in the beginning and 31.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.11ms. Allocated memory is still 62.9MB. Free memory was 31.5MB in the beginning and 30.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 364.04ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 29.9MB in the beginning and 44.0MB in the end (delta: -14.1MB). Peak memory consumption was 5.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5699.95ms. Allocated memory was 75.5MB in the beginning and 182.5MB in the end (delta: 107.0MB). Free memory was 43.3MB in the beginning and 61.6MB in the end (delta: -18.4MB). Peak memory consumption was 87.6MB. Max. memory is 16.1GB. * Witness Printer took 33.62ms. Allocated memory is still 182.5MB. Free memory was 61.6MB in the beginning and 59.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 94 PlacesBefore, 33 PlacesAfterwards, 86 TransitionsBefore, 24 TransitionsAfterwards, 1434 CoEnabledTransitionPairs, 7 FixpointIterations, 30 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 96 TotalNumberOfCompositions, 2976 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1912, independent: 1808, independent conditional: 0, independent unconditional: 1808, dependent: 104, dependent conditional: 0, dependent unconditional: 104, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 840, independent: 810, independent conditional: 0, independent unconditional: 810, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1912, independent: 998, independent conditional: 0, independent unconditional: 998, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 840, unknown conditional: 0, unknown unconditional: 840] , Statistics on independence cache: Total cache size (in pairs): 66, Positive cache size: 56, Positive conditional cache size: 0, Positive unconditional cache size: 56, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 771]: 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, 115 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: 5.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 610 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 403 mSDsluCounter, 148 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 104 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1437 IncrementalHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 44 mSDtfsCounter, 1437 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284occurred in iteration=6, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 1169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 20:38:50,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE