./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.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 ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:36:44,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:36:44,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:36:44,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:36:44,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:36:44,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:36:44,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:36:44,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:36:44,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:36:44,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:36:44,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:36:44,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:36:44,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:36:44,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:36:44,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:36:44,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:36:44,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:36:44,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:36:44,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:36:44,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:36:44,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:36:44,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:36:44,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:36:44,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:36:44,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:36:44,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:36:44,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:36:44,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:36:44,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:36:44,678 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:36:44,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:36:44,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:36:44,686 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:36:44,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:36:44,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:36:44,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:36:44,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:36:44,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:36:44,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:36:44,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:36:44,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:36:44,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:36:44,722 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:36:44,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:36:44,724 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:36:44,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:36:44,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:36:44,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:36:44,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:36:44,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:36:44,726 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:36:44,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:36:44,727 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:36:44,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:36:44,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:36:44,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:36:44,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:36:44,728 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:36:44,728 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:36:44,728 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:36:44,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:36:44,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:36:44,730 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:36:44,734 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:36:44,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:36:44,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:36:44,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:36:44,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:36:44,735 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:36:44,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:36:44,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:36:44,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:36:44,735 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:36:44,736 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:36:44,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:36:44,736 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:36:44,736 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:36:45,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:36:45,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:36:45,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:36:45,031 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:36:45,031 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:36:45,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2023-08-31 23:36:46,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:36:46,512 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:36:46,513 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2023-08-31 23:36:46,529 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91399678/2afee3a863734cd9b30166c2e91fec84/FLAG3a7c921a9 [2023-08-31 23:36:46,540 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91399678/2afee3a863734cd9b30166c2e91fec84 [2023-08-31 23:36:46,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:36:46,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:36:46,544 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:36:46,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:36:46,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:36:46,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:36:46" (1/1) ... [2023-08-31 23:36:46,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5064a5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:46, skipping insertion in model container [2023-08-31 23:36:46,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:36:46" (1/1) ... [2023-08-31 23:36:46,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:36:46,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:36:46,770 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i[993,1006] [2023-08-31 23:36:46,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:36:46,954 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:36:46,970 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i[993,1006] [2023-08-31 23:36:47,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:36:47,095 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:36:47,095 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:36:47,101 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:36:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47 WrapperNode [2023-08-31 23:36:47,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:36:47,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:36:47,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:36:47,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:36:47,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,178 INFO L138 Inliner]: procedures = 177, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 188 [2023-08-31 23:36:47,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:36:47,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:36:47,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:36:47,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:36:47,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,233 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:36:47,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:36:47,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:36:47,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:36:47,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (1/1) ... [2023-08-31 23:36:47,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:36:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:36:47,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:36:47,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:36:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 23:36:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:36:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:36:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:36:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:36:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-31 23:36:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-31 23:36:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:36:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:36:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:36:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:36:47,300 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:36:47,489 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:36:47,490 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:36:47,981 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:36:48,528 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:36:48,528 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:36:48,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:36:48 BoogieIcfgContainer [2023-08-31 23:36:48,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:36:48,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:36:48,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:36:48,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:36:48,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:36:46" (1/3) ... [2023-08-31 23:36:48,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfd4572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:36:48, skipping insertion in model container [2023-08-31 23:36:48,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:36:47" (2/3) ... [2023-08-31 23:36:48,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dfd4572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:36:48, skipping insertion in model container [2023-08-31 23:36:48,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:36:48" (3/3) ... [2023-08-31 23:36:48,537 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2023-08-31 23:36:48,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:36:48,562 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-08-31 23:36:48,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:36:48,680 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:36:48,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 412 flow [2023-08-31 23:36:48,844 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-31 23:36:48,845 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:36:48,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 291 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-08-31 23:36:48,850 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 412 flow [2023-08-31 23:36:48,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 396 flow [2023-08-31 23:36:48,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:36:48,883 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 396 flow [2023-08-31 23:36:48,887 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 396 flow [2023-08-31 23:36:48,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 396 flow [2023-08-31 23:36:48,959 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-31 23:36:48,959 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:36:48,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 294 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-08-31 23:36:48,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 8020 [2023-08-31 23:37:12,920 INFO L134 LiptonReduction]: Checked pairs total: 39374 [2023-08-31 23:37:12,921 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-31 23:37:12,932 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:37:12,937 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;@52be7d13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:37:12,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-08-31 23:37:12,939 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:37:12,940 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:37:12,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:12,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:37:12,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:12,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1093, now seen corresponding path program 1 times [2023-08-31 23:37:12,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:12,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611544151] [2023-08-31 23:37:12,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:12,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:13,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611544151] [2023-08-31 23:37:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611544151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:13,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:13,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:37:13,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706036295] [2023-08-31 23:37:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:13,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:37:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:37:13,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:37:13,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 353 [2023-08-31 23:37:13,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:13,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:13,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 353 [2023-08-31 23:37:13,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:23,783 INFO L130 PetriNetUnfolder]: 69742/91810 cut-off events. [2023-08-31 23:37:23,783 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-31 23:37:23,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183861 conditions, 91810 events. 69742/91810 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6115. Compared 600215 event pairs, 69742 based on Foata normal form. 0/47016 useless extension candidates. Maximal degree in co-relation 183849. Up to 91764 conditions per place. [2023-08-31 23:37:24,349 INFO L137 encePairwiseOnDemand]: 324/353 looper letters, 50 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2023-08-31 23:37:24,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 220 flow [2023-08-31 23:37:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:37:24,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:37:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 371 transitions. [2023-08-31 23:37:24,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254957507082153 [2023-08-31 23:37:24,368 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 371 transitions. [2023-08-31 23:37:24,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 371 transitions. [2023-08-31 23:37:24,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:24,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 371 transitions. [2023-08-31 23:37:24,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:24,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:24,382 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:24,589 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 180 flow. Second operand 2 states and 371 transitions. [2023-08-31 23:37:24,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 220 flow [2023-08-31 23:37:24,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:37:24,611 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 116 flow [2023-08-31 23:37:24,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-31 23:37:24,616 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -32 predicate places. [2023-08-31 23:37:24,616 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 116 flow [2023-08-31 23:37:24,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:24,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:24,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:37:24,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:37:24,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:24,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1078472, now seen corresponding path program 1 times [2023-08-31 23:37:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:24,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560823882] [2023-08-31 23:37:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:24,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:24,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:24,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560823882] [2023-08-31 23:37:24,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560823882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:24,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:24,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:37:24,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828289282] [2023-08-31 23:37:24,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:37:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:37:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:37:25,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 353 [2023-08-31 23:37:25,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:25,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:25,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 353 [2023-08-31 23:37:25,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:32,942 INFO L130 PetriNetUnfolder]: 56869/77314 cut-off events. [2023-08-31 23:37:32,942 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:37:33,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154444 conditions, 77314 events. 56869/77314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3450. Compared 495237 event pairs, 34094 based on Foata normal form. 0/49293 useless extension candidates. Maximal degree in co-relation 154441. Up to 45237 conditions per place. [2023-08-31 23:37:33,311 INFO L137 encePairwiseOnDemand]: 332/353 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-08-31 23:37:33,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 292 flow [2023-08-31 23:37:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:37:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:37:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-31 23:37:33,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636449480642115 [2023-08-31 23:37:33,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-31 23:37:33,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-31 23:37:33,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:33,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-31 23:37:33,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:33,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:33,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:33,319 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 116 flow. Second operand 3 states and 491 transitions. [2023-08-31 23:37:33,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 292 flow [2023-08-31 23:37:33,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:37:33,322 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 204 flow [2023-08-31 23:37:33,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-31 23:37:33,323 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2023-08-31 23:37:33,323 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 204 flow [2023-08-31 23:37:33,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:33,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:33,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:37:33,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:37:33,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:33,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:33,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1078473, now seen corresponding path program 1 times [2023-08-31 23:37:33,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:33,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438078466] [2023-08-31 23:37:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:33,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:33,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:33,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:33,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438078466] [2023-08-31 23:37:33,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438078466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:33,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:33,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:37:33,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354644557] [2023-08-31 23:37:33,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:33,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:37:33,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:33,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:37:33,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:37:33,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-31 23:37:33,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:33,470 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:33,470 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-31 23:37:33,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:36,066 INFO L130 PetriNetUnfolder]: 18651/26495 cut-off events. [2023-08-31 23:37:36,066 INFO L131 PetriNetUnfolder]: For 7466/7643 co-relation queries the response was YES. [2023-08-31 23:37:36,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71790 conditions, 26495 events. 18651/26495 cut-off events. For 7466/7643 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 167836 event pairs, 14370 based on Foata normal form. 6147/29746 useless extension candidates. Maximal degree in co-relation 71785. Up to 25102 conditions per place. [2023-08-31 23:37:36,208 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 45 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-31 23:37:36,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 276 flow [2023-08-31 23:37:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:37:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:37:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-31 23:37:36,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45042492917847027 [2023-08-31 23:37:36,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-31 23:37:36,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-31 23:37:36,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:36,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-31 23:37:36,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:36,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:36,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:36,215 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 204 flow. Second operand 3 states and 477 transitions. [2023-08-31 23:37:36,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 276 flow [2023-08-31 23:37:36,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:37:36,270 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 164 flow [2023-08-31 23:37:36,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-31 23:37:36,270 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -41 predicate places. [2023-08-31 23:37:36,271 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 164 flow [2023-08-31 23:37:36,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:36,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:36,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:36,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:37:36,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:36,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash 936182227, now seen corresponding path program 1 times [2023-08-31 23:37:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:36,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008358249] [2023-08-31 23:37:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008358249] [2023-08-31 23:37:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008358249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:37:36,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044994550] [2023-08-31 23:37:36,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:37:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:37:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:37:36,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 353 [2023-08-31 23:37:36,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:36,432 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:36,432 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 353 [2023-08-31 23:37:36,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:38,458 INFO L130 PetriNetUnfolder]: 18282/26770 cut-off events. [2023-08-31 23:37:38,459 INFO L131 PetriNetUnfolder]: For 2915/3080 co-relation queries the response was YES. [2023-08-31 23:37:38,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66152 conditions, 26770 events. 18282/26770 cut-off events. For 2915/3080 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 180713 event pairs, 7361 based on Foata normal form. 0/21403 useless extension candidates. Maximal degree in co-relation 66147. Up to 15275 conditions per place. [2023-08-31 23:37:38,565 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 81 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-31 23:37:38,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 454 flow [2023-08-31 23:37:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:37:38,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:37:38,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-31 23:37:38,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47780925401322 [2023-08-31 23:37:38,569 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-31 23:37:38,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-31 23:37:38,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:38,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-31 23:37:38,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:38,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:38,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:38,573 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 164 flow. Second operand 3 states and 506 transitions. [2023-08-31 23:37:38,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 454 flow [2023-08-31 23:37:38,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:37:38,576 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 176 flow [2023-08-31 23:37:38,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-08-31 23:37:38,577 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -39 predicate places. [2023-08-31 23:37:38,577 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 176 flow [2023-08-31 23:37:38,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:38,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:38,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:38,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:37:38,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:38,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash 936182570, now seen corresponding path program 1 times [2023-08-31 23:37:38,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812655223] [2023-08-31 23:37:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812655223] [2023-08-31 23:37:38,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812655223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:38,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:38,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:37:38,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037316871] [2023-08-31 23:37:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:37:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:38,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:37:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:37:38,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 353 [2023-08-31 23:37:38,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:38,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:38,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 353 [2023-08-31 23:37:38,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:41,544 INFO L130 PetriNetUnfolder]: 24605/34041 cut-off events. [2023-08-31 23:37:41,544 INFO L131 PetriNetUnfolder]: For 11065/11417 co-relation queries the response was YES. [2023-08-31 23:37:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89300 conditions, 34041 events. 24605/34041 cut-off events. For 11065/11417 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 212887 event pairs, 8369 based on Foata normal form. 50/28373 useless extension candidates. Maximal degree in co-relation 89294. Up to 30725 conditions per place. [2023-08-31 23:37:41,663 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 82 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-31 23:37:41,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 484 flow [2023-08-31 23:37:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:37:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:37:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-31 23:37:41,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749763928234183 [2023-08-31 23:37:41,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-31 23:37:41,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-31 23:37:41,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:41,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-31 23:37:41,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:41,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:41,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:41,670 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 176 flow. Second operand 3 states and 503 transitions. [2023-08-31 23:37:41,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 484 flow [2023-08-31 23:37:41,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:37:41,674 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 202 flow [2023-08-31 23:37:41,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-31 23:37:41,675 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -38 predicate places. [2023-08-31 23:37:41,675 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 202 flow [2023-08-31 23:37:41,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:41,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:41,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:41,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:37:41,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:41,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1043112349, now seen corresponding path program 1 times [2023-08-31 23:37:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:41,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956335564] [2023-08-31 23:37:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:41,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:41,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:41,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:41,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956335564] [2023-08-31 23:37:41,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956335564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:41,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:41,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:37:41,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403466258] [2023-08-31 23:37:41,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:41,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:37:41,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:37:41,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:37:41,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 353 [2023-08-31 23:37:41,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:41,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:41,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 353 [2023-08-31 23:37:41,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:44,393 INFO L130 PetriNetUnfolder]: 24461/33826 cut-off events. [2023-08-31 23:37:44,393 INFO L131 PetriNetUnfolder]: For 15431/16060 co-relation queries the response was YES. [2023-08-31 23:37:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93911 conditions, 33826 events. 24461/33826 cut-off events. For 15431/16060 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 217195 event pairs, 3816 based on Foata normal form. 286/28742 useless extension candidates. Maximal degree in co-relation 93904. Up to 29097 conditions per place. [2023-08-31 23:37:44,563 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 86 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-31 23:37:44,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 516 flow [2023-08-31 23:37:44,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:37:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:37:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-31 23:37:44,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721435316336166 [2023-08-31 23:37:44,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-31 23:37:44,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-31 23:37:44,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:44,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-31 23:37:44,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:44,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:44,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:44,569 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 202 flow. Second operand 3 states and 500 transitions. [2023-08-31 23:37:44,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 516 flow [2023-08-31 23:37:44,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:37:44,576 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 222 flow [2023-08-31 23:37:44,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-31 23:37:44,577 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -36 predicate places. [2023-08-31 23:37:44,577 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 222 flow [2023-08-31 23:37:44,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:44,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:44,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:44,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:37:44,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:44,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:44,578 INFO L85 PathProgramCache]: Analyzing trace with hash -723225260, now seen corresponding path program 1 times [2023-08-31 23:37:44,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:44,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514250381] [2023-08-31 23:37:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:44,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:44,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514250381] [2023-08-31 23:37:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514250381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:44,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:44,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:37:44,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756901756] [2023-08-31 23:37:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:44,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:37:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:44,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:37:44,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:37:44,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 353 [2023-08-31 23:37:44,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:44,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:44,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 353 [2023-08-31 23:37:44,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:47,091 INFO L130 PetriNetUnfolder]: 21552/30562 cut-off events. [2023-08-31 23:37:47,092 INFO L131 PetriNetUnfolder]: For 14892/15135 co-relation queries the response was YES. [2023-08-31 23:37:47,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88679 conditions, 30562 events. 21552/30562 cut-off events. For 14892/15135 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 195244 event pairs, 10261 based on Foata normal form. 0/25619 useless extension candidates. Maximal degree in co-relation 88671. Up to 19323 conditions per place. [2023-08-31 23:37:47,276 INFO L137 encePairwiseOnDemand]: 351/353 looper letters, 82 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-31 23:37:47,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 514 flow [2023-08-31 23:37:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:37:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:37:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-31 23:37:47,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45042492917847027 [2023-08-31 23:37:47,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-31 23:37:47,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-31 23:37:47,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:47,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-31 23:37:47,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:47,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:47,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:47,282 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 222 flow. Second operand 3 states and 477 transitions. [2023-08-31 23:37:47,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 91 transitions, 514 flow [2023-08-31 23:37:47,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:37:47,294 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 222 flow [2023-08-31 23:37:47,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-31 23:37:47,295 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -36 predicate places. [2023-08-31 23:37:47,295 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 222 flow [2023-08-31 23:37:47,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:47,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:47,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:37:47,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:47,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:47,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1043112691, now seen corresponding path program 1 times [2023-08-31 23:37:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:47,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555640388] [2023-08-31 23:37:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555640388] [2023-08-31 23:37:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555640388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:47,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:37:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521614650] [2023-08-31 23:37:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:47,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:37:47,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:37:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:37:47,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 353 [2023-08-31 23:37:47,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 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) [2023-08-31 23:37:47,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:47,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 353 [2023-08-31 23:37:47,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:51,571 INFO L130 PetriNetUnfolder]: 32190/45776 cut-off events. [2023-08-31 23:37:51,571 INFO L131 PetriNetUnfolder]: For 25041/25396 co-relation queries the response was YES. [2023-08-31 23:37:51,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129385 conditions, 45776 events. 32190/45776 cut-off events. For 25041/25396 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 308627 event pairs, 16897 based on Foata normal form. 155/38340 useless extension candidates. Maximal degree in co-relation 129377. Up to 24319 conditions per place. [2023-08-31 23:37:51,939 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 81 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2023-08-31 23:37:51,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 538 flow [2023-08-31 23:37:51,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:37:51,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:37:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 622 transitions. [2023-08-31 23:37:51,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405099150141643 [2023-08-31 23:37:51,941 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 622 transitions. [2023-08-31 23:37:51,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 622 transitions. [2023-08-31 23:37:51,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:51,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 622 transitions. [2023-08-31 23:37:51,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:51,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:51,946 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:51,946 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 222 flow. Second operand 4 states and 622 transitions. [2023-08-31 23:37:51,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 538 flow [2023-08-31 23:37:51,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:37:51,967 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 255 flow [2023-08-31 23:37:51,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-31 23:37:51,970 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -33 predicate places. [2023-08-31 23:37:51,970 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 255 flow [2023-08-31 23:37:51,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 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) [2023-08-31 23:37:51,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:51,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:37:51,971 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:51,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1561724005, now seen corresponding path program 2 times [2023-08-31 23:37:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:51,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021664429] [2023-08-31 23:37:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:51,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:52,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:52,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021664429] [2023-08-31 23:37:52,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021664429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:52,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:52,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:37:52,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544251857] [2023-08-31 23:37:52,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:52,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:37:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:52,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:37:52,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:37:52,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 353 [2023-08-31 23:37:52,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:52,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:52,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 353 [2023-08-31 23:37:52,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:37:56,597 INFO L130 PetriNetUnfolder]: 31870/45329 cut-off events. [2023-08-31 23:37:56,598 INFO L131 PetriNetUnfolder]: For 30730/31073 co-relation queries the response was YES. [2023-08-31 23:37:56,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130063 conditions, 45329 events. 31870/45329 cut-off events. For 30730/31073 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 305503 event pairs, 17217 based on Foata normal form. 156/37909 useless extension candidates. Maximal degree in co-relation 130054. Up to 33358 conditions per place. [2023-08-31 23:37:56,851 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 82 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-31 23:37:56,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 549 flow [2023-08-31 23:37:56,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:37:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:37:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-08-31 23:37:56,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44192634560906513 [2023-08-31 23:37:56,853 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-08-31 23:37:56,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-08-31 23:37:56,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:37:56,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-08-31 23:37:56,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:56,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:56,857 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:56,857 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 255 flow. Second operand 4 states and 624 transitions. [2023-08-31 23:37:56,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 549 flow [2023-08-31 23:37:56,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 535 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:37:56,878 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 245 flow [2023-08-31 23:37:56,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-31 23:37:56,879 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -34 predicate places. [2023-08-31 23:37:56,879 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 245 flow [2023-08-31 23:37:56,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:56,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:37:56,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:37:56,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:37:56,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:37:56,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:37:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1832137713, now seen corresponding path program 1 times [2023-08-31 23:37:56,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:37:56,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100959723] [2023-08-31 23:37:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:37:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:37:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:37:58,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:37:58,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:37:58,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100959723] [2023-08-31 23:37:58,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100959723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:37:58,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:37:58,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 23:37:58,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252245409] [2023-08-31 23:37:58,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:37:58,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 23:37:58,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:37:58,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 23:37:58,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-31 23:37:58,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-31 23:37:58,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 121.875) internal successors, (975), 8 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:37:58,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:37:58,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-31 23:37:58,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:02,986 INFO L130 PetriNetUnfolder]: 32615/45872 cut-off events. [2023-08-31 23:38:02,986 INFO L131 PetriNetUnfolder]: For 29268/29268 co-relation queries the response was YES. [2023-08-31 23:38:03,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133577 conditions, 45872 events. 32615/45872 cut-off events. For 29268/29268 co-relation queries the response was YES. Maximal size of possible extension queue 2338. Compared 297074 event pairs, 19960 based on Foata normal form. 2/38739 useless extension candidates. Maximal degree in co-relation 133569. Up to 45266 conditions per place. [2023-08-31 23:38:03,450 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 77 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2023-08-31 23:38:03,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 698 flow [2023-08-31 23:38:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:38:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:38:03,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions. [2023-08-31 23:38:03,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693342776203966 [2023-08-31 23:38:03,453 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions. [2023-08-31 23:38:03,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions. [2023-08-31 23:38:03,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:03,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions. [2023-08-31 23:38:03,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:03,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:03,460 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:03,460 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 245 flow. Second operand 8 states and 1043 transitions. [2023-08-31 23:38:03,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 698 flow [2023-08-31 23:38:03,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:38:03,473 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 487 flow [2023-08-31 23:38:03,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-31 23:38:03,474 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -25 predicate places. [2023-08-31 23:38:03,474 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 487 flow [2023-08-31 23:38:03,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.875) internal successors, (975), 8 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:03,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:03,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:03,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:38:03,475 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:03,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:03,475 INFO L85 PathProgramCache]: Analyzing trace with hash 997504222, now seen corresponding path program 1 times [2023-08-31 23:38:03,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:03,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361921124] [2023-08-31 23:38:03,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:03,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:03,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:03,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361921124] [2023-08-31 23:38:03,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361921124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:03,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:03,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:38:03,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351189684] [2023-08-31 23:38:03,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:03,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:38:03,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:03,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:38:03,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:38:03,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-31 23:38:03,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:03,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:03,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-31 23:38:03,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:09,324 INFO L130 PetriNetUnfolder]: 46346/65257 cut-off events. [2023-08-31 23:38:09,324 INFO L131 PetriNetUnfolder]: For 49271/49910 co-relation queries the response was YES. [2023-08-31 23:38:09,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194562 conditions, 65257 events. 46346/65257 cut-off events. For 49271/49910 co-relation queries the response was YES. Maximal size of possible extension queue 3130. Compared 453336 event pairs, 17696 based on Foata normal form. 334/56158 useless extension candidates. Maximal degree in co-relation 194550. Up to 38251 conditions per place. [2023-08-31 23:38:09,702 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 112 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-08-31 23:38:09,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 867 flow [2023-08-31 23:38:09,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:38:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:38:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-31 23:38:09,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702549575070821 [2023-08-31 23:38:09,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-31 23:38:09,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-31 23:38:09,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:09,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-31 23:38:09,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:09,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:09,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:09,707 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 487 flow. Second operand 3 states and 498 transitions. [2023-08-31 23:38:09,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 867 flow [2023-08-31 23:38:09,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 845 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-31 23:38:09,964 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 476 flow [2023-08-31 23:38:09,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2023-08-31 23:38:09,965 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -22 predicate places. [2023-08-31 23:38:09,965 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 476 flow [2023-08-31 23:38:09,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:09,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:09,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:38:09,966 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:09,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash -785422482, now seen corresponding path program 1 times [2023-08-31 23:38:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:09,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607505535] [2023-08-31 23:38:09,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:09,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:11,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:11,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607505535] [2023-08-31 23:38:11,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607505535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:11,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:11,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:38:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547498305] [2023-08-31 23:38:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:11,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:38:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:38:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:38:11,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 353 [2023-08-31 23:38:11,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:11,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:11,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 353 [2023-08-31 23:38:11,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:17,232 INFO L130 PetriNetUnfolder]: 39386/55649 cut-off events. [2023-08-31 23:38:17,232 INFO L131 PetriNetUnfolder]: For 46679/46802 co-relation queries the response was YES. [2023-08-31 23:38:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173139 conditions, 55649 events. 39386/55649 cut-off events. For 46679/46802 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 381358 event pairs, 23514 based on Foata normal form. 47/48271 useless extension candidates. Maximal degree in co-relation 173125. Up to 54678 conditions per place. [2023-08-31 23:38:17,555 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 106 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2023-08-31 23:38:17,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 932 flow [2023-08-31 23:38:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 23:38:17,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 23:38:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1136 transitions. [2023-08-31 23:38:17,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357570034623859 [2023-08-31 23:38:17,559 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1136 transitions. [2023-08-31 23:38:17,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1136 transitions. [2023-08-31 23:38:17,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:17,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1136 transitions. [2023-08-31 23:38:17,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:17,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:17,564 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:17,564 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 476 flow. Second operand 9 states and 1136 transitions. [2023-08-31 23:38:17,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 932 flow [2023-08-31 23:38:17,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 900 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-31 23:38:17,862 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 614 flow [2023-08-31 23:38:17,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=614, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-08-31 23:38:17,863 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -11 predicate places. [2023-08-31 23:38:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 614 flow [2023-08-31 23:38:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:17,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:17,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:38:17,864 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:17,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1197653368, now seen corresponding path program 2 times [2023-08-31 23:38:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139573643] [2023-08-31 23:38:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:19,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:19,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:19,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139573643] [2023-08-31 23:38:19,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139573643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:19,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:19,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:38:19,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229698890] [2023-08-31 23:38:19,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:19,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:38:19,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:19,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:38:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:38:20,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-31 23:38:20,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 614 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:20,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:20,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-31 23:38:20,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:25,867 INFO L130 PetriNetUnfolder]: 39464/55768 cut-off events. [2023-08-31 23:38:25,867 INFO L131 PetriNetUnfolder]: For 45447/45564 co-relation queries the response was YES. [2023-08-31 23:38:26,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174484 conditions, 55768 events. 39464/55768 cut-off events. For 45447/45564 co-relation queries the response was YES. Maximal size of possible extension queue 3020. Compared 380641 event pairs, 16478 based on Foata normal form. 81/48425 useless extension candidates. Maximal degree in co-relation 174466. Up to 53324 conditions per place. [2023-08-31 23:38:26,243 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 114 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2023-08-31 23:38:26,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 182 transitions, 1412 flow [2023-08-31 23:38:26,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-31 23:38:26,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-31 23:38:26,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1552 transitions. [2023-08-31 23:38:26,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663833805476865 [2023-08-31 23:38:26,247 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1552 transitions. [2023-08-31 23:38:26,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1552 transitions. [2023-08-31 23:38:26,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:26,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1552 transitions. [2023-08-31 23:38:26,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.33333333333334) internal successors, (1552), 12 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,256 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,256 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 614 flow. Second operand 12 states and 1552 transitions. [2023-08-31 23:38:26,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 182 transitions, 1412 flow [2023-08-31 23:38:26,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 182 transitions, 1373 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-31 23:38:26,756 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1049 flow [2023-08-31 23:38:26,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1049, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2023-08-31 23:38:26,757 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2023-08-31 23:38:26,757 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1049 flow [2023-08-31 23:38:26,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:26,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:26,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:38:26,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:26,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash -786790497, now seen corresponding path program 1 times [2023-08-31 23:38:26,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:26,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511223529] [2023-08-31 23:38:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:27,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511223529] [2023-08-31 23:38:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511223529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:38:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94856120] [2023-08-31 23:38:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:27,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:38:27,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:38:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:38:28,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-31 23:38:28,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1049 flow. Second operand has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:28,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:28,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-31 23:38:28,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:34,250 INFO L130 PetriNetUnfolder]: 39457/55772 cut-off events. [2023-08-31 23:38:34,250 INFO L131 PetriNetUnfolder]: For 73335/73446 co-relation queries the response was YES. [2023-08-31 23:38:34,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193526 conditions, 55772 events. 39457/55772 cut-off events. For 73335/73446 co-relation queries the response was YES. Maximal size of possible extension queue 3019. Compared 382759 event pairs, 22911 based on Foata normal form. 39/48386 useless extension candidates. Maximal degree in co-relation 193501. Up to 54601 conditions per place. [2023-08-31 23:38:34,641 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 127 selfloop transitions, 44 changer transitions 0/173 dead transitions. [2023-08-31 23:38:34,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 173 transitions, 1687 flow [2023-08-31 23:38:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:38:34,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:38:34,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2023-08-31 23:38:34,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742917847025496 [2023-08-31 23:38:34,644 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2023-08-31 23:38:34,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2023-08-31 23:38:34,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:34,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2023-08-31 23:38:34,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:34,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:34,650 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:34,650 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1049 flow. Second operand 8 states and 1057 transitions. [2023-08-31 23:38:34,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 173 transitions, 1687 flow [2023-08-31 23:38:37,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 173 transitions, 1627 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-31 23:38:37,226 INFO L231 Difference]: Finished difference. Result has 110 places, 146 transitions, 1320 flow [2023-08-31 23:38:37,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1320, PETRI_PLACES=110, PETRI_TRANSITIONS=146} [2023-08-31 23:38:37,226 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 14 predicate places. [2023-08-31 23:38:37,226 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 146 transitions, 1320 flow [2023-08-31 23:38:37,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:37,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:37,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 23:38:37,227 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:37,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1615535047, now seen corresponding path program 1 times [2023-08-31 23:38:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:37,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439105165] [2023-08-31 23:38:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439105165] [2023-08-31 23:38:37,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439105165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:37,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:38:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770984726] [2023-08-31 23:38:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:37,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:38:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:38:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:38:37,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 353 [2023-08-31 23:38:37,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 146 transitions, 1320 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:37,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:37,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 353 [2023-08-31 23:38:37,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:43,796 INFO L130 PetriNetUnfolder]: 38129/54448 cut-off events. [2023-08-31 23:38:43,796 INFO L131 PetriNetUnfolder]: For 86485/86608 co-relation queries the response was YES. [2023-08-31 23:38:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193345 conditions, 54448 events. 38129/54448 cut-off events. For 86485/86608 co-relation queries the response was YES. Maximal size of possible extension queue 3015. Compared 379737 event pairs, 13159 based on Foata normal form. 79/47998 useless extension candidates. Maximal degree in co-relation 193316. Up to 45015 conditions per place. [2023-08-31 23:38:44,229 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 147 selfloop transitions, 20 changer transitions 0/176 dead transitions. [2023-08-31 23:38:44,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 1844 flow [2023-08-31 23:38:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:38:44,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:38:44,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-31 23:38:44,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636449480642115 [2023-08-31 23:38:44,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-31 23:38:44,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-31 23:38:44,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:44,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-31 23:38:44,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:44,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:44,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:44,233 INFO L175 Difference]: Start difference. First operand has 110 places, 146 transitions, 1320 flow. Second operand 3 states and 491 transitions. [2023-08-31 23:38:44,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 1844 flow [2023-08-31 23:38:46,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 176 transitions, 1812 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-31 23:38:46,901 INFO L231 Difference]: Finished difference. Result has 111 places, 146 transitions, 1350 flow [2023-08-31 23:38:46,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1350, PETRI_PLACES=111, PETRI_TRANSITIONS=146} [2023-08-31 23:38:46,901 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2023-08-31 23:38:46,901 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 146 transitions, 1350 flow [2023-08-31 23:38:46,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:46,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:46,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:46,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 23:38:46,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:46,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2023297229, now seen corresponding path program 1 times [2023-08-31 23:38:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136093374] [2023-08-31 23:38:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:46,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:47,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:47,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136093374] [2023-08-31 23:38:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136093374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:38:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620939272] [2023-08-31 23:38:47,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:38:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:38:47,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:38:47,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 353 [2023-08-31 23:38:47,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 146 transitions, 1350 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:47,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:47,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 353 [2023-08-31 23:38:47,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:38:52,631 INFO L130 PetriNetUnfolder]: 34842/49287 cut-off events. [2023-08-31 23:38:52,632 INFO L131 PetriNetUnfolder]: For 90942/91038 co-relation queries the response was YES. [2023-08-31 23:38:52,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181866 conditions, 49287 events. 34842/49287 cut-off events. For 90942/91038 co-relation queries the response was YES. Maximal size of possible extension queue 2750. Compared 330374 event pairs, 9985 based on Foata normal form. 309/43859 useless extension candidates. Maximal degree in co-relation 181835. Up to 22989 conditions per place. [2023-08-31 23:38:52,986 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 136 selfloop transitions, 42 changer transitions 0/180 dead transitions. [2023-08-31 23:38:52,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 180 transitions, 1942 flow [2023-08-31 23:38:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:38:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:38:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2023-08-31 23:38:52,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263456090651558 [2023-08-31 23:38:52,988 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2023-08-31 23:38:52,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2023-08-31 23:38:52,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:38:52,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2023-08-31 23:38:52,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:52,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:52,992 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:52,992 INFO L175 Difference]: Start difference. First operand has 111 places, 146 transitions, 1350 flow. Second operand 4 states and 602 transitions. [2023-08-31 23:38:52,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 180 transitions, 1942 flow [2023-08-31 23:38:55,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 180 transitions, 1892 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 23:38:55,560 INFO L231 Difference]: Finished difference. Result has 114 places, 156 transitions, 1604 flow [2023-08-31 23:38:55,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1604, PETRI_PLACES=114, PETRI_TRANSITIONS=156} [2023-08-31 23:38:55,561 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 18 predicate places. [2023-08-31 23:38:55,561 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 156 transitions, 1604 flow [2023-08-31 23:38:55,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:55,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:38:55,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:38:55,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 23:38:55,562 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-31 23:38:55,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:38:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1938774266, now seen corresponding path program 1 times [2023-08-31 23:38:55,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:38:55,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797502316] [2023-08-31 23:38:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:38:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:38:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:38:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:38:56,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:38:56,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797502316] [2023-08-31 23:38:56,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797502316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:38:56,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:38:56,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 23:38:56,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365473726] [2023-08-31 23:38:56,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:38:56,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-31 23:38:56,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:38:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-31 23:38:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-31 23:38:57,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-31 23:38:57,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 156 transitions, 1604 flow. Second operand has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:38:57,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:38:57,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-31 23:38:57,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:39:03,063 INFO L130 PetriNetUnfolder]: 35958/50777 cut-off events. [2023-08-31 23:39:03,063 INFO L131 PetriNetUnfolder]: For 128772/128871 co-relation queries the response was YES. [2023-08-31 23:39:03,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209581 conditions, 50777 events. 35958/50777 cut-off events. For 128772/128871 co-relation queries the response was YES. Maximal size of possible extension queue 2771. Compared 342051 event pairs, 14348 based on Foata normal form. 39/46584 useless extension candidates. Maximal degree in co-relation 209549. Up to 48493 conditions per place. [2023-08-31 23:39:03,472 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 180 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2023-08-31 23:39:03,472 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 226 transitions, 2530 flow [2023-08-31 23:39:03,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 23:39:03,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 23:39:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1429 transitions. [2023-08-31 23:39:03,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36801442183878447 [2023-08-31 23:39:03,475 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1429 transitions. [2023-08-31 23:39:03,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1429 transitions. [2023-08-31 23:39:03,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:39:03,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1429 transitions. [2023-08-31 23:39:03,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.9090909090909) internal successors, (1429), 11 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:03,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:03,482 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:39:03,482 INFO L175 Difference]: Start difference. First operand has 114 places, 156 transitions, 1604 flow. Second operand 11 states and 1429 transitions. [2023-08-31 23:39:03,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 226 transitions, 2530 flow