./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c --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/weaver/parallel-ticket-5.wvr.c -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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --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 [2023-09-01 02:32:43,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:32:43,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:32:43,591 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:32:43,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:32:43,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:32:43,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:32:43,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:32:43,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:32:43,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:32:43,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:32:43,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:32:43,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:32:43,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:32:43,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:32:43,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:32:43,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:32:43,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:32:43,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:32:43,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:32:43,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:32:43,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:32:43,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:32:43,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:32:43,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:32:43,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:32:43,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:32:43,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:32:43,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:32:43,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:32:43,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:32:43,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:32:43,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:32:43,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:32:43,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:32:43,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:32:43,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:32:43,641 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:32:43,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:32:43,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:32:43,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:32:43,644 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:32:43,662 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:32:43,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:32:43,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:32:43,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:32:43,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:32:43,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:32:43,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:32:43,664 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:32:43,664 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:32:43,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:32:43,665 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:32:43,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:32:43,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:32:43,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:32:43,667 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:32:43,667 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:32:43,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:32:43,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:32:43,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:32:43,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:32:43,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:32:43,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:32:43,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:32:43,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:32:43,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:32:43,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:32:43,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:32:43,669 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:32:43,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:32:43,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:32:43,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:32:43,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:32:43,961 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:32:43,961 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:32:43,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-09-01 02:32:44,932 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:32:45,128 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:32:45,129 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c [2023-09-01 02:32:45,135 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/773e02a1d/7f182e71c5f84c2eb52343461d755029/FLAG16fb65b6c [2023-09-01 02:32:45,144 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/773e02a1d/7f182e71c5f84c2eb52343461d755029 [2023-09-01 02:32:45,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:32:45,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:32:45,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:32:45,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:32:45,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:32:45,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d55a9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45, skipping insertion in model container [2023-09-01 02:32:45,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:32:45,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:32:45,280 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c[3963,3976] [2023-09-01 02:32:45,290 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:32:45,300 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:32:45,336 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-5.wvr.c[3963,3976] [2023-09-01 02:32:45,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:32:45,349 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:32:45,351 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:32:45,355 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:32:45,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45 WrapperNode [2023-09-01 02:32:45,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:32:45,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:32:45,357 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:32:45,357 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:32:45,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,378 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,406 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 247 [2023-09-01 02:32:45,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:32:45,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:32:45,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:32:45,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:32:45,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,431 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:32:45,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:32:45,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:32:45,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:32:45,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (1/1) ... [2023-09-01 02:32:45,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:32:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:32:45,457 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) [2023-09-01 02:32:45,478 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 [2023-09-01 02:32:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:32:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:32:45,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:32:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:32:45,522 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:32:45,522 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:32:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:32:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 02:32:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 02:32:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:32:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-09-01 02:32:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-09-01 02:32:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:32:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:32:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:32:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:32:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:32:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:32:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:32:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:32:45,526 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:32:45,664 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:32:45,666 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:32:45,962 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:32:46,012 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:32:46,012 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 02:32:46,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:46 BoogieIcfgContainer [2023-09-01 02:32:46,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:32:46,015 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:32:46,015 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:32:46,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:32:46,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:32:45" (1/3) ... [2023-09-01 02:32:46,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac6af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:32:46, skipping insertion in model container [2023-09-01 02:32:46,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:45" (2/3) ... [2023-09-01 02:32:46,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac6af4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:32:46, skipping insertion in model container [2023-09-01 02:32:46,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:46" (3/3) ... [2023-09-01 02:32:46,019 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2023-09-01 02:32:46,038 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:32:46,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-09-01 02:32:46,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:32:46,123 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 02:32:46,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 191 transitions, 422 flow [2023-09-01 02:32:46,249 INFO L130 PetriNetUnfolder]: 2/186 cut-off events. [2023-09-01 02:32:46,251 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 02:32:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 186 events. 2/186 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 138 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-09-01 02:32:46,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 191 transitions, 422 flow [2023-09-01 02:32:46,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 182 transitions, 394 flow [2023-09-01 02:32:46,265 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:32:46,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 196 places, 182 transitions, 394 flow [2023-09-01 02:32:46,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 196 places, 182 transitions, 394 flow [2023-09-01 02:32:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 182 transitions, 394 flow [2023-09-01 02:32:46,313 INFO L130 PetriNetUnfolder]: 2/182 cut-off events. [2023-09-01 02:32:46,313 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 02:32:46,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 182 events. 2/182 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 137 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-09-01 02:32:46,316 INFO L119 LiptonReduction]: Number of co-enabled transitions 2702 [2023-09-01 02:32:52,392 INFO L134 LiptonReduction]: Checked pairs total: 13945 [2023-09-01 02:32:52,392 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-09-01 02:32:52,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:32:52,406 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;@549e20fd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:32:52,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-09-01 02:32:52,407 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 02:32:52,407 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:32:52,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:52,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:32:52,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:32:52,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash 744, now seen corresponding path program 1 times [2023-09-01 02:32:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:52,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629344286] [2023-09-01 02:32:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:52,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:52,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:52,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:52,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629344286] [2023-09-01 02:32:52,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629344286] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:52,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:52,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:32:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267723554] [2023-09-01 02:32:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:52,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:32:52,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:32:52,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:32:52,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 349 [2023-09-01 02:32:52,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 156 flow. Second operand has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:52,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 349 [2023-09-01 02:32:52,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:54,379 INFO L130 PetriNetUnfolder]: 21849/30052 cut-off events. [2023-09-01 02:32:54,380 INFO L131 PetriNetUnfolder]: For 783/783 co-relation queries the response was YES. [2023-09-01 02:32:54,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59750 conditions, 30052 events. 21849/30052 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 182387 event pairs, 21849 based on Foata normal form. 0/26507 useless extension candidates. Maximal degree in co-relation 49160. Up to 28669 conditions per place. [2023-09-01 02:32:54,582 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 54 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-09-01 02:32:54,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 60 transitions, 258 flow [2023-09-01 02:32:54,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:32:54,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:32:54,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 383 transitions. [2023-09-01 02:32:54,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5487106017191977 [2023-09-01 02:32:54,599 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 383 transitions. [2023-09-01 02:32:54,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 383 transitions. [2023-09-01 02:32:54,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:54,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 383 transitions. [2023-09-01 02:32:54,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,609 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 349.0) internal successors, (1047), 3 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,610 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 156 flow. Second operand 2 states and 383 transitions. [2023-09-01 02:32:54,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 60 transitions, 258 flow [2023-09-01 02:32:54,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 238 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-09-01 02:32:54,654 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 130 flow [2023-09-01 02:32:54,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-09-01 02:32:54,658 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2023-09-01 02:32:54,659 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 130 flow [2023-09-01 02:32:54,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 163.5) internal successors, (327), 2 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:54,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:32:54,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:32:54,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:32:54,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash 734444, now seen corresponding path program 1 times [2023-09-01 02:32:54,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:54,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364631726] [2023-09-01 02:32:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:54,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:54,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364631726] [2023-09-01 02:32:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364631726] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:55,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106977553] [2023-09-01 02:32:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:55,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:55,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 349 [2023-09-01 02:32:55,076 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 130 flow. Second operand has 3 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) [2023-09-01 02:32:55,076 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:55,076 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 349 [2023-09-01 02:32:55,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:56,424 INFO L130 PetriNetUnfolder]: 21078/29019 cut-off events. [2023-09-01 02:32:56,424 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:32:56,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57000 conditions, 29019 events. 21078/29019 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 175653 event pairs, 21078 based on Foata normal form. 0/25734 useless extension candidates. Maximal degree in co-relation 56997. Up to 27637 conditions per place. [2023-09-01 02:32:56,544 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-09-01 02:32:56,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 230 flow [2023-09-01 02:32:56,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:56,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 528 transitions. [2023-09-01 02:32:56,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504297994269341 [2023-09-01 02:32:56,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 528 transitions. [2023-09-01 02:32:56,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 528 transitions. [2023-09-01 02:32:56,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:56,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 528 transitions. [2023-09-01 02:32:56,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,550 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 130 flow. Second operand 3 states and 528 transitions. [2023-09-01 02:32:56,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 230 flow [2023-09-01 02:32:56,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:32:56,552 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 128 flow [2023-09-01 02:32:56,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-09-01 02:32:56,553 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2023-09-01 02:32:56,553 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 128 flow [2023-09-01 02:32:56,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-09-01 02:32:56,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:56,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:32:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:32:56,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:32:56,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash 734446, now seen corresponding path program 1 times [2023-09-01 02:32:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:56,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093531001] [2023-09-01 02:32:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:56,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:56,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093531001] [2023-09-01 02:32:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093531001] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:56,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:56,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:56,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585290646] [2023-09-01 02:32:56,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:56,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:56,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:56,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 349 [2023-09-01 02:32:56,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:56,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 349 [2023-09-01 02:32:56,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:57,934 INFO L130 PetriNetUnfolder]: 20307/27986 cut-off events. [2023-09-01 02:32:57,934 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:32:57,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54938 conditions, 27986 events. 20307/27986 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 169487 event pairs, 20307 based on Foata normal form. 0/24961 useless extension candidates. Maximal degree in co-relation 54934. Up to 26606 conditions per place. [2023-09-01 02:32:58,033 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 49 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2023-09-01 02:32:58,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 224 flow [2023-09-01 02:32:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:58,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2023-09-01 02:32:58,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48233046800382046 [2023-09-01 02:32:58,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2023-09-01 02:32:58,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2023-09-01 02:32:58,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:58,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2023-09-01 02:32:58,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:58,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:58,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:58,039 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 128 flow. Second operand 3 states and 505 transitions. [2023-09-01 02:32:58,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 224 flow [2023-09-01 02:32:58,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:58,040 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 125 flow [2023-09-01 02:32:58,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-09-01 02:32:58,041 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -13 predicate places. [2023-09-01 02:32:58,041 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 125 flow [2023-09-01 02:32:58,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:58,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:58,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:32:58,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:32:58,042 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:32:58,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:58,042 INFO L85 PathProgramCache]: Analyzing trace with hash 705819381, now seen corresponding path program 1 times [2023-09-01 02:32:58,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:58,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358625829] [2023-09-01 02:32:58,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:58,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:58,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:58,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:58,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358625829] [2023-09-01 02:32:58,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358625829] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:58,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:58,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:58,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26498566] [2023-09-01 02:32:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:58,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:58,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:58,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:58,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:58,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 349 [2023-09-01 02:32:58,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:58,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:58,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 349 [2023-09-01 02:32:58,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:59,247 INFO L130 PetriNetUnfolder]: 20139/27734 cut-off events. [2023-09-01 02:32:59,247 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:32:59,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54439 conditions, 27734 events. 20139/27734 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 168061 event pairs, 20139 based on Foata normal form. 0/24790 useless extension candidates. Maximal degree in co-relation 54435. Up to 26358 conditions per place. [2023-09-01 02:32:59,366 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 47 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-09-01 02:32:59,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 217 flow [2023-09-01 02:32:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-09-01 02:32:59,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804202483285578 [2023-09-01 02:32:59,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-09-01 02:32:59,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-09-01 02:32:59,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:59,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-09-01 02:32:59,380 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) [2023-09-01 02:32:59,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,383 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 125 flow. Second operand 3 states and 503 transitions. [2023-09-01 02:32:59,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 217 flow [2023-09-01 02:32:59,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:59,385 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 122 flow [2023-09-01 02:32:59,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-09-01 02:32:59,387 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -14 predicate places. [2023-09-01 02:32:59,387 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 122 flow [2023-09-01 02:32:59,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:59,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:32:59,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:32:59,388 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:32:59,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:59,389 INFO L85 PathProgramCache]: Analyzing trace with hash 705819379, now seen corresponding path program 1 times [2023-09-01 02:32:59,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:59,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404660008] [2023-09-01 02:32:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:59,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:59,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:59,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404660008] [2023-09-01 02:32:59,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404660008] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:59,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:59,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:59,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567540763] [2023-09-01 02:32:59,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:59,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:59,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:59,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:59,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:59,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 349 [2023-09-01 02:32:59,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:59,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 349 [2023-09-01 02:32:59,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:00,505 INFO L130 PetriNetUnfolder]: 19971/27482 cut-off events. [2023-09-01 02:33:00,505 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:00,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53940 conditions, 27482 events. 19971/27482 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1308. Compared 166333 event pairs, 19971 based on Foata normal form. 0/24619 useless extension candidates. Maximal degree in co-relation 53936. Up to 26110 conditions per place. [2023-09-01 02:33:00,667 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 45 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-09-01 02:33:00,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 52 transitions, 210 flow [2023-09-01 02:33:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:00,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-09-01 02:33:00,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813753581661891 [2023-09-01 02:33:00,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-09-01 02:33:00,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-09-01 02:33:00,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:00,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-09-01 02:33:00,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,677 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 122 flow. Second operand 3 states and 504 transitions. [2023-09-01 02:33:00,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 52 transitions, 210 flow [2023-09-01 02:33:00,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 52 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:00,678 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 119 flow [2023-09-01 02:33:00,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-09-01 02:33:00,679 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -15 predicate places. [2023-09-01 02:33:00,679 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 119 flow [2023-09-01 02:33:00,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:00,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:00,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:33:00,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:00,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:00,680 INFO L85 PathProgramCache]: Analyzing trace with hash -312390984, now seen corresponding path program 1 times [2023-09-01 02:33:00,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:00,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479945451] [2023-09-01 02:33:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:00,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479945451] [2023-09-01 02:33:00,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479945451] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:00,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:33:00,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971495024] [2023-09-01 02:33:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:33:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:33:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:33:00,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 349 [2023-09-01 02:33:00,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:00,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 349 [2023-09-01 02:33:00,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:01,952 INFO L130 PetriNetUnfolder]: 19803/27218 cut-off events. [2023-09-01 02:33:01,952 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:01,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53429 conditions, 27218 events. 19803/27218 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1306. Compared 164481 event pairs, 19803 based on Foata normal form. 0/24435 useless extension candidates. Maximal degree in co-relation 53425. Up to 25862 conditions per place. [2023-09-01 02:33:02,079 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 43 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-09-01 02:33:02,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 50 transitions, 203 flow [2023-09-01 02:33:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:02,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-09-01 02:33:02,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47659980897803245 [2023-09-01 02:33:02,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-09-01 02:33:02,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-09-01 02:33:02,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:02,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-09-01 02:33:02,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,085 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 119 flow. Second operand 3 states and 499 transitions. [2023-09-01 02:33:02,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 50 transitions, 203 flow [2023-09-01 02:33:02,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:02,087 INFO L231 Difference]: Finished difference. Result has 63 places, 50 transitions, 116 flow [2023-09-01 02:33:02,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=116, PETRI_PLACES=63, PETRI_TRANSITIONS=50} [2023-09-01 02:33:02,087 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -16 predicate places. [2023-09-01 02:33:02,087 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 50 transitions, 116 flow [2023-09-01 02:33:02,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:02,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:33:02,088 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:02,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash -312390982, now seen corresponding path program 1 times [2023-09-01 02:33:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288346976] [2023-09-01 02:33:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:02,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288346976] [2023-09-01 02:33:02,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288346976] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:02,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:02,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:33:02,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319974076] [2023-09-01 02:33:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:02,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:33:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:33:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:33:02,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 349 [2023-09-01 02:33:02,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:02,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 349 [2023-09-01 02:33:02,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:03,411 INFO L130 PetriNetUnfolder]: 19635/26954 cut-off events. [2023-09-01 02:33:03,412 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:03,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52918 conditions, 26954 events. 19635/26954 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 162675 event pairs, 19635 based on Foata normal form. 0/24251 useless extension candidates. Maximal degree in co-relation 52914. Up to 25614 conditions per place. [2023-09-01 02:33:03,626 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 41 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-09-01 02:33:03,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 48 transitions, 196 flow [2023-09-01 02:33:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:03,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:03,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-09-01 02:33:03,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49474689589302767 [2023-09-01 02:33:03,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-09-01 02:33:03,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-09-01 02:33:03,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:03,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-09-01 02:33:03,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,634 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 116 flow. Second operand 3 states and 518 transitions. [2023-09-01 02:33:03,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 48 transitions, 196 flow [2023-09-01 02:33:03,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 48 transitions, 195 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:03,636 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 113 flow [2023-09-01 02:33:03,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-09-01 02:33:03,637 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -17 predicate places. [2023-09-01 02:33:03,638 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 113 flow [2023-09-01 02:33:03,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:03,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:03,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:33:03,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:03,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash 439993859, now seen corresponding path program 1 times [2023-09-01 02:33:03,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023135535] [2023-09-01 02:33:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:03,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:03,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:03,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023135535] [2023-09-01 02:33:03,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023135535] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:03,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:03,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:33:03,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411821009] [2023-09-01 02:33:03,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:03,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:33:03,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:03,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:33:03,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:33:03,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 349 [2023-09-01 02:33:03,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:03,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 349 [2023-09-01 02:33:03,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:04,889 INFO L130 PetriNetUnfolder]: 18864/25859 cut-off events. [2023-09-01 02:33:04,889 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:04,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50793 conditions, 25859 events. 18864/25859 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 154863 event pairs, 18864 based on Foata normal form. 0/23432 useless extension candidates. Maximal degree in co-relation 50789. Up to 24583 conditions per place. [2023-09-01 02:33:05,025 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 39 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-09-01 02:33:05,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 46 transitions, 189 flow [2023-09-01 02:33:05,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:05,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-09-01 02:33:05,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49283667621776506 [2023-09-01 02:33:05,027 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-09-01 02:33:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-09-01 02:33:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:05,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-09-01 02:33:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,031 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 113 flow. Second operand 3 states and 516 transitions. [2023-09-01 02:33:05,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 46 transitions, 189 flow [2023-09-01 02:33:05,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:05,032 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 110 flow [2023-09-01 02:33:05,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-09-01 02:33:05,033 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -18 predicate places. [2023-09-01 02:33:05,033 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 110 flow [2023-09-01 02:33:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:05,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:05,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:33:05,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:05,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash 439993861, now seen corresponding path program 1 times [2023-09-01 02:33:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:05,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669219592] [2023-09-01 02:33:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:05,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:05,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:05,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669219592] [2023-09-01 02:33:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669219592] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:33:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982078309] [2023-09-01 02:33:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:05,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:33:05,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:33:05,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:33:05,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 349 [2023-09-01 02:33:05,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:05,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 349 [2023-09-01 02:33:05,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:06,087 INFO L130 PetriNetUnfolder]: 18093/24764 cut-off events. [2023-09-01 02:33:06,087 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:06,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48668 conditions, 24764 events. 18093/24764 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 147137 event pairs, 18093 based on Foata normal form. 0/22613 useless extension candidates. Maximal degree in co-relation 48664. Up to 23552 conditions per place. [2023-09-01 02:33:06,219 INFO L137 encePairwiseOnDemand]: 346/349 looper letters, 37 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-09-01 02:33:06,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 44 transitions, 182 flow [2023-09-01 02:33:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:06,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:06,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-09-01 02:33:06,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708691499522445 [2023-09-01 02:33:06,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-09-01 02:33:06,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-09-01 02:33:06,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:06,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-09-01 02:33:06,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,224 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 110 flow. Second operand 3 states and 493 transitions. [2023-09-01 02:33:06,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 44 transitions, 182 flow [2023-09-01 02:33:06,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:06,225 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 107 flow [2023-09-01 02:33:06,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-09-01 02:33:06,226 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2023-09-01 02:33:06,226 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 107 flow [2023-09-01 02:33:06,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:06,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:06,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:33:06,227 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:06,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1927322092, now seen corresponding path program 1 times [2023-09-01 02:33:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787027283] [2023-09-01 02:33:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:06,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787027283] [2023-09-01 02:33:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787027283] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:06,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:06,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:33:06,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484451401] [2023-09-01 02:33:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:06,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:33:06,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:33:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:33:06,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 349 [2023-09-01 02:33:06,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 107 flow. Second operand has 7 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:06,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 349 [2023-09-01 02:33:06,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:07,202 INFO L130 PetriNetUnfolder]: 14253/19644 cut-off events. [2023-09-01 02:33:07,202 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:07,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38685 conditions, 19644 events. 14253/19644 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 936. Compared 114357 event pairs, 14253 based on Foata normal form. 0/18517 useless extension candidates. Maximal degree in co-relation 38681. Up to 18688 conditions per place. [2023-09-01 02:33:07,305 INFO L137 encePairwiseOnDemand]: 347/349 looper letters, 36 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 02:33:07,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 43 transitions, 179 flow [2023-09-01 02:33:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:07,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-09-01 02:33:07,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42311365807067813 [2023-09-01 02:33:07,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-09-01 02:33:07,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-09-01 02:33:07,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:07,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-09-01 02:33:07,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,310 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 107 flow. Second operand 3 states and 443 transitions. [2023-09-01 02:33:07,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 43 transitions, 179 flow [2023-09-01 02:33:07,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:07,311 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 106 flow [2023-09-01 02:33:07,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-09-01 02:33:07,312 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2023-09-01 02:33:07,312 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 106 flow [2023-09-01 02:33:07,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:07,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:07,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:33:07,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:07,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1927322093, now seen corresponding path program 1 times [2023-09-01 02:33:07,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:07,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088910817] [2023-09-01 02:33:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:07,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:07,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:07,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088910817] [2023-09-01 02:33:07,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088910817] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:07,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:07,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:33:07,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093765273] [2023-09-01 02:33:07,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:07,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:33:07,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:07,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:33:07,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:33:07,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 349 [2023-09-01 02:33:07,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:07,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 349 [2023-09-01 02:33:07,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:08,232 INFO L130 PetriNetUnfolder]: 10413/14524 cut-off events. [2023-09-01 02:33:08,233 INFO L131 PetriNetUnfolder]: For 128/128 co-relation queries the response was YES. [2023-09-01 02:33:08,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28702 conditions, 14524 events. 10413/14524 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 82530 event pairs, 10413 based on Foata normal form. 0/14421 useless extension candidates. Maximal degree in co-relation 28698. Up to 13824 conditions per place. [2023-09-01 02:33:08,293 INFO L137 encePairwiseOnDemand]: 347/349 looper letters, 35 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 02:33:08,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 176 flow [2023-09-01 02:33:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:33:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:33:08,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 466 transitions. [2023-09-01 02:33:08,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44508118433619864 [2023-09-01 02:33:08,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 466 transitions. [2023-09-01 02:33:08,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 466 transitions. [2023-09-01 02:33:08,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:08,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 466 transitions. [2023-09-01 02:33:08,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,298 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 106 flow. Second operand 3 states and 466 transitions. [2023-09-01 02:33:08,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 176 flow [2023-09-01 02:33:08,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:08,299 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 105 flow [2023-09-01 02:33:08,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2023-09-01 02:33:08,300 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -19 predicate places. [2023-09-01 02:33:08,300 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 105 flow [2023-09-01 02:33:08,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:08,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:33:08,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:08,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1177808455, now seen corresponding path program 1 times [2023-09-01 02:33:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831695057] [2023-09-01 02:33:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:09,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:09,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831695057] [2023-09-01 02:33:09,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831695057] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:09,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:09,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:33:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708402642] [2023-09-01 02:33:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:09,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:33:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:33:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:33:09,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 349 [2023-09-01 02:33:09,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 105 flow. Second operand has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:09,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 349 [2023-09-01 02:33:09,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:11,816 INFO L130 PetriNetUnfolder]: 53433/69727 cut-off events. [2023-09-01 02:33:11,816 INFO L131 PetriNetUnfolder]: For 1078/1078 co-relation queries the response was YES. [2023-09-01 02:33:12,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140753 conditions, 69727 events. 53433/69727 cut-off events. For 1078/1078 co-relation queries the response was YES. Maximal size of possible extension queue 1645. Compared 368916 event pairs, 13820 based on Foata normal form. 1/69728 useless extension candidates. Maximal degree in co-relation 140749. Up to 35415 conditions per place. [2023-09-01 02:33:12,157 INFO L137 encePairwiseOnDemand]: 341/349 looper letters, 116 selfloop transitions, 15 changer transitions 15/146 dead transitions. [2023-09-01 02:33:12,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 146 transitions, 624 flow [2023-09-01 02:33:12,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:33:12,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:33:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1065 transitions. [2023-09-01 02:33:12,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085959885386819 [2023-09-01 02:33:12,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1065 transitions. [2023-09-01 02:33:12,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1065 transitions. [2023-09-01 02:33:12,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:12,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1065 transitions. [2023-09-01 02:33:12,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.5) internal successors, (1065), 6 states have internal predecessors, (1065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:12,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 349.0) internal successors, (2443), 7 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:12,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 349.0) internal successors, (2443), 7 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:12,165 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 105 flow. Second operand 6 states and 1065 transitions. [2023-09-01 02:33:12,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 146 transitions, 624 flow [2023-09-01 02:33:12,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 146 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:12,167 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 205 flow [2023-09-01 02:33:12,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-09-01 02:33:12,167 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -12 predicate places. [2023-09-01 02:33:12,168 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 205 flow [2023-09-01 02:33:12,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:12,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:12,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:12,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:33:12,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:12,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:12,169 INFO L85 PathProgramCache]: Analyzing trace with hash -796589763, now seen corresponding path program 2 times [2023-09-01 02:33:12,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:12,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112442498] [2023-09-01 02:33:12,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:12,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:12,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:12,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112442498] [2023-09-01 02:33:12,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112442498] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:12,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:12,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:33:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966827660] [2023-09-01 02:33:12,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:12,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:33:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:12,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:33:12,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:33:12,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 349 [2023-09-01 02:33:12,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 205 flow. Second operand has 9 states, 9 states have (on average 154.44444444444446) internal successors, (1390), 9 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:12,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:12,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 349 [2023-09-01 02:33:12,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:15,224 INFO L130 PetriNetUnfolder]: 30690/40507 cut-off events. [2023-09-01 02:33:15,224 INFO L131 PetriNetUnfolder]: For 8670/8670 co-relation queries the response was YES. [2023-09-01 02:33:15,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92238 conditions, 40507 events. 30690/40507 cut-off events. For 8670/8670 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 209623 event pairs, 11956 based on Foata normal form. 64/40539 useless extension candidates. Maximal degree in co-relation 92231. Up to 35481 conditions per place. [2023-09-01 02:33:15,378 INFO L137 encePairwiseOnDemand]: 338/349 looper letters, 152 selfloop transitions, 99 changer transitions 0/254 dead transitions. [2023-09-01 02:33:15,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 254 transitions, 1287 flow [2023-09-01 02:33:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:33:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:33:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2165 transitions. [2023-09-01 02:33:15,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4771875688781133 [2023-09-01 02:33:15,384 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2165 transitions. [2023-09-01 02:33:15,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2165 transitions. [2023-09-01 02:33:15,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:15,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2165 transitions. [2023-09-01 02:33:15,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.53846153846155) internal successors, (2165), 13 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:15,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:15,396 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:15,396 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 205 flow. Second operand 13 states and 2165 transitions. [2023-09-01 02:33:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 254 transitions, 1287 flow [2023-09-01 02:33:15,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 254 transitions, 1250 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:15,413 INFO L231 Difference]: Finished difference. Result has 80 places, 156 transitions, 770 flow [2023-09-01 02:33:15,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=770, PETRI_PLACES=80, PETRI_TRANSITIONS=156} [2023-09-01 02:33:15,414 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-09-01 02:33:15,415 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 156 transitions, 770 flow [2023-09-01 02:33:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 154.44444444444446) internal successors, (1390), 9 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:15,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:15,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:33:15,416 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:15,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:15,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1493230331, now seen corresponding path program 3 times [2023-09-01 02:33:15,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:15,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441295630] [2023-09-01 02:33:15,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:15,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:15,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:15,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441295630] [2023-09-01 02:33:15,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441295630] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:15,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:15,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:33:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859219871] [2023-09-01 02:33:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:15,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:33:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:33:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:33:15,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:33:15,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 156 transitions, 770 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:15,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:15,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:33:15,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:17,202 INFO L130 PetriNetUnfolder]: 22684/32151 cut-off events. [2023-09-01 02:33:17,203 INFO L131 PetriNetUnfolder]: For 11332/11332 co-relation queries the response was YES. [2023-09-01 02:33:17,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77916 conditions, 32151 events. 22684/32151 cut-off events. For 11332/11332 co-relation queries the response was YES. Maximal size of possible extension queue 1211. Compared 199944 event pairs, 3976 based on Foata normal form. 680/32063 useless extension candidates. Maximal degree in co-relation 77907. Up to 19240 conditions per place. [2023-09-01 02:33:17,457 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 147 selfloop transitions, 33 changer transitions 0/251 dead transitions. [2023-09-01 02:33:17,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 251 transitions, 1382 flow [2023-09-01 02:33:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:33:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:33:17,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1213 transitions. [2023-09-01 02:33:17,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965206713057716 [2023-09-01 02:33:17,460 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1213 transitions. [2023-09-01 02:33:17,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1213 transitions. [2023-09-01 02:33:17,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:17,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1213 transitions. [2023-09-01 02:33:17,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 173.28571428571428) internal successors, (1213), 7 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:17,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:17,465 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:17,465 INFO L175 Difference]: Start difference. First operand has 80 places, 156 transitions, 770 flow. Second operand 7 states and 1213 transitions. [2023-09-01 02:33:17,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 251 transitions, 1382 flow [2023-09-01 02:33:17,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 251 transitions, 1382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:33:17,522 INFO L231 Difference]: Finished difference. Result has 89 places, 167 transitions, 872 flow [2023-09-01 02:33:17,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=872, PETRI_PLACES=89, PETRI_TRANSITIONS=167} [2023-09-01 02:33:17,523 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 10 predicate places. [2023-09-01 02:33:17,523 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 167 transitions, 872 flow [2023-09-01 02:33:17,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:17,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:17,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:17,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 02:33:17,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:17,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:17,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1577065065, now seen corresponding path program 4 times [2023-09-01 02:33:17,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:17,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452809223] [2023-09-01 02:33:17,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:17,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:17,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:17,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452809223] [2023-09-01 02:33:17,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452809223] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:17,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:17,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:33:17,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005355825] [2023-09-01 02:33:17,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:17,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:33:17,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:17,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:33:17,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:33:17,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:33:17,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 167 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:17,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:17,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:33:17,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:20,827 INFO L130 PetriNetUnfolder]: 35873/53245 cut-off events. [2023-09-01 02:33:20,827 INFO L131 PetriNetUnfolder]: For 38133/38221 co-relation queries the response was YES. [2023-09-01 02:33:21,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149108 conditions, 53245 events. 35873/53245 cut-off events. For 38133/38221 co-relation queries the response was YES. Maximal size of possible extension queue 2282. Compared 391614 event pairs, 6488 based on Foata normal form. 176/51200 useless extension candidates. Maximal degree in co-relation 149095. Up to 12626 conditions per place. [2023-09-01 02:33:21,439 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 164 selfloop transitions, 143 changer transitions 0/378 dead transitions. [2023-09-01 02:33:21,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 378 transitions, 2239 flow [2023-09-01 02:33:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:33:21,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:33:21,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2248 transitions. [2023-09-01 02:33:21,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954815957681287 [2023-09-01 02:33:21,813 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2248 transitions. [2023-09-01 02:33:21,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2248 transitions. [2023-09-01 02:33:21,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:21,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2248 transitions. [2023-09-01 02:33:21,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.92307692307693) internal successors, (2248), 13 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:21,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:21,822 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:21,822 INFO L175 Difference]: Start difference. First operand has 89 places, 167 transitions, 872 flow. Second operand 13 states and 2248 transitions. [2023-09-01 02:33:21,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 378 transitions, 2239 flow [2023-09-01 02:33:21,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 378 transitions, 2233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:33:21,929 INFO L231 Difference]: Finished difference. Result has 102 places, 263 transitions, 1647 flow [2023-09-01 02:33:21,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1647, PETRI_PLACES=102, PETRI_TRANSITIONS=263} [2023-09-01 02:33:21,930 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 23 predicate places. [2023-09-01 02:33:21,930 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 263 transitions, 1647 flow [2023-09-01 02:33:21,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:21,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:21,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:21,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 02:33:21,931 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:21,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:21,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1168853497, now seen corresponding path program 5 times [2023-09-01 02:33:21,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:21,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728204367] [2023-09-01 02:33:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:21,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:22,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:22,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:22,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728204367] [2023-09-01 02:33:22,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728204367] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:22,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:22,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:22,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711565931] [2023-09-01 02:33:22,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:22,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:22,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:22,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:22,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 349 [2023-09-01 02:33:22,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 263 transitions, 1647 flow. Second operand has 8 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:22,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:22,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 349 [2023-09-01 02:33:22,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:26,332 INFO L130 PetriNetUnfolder]: 37845/55681 cut-off events. [2023-09-01 02:33:26,332 INFO L131 PetriNetUnfolder]: For 91572/93338 co-relation queries the response was YES. [2023-09-01 02:33:26,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187811 conditions, 55681 events. 37845/55681 cut-off events. For 91572/93338 co-relation queries the response was YES. Maximal size of possible extension queue 2305. Compared 404352 event pairs, 8128 based on Foata normal form. 862/54379 useless extension candidates. Maximal degree in co-relation 187795. Up to 36338 conditions per place. [2023-09-01 02:33:27,099 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 191 selfloop transitions, 119 changer transitions 0/381 dead transitions. [2023-09-01 02:33:27,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 381 transitions, 2745 flow [2023-09-01 02:33:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:33:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:33:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1901 transitions. [2023-09-01 02:33:27,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49518103672831465 [2023-09-01 02:33:27,104 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1901 transitions. [2023-09-01 02:33:27,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1901 transitions. [2023-09-01 02:33:27,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:27,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1901 transitions. [2023-09-01 02:33:27,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 172.8181818181818) internal successors, (1901), 11 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:27,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:27,112 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:27,112 INFO L175 Difference]: Start difference. First operand has 102 places, 263 transitions, 1647 flow. Second operand 11 states and 1901 transitions. [2023-09-01 02:33:27,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 381 transitions, 2745 flow [2023-09-01 02:33:27,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 381 transitions, 2676 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-09-01 02:33:27,433 INFO L231 Difference]: Finished difference. Result has 113 places, 285 transitions, 2109 flow [2023-09-01 02:33:27,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2109, PETRI_PLACES=113, PETRI_TRANSITIONS=285} [2023-09-01 02:33:27,434 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 34 predicate places. [2023-09-01 02:33:27,434 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 285 transitions, 2109 flow [2023-09-01 02:33:27,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 160.5) internal successors, (1284), 8 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:27,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:27,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:27,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 02:33:27,435 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:27,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1755977435, now seen corresponding path program 6 times [2023-09-01 02:33:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:27,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226489607] [2023-09-01 02:33:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:27,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:28,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:28,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:28,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226489607] [2023-09-01 02:33:28,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226489607] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:28,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:28,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:33:28,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066335883] [2023-09-01 02:33:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:28,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:33:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:28,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:33:28,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:33:28,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 349 [2023-09-01 02:33:28,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 285 transitions, 2109 flow. Second operand has 7 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:28,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:28,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 349 [2023-09-01 02:33:28,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:33,873 INFO L130 PetriNetUnfolder]: 56766/77025 cut-off events. [2023-09-01 02:33:33,873 INFO L131 PetriNetUnfolder]: For 125108/125152 co-relation queries the response was YES. [2023-09-01 02:33:34,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271707 conditions, 77025 events. 56766/77025 cut-off events. For 125108/125152 co-relation queries the response was YES. Maximal size of possible extension queue 2223. Compared 463632 event pairs, 17266 based on Foata normal form. 456/77481 useless extension candidates. Maximal degree in co-relation 271687. Up to 69099 conditions per place. [2023-09-01 02:33:34,479 INFO L137 encePairwiseOnDemand]: 338/349 looper letters, 287 selfloop transitions, 103 changer transitions 0/393 dead transitions. [2023-09-01 02:33:34,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 393 transitions, 3370 flow [2023-09-01 02:33:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:33:34,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:33:34,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1515 transitions. [2023-09-01 02:33:34,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48233046800382046 [2023-09-01 02:33:34,484 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1515 transitions. [2023-09-01 02:33:34,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1515 transitions. [2023-09-01 02:33:34,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:34,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1515 transitions. [2023-09-01 02:33:34,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 168.33333333333334) internal successors, (1515), 9 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:34,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:34,489 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:34,489 INFO L175 Difference]: Start difference. First operand has 113 places, 285 transitions, 2109 flow. Second operand 9 states and 1515 transitions. [2023-09-01 02:33:34,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 393 transitions, 3370 flow [2023-09-01 02:33:34,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 393 transitions, 3229 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-09-01 02:33:34,760 INFO L231 Difference]: Finished difference. Result has 117 places, 311 transitions, 2401 flow [2023-09-01 02:33:34,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2401, PETRI_PLACES=117, PETRI_TRANSITIONS=311} [2023-09-01 02:33:34,760 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 38 predicate places. [2023-09-01 02:33:34,761 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 311 transitions, 2401 flow [2023-09-01 02:33:34,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:34,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:34,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 02:33:34,762 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:34,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1807287081, now seen corresponding path program 7 times [2023-09-01 02:33:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:34,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283839613] [2023-09-01 02:33:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:34,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:34,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:34,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283839613] [2023-09-01 02:33:34,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283839613] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:34,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:34,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:34,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250186124] [2023-09-01 02:33:34,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:34,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:34,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:34,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:34,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:33:34,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 311 transitions, 2401 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:34,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:34,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:33:34,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:40,945 INFO L130 PetriNetUnfolder]: 47283/70647 cut-off events. [2023-09-01 02:33:40,945 INFO L131 PetriNetUnfolder]: For 122865/124745 co-relation queries the response was YES. [2023-09-01 02:33:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241321 conditions, 70647 events. 47283/70647 cut-off events. For 122865/124745 co-relation queries the response was YES. Maximal size of possible extension queue 2938. Compared 545451 event pairs, 8027 based on Foata normal form. 1520/69382 useless extension candidates. Maximal degree in co-relation 241301. Up to 15692 conditions per place. [2023-09-01 02:33:41,645 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 198 selfloop transitions, 200 changer transitions 0/495 dead transitions. [2023-09-01 02:33:41,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 495 transitions, 4109 flow [2023-09-01 02:33:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:33:41,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:33:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1916 transitions. [2023-09-01 02:33:41,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4990883042458974 [2023-09-01 02:33:41,654 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1916 transitions. [2023-09-01 02:33:41,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1916 transitions. [2023-09-01 02:33:41,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:41,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1916 transitions. [2023-09-01 02:33:41,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 174.1818181818182) internal successors, (1916), 11 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:41,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:41,660 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:41,660 INFO L175 Difference]: Start difference. First operand has 117 places, 311 transitions, 2401 flow. Second operand 11 states and 1916 transitions. [2023-09-01 02:33:41,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 495 transitions, 4109 flow [2023-09-01 02:33:42,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 495 transitions, 4002 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:33:42,066 INFO L231 Difference]: Finished difference. Result has 127 places, 377 transitions, 3483 flow [2023-09-01 02:33:42,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=2294, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3483, PETRI_PLACES=127, PETRI_TRANSITIONS=377} [2023-09-01 02:33:42,067 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 48 predicate places. [2023-09-01 02:33:42,067 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 377 transitions, 3483 flow [2023-09-01 02:33:42,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:42,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:42,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:42,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 02:33:42,068 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:42,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash -823266407, now seen corresponding path program 8 times [2023-09-01 02:33:42,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:42,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901244462] [2023-09-01 02:33:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:42,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:42,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901244462] [2023-09-01 02:33:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901244462] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:42,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:42,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:33:42,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668305056] [2023-09-01 02:33:42,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:42,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:33:42,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:42,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:33:42,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:33:42,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:33:42,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 377 transitions, 3483 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:42,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:42,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:33:42,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:50,262 INFO L130 PetriNetUnfolder]: 58779/88231 cut-off events. [2023-09-01 02:33:50,262 INFO L131 PetriNetUnfolder]: For 296838/300928 co-relation queries the response was YES. [2023-09-01 02:33:50,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358990 conditions, 88231 events. 58779/88231 cut-off events. For 296838/300928 co-relation queries the response was YES. Maximal size of possible extension queue 3583. Compared 702205 event pairs, 10222 based on Foata normal form. 2646/87634 useless extension candidates. Maximal degree in co-relation 358966. Up to 31624 conditions per place. [2023-09-01 02:33:51,399 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 245 selfloop transitions, 225 changer transitions 0/567 dead transitions. [2023-09-01 02:33:51,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 567 transitions, 5774 flow [2023-09-01 02:33:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:33:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:33:51,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1563 transitions. [2023-09-01 02:33:51,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976122254059217 [2023-09-01 02:33:51,401 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1563 transitions. [2023-09-01 02:33:51,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1563 transitions. [2023-09-01 02:33:51,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:51,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1563 transitions. [2023-09-01 02:33:51,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 173.66666666666666) internal successors, (1563), 9 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:51,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:51,405 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:51,405 INFO L175 Difference]: Start difference. First operand has 127 places, 377 transitions, 3483 flow. Second operand 9 states and 1563 transitions. [2023-09-01 02:33:51,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 567 transitions, 5774 flow [2023-09-01 02:33:53,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 567 transitions, 5729 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-09-01 02:33:53,756 INFO L231 Difference]: Finished difference. Result has 136 places, 455 transitions, 5163 flow [2023-09-01 02:33:53,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5163, PETRI_PLACES=136, PETRI_TRANSITIONS=455} [2023-09-01 02:33:53,756 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 57 predicate places. [2023-09-01 02:33:53,757 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 455 transitions, 5163 flow [2023-09-01 02:33:53,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:53,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:53,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:53,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 02:33:53,757 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:33:53,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1350075187, now seen corresponding path program 9 times [2023-09-01 02:33:53,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:53,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430073166] [2023-09-01 02:33:53,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:53,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430073166] [2023-09-01 02:33:53,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430073166] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:53,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:53,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:33:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420455228] [2023-09-01 02:33:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:33:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:33:53,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:33:53,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:33:53,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 455 transitions, 5163 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:53,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:53,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:33:53,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:02,020 INFO L130 PetriNetUnfolder]: 54312/81614 cut-off events. [2023-09-01 02:34:02,020 INFO L131 PetriNetUnfolder]: For 435015/440460 co-relation queries the response was YES. [2023-09-01 02:34:02,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381124 conditions, 81614 events. 54312/81614 cut-off events. For 435015/440460 co-relation queries the response was YES. Maximal size of possible extension queue 3387. Compared 643093 event pairs, 14689 based on Foata normal form. 2494/81135 useless extension candidates. Maximal degree in co-relation 381095. Up to 59301 conditions per place. [2023-09-01 02:34:02,965 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 289 selfloop transitions, 185 changer transitions 7/564 dead transitions. [2023-09-01 02:34:02,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 564 transitions, 7021 flow [2023-09-01 02:34:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:34:02,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:34:02,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1545 transitions. [2023-09-01 02:34:02,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918815663801337 [2023-09-01 02:34:02,967 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1545 transitions. [2023-09-01 02:34:02,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1545 transitions. [2023-09-01 02:34:02,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:02,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1545 transitions. [2023-09-01 02:34:02,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 171.66666666666666) internal successors, (1545), 9 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:02,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:02,971 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:02,972 INFO L175 Difference]: Start difference. First operand has 136 places, 455 transitions, 5163 flow. Second operand 9 states and 1545 transitions. [2023-09-01 02:34:02,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 564 transitions, 7021 flow [2023-09-01 02:34:04,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 564 transitions, 6914 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-09-01 02:34:04,587 INFO L231 Difference]: Finished difference. Result has 143 places, 464 transitions, 5897 flow [2023-09-01 02:34:04,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=4781, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5897, PETRI_PLACES=143, PETRI_TRANSITIONS=464} [2023-09-01 02:34:04,588 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 64 predicate places. [2023-09-01 02:34:04,588 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 464 transitions, 5897 flow [2023-09-01 02:34:04,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:04,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:04,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:04,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 02:34:04,589 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:04,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:04,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1354758679, now seen corresponding path program 10 times [2023-09-01 02:34:04,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:04,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798711613] [2023-09-01 02:34:04,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:04,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:04,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:04,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798711613] [2023-09-01 02:34:04,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798711613] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:04,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:04,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:34:04,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688182820] [2023-09-01 02:34:04,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:34:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:04,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:34:04,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:34:04,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:04,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 464 transitions, 5897 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:04,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:04,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:04,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:12,173 INFO L130 PetriNetUnfolder]: 48191/72993 cut-off events. [2023-09-01 02:34:12,173 INFO L131 PetriNetUnfolder]: For 392705/398268 co-relation queries the response was YES. [2023-09-01 02:34:12,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339336 conditions, 72993 events. 48191/72993 cut-off events. For 392705/398268 co-relation queries the response was YES. Maximal size of possible extension queue 3245. Compared 576999 event pairs, 16174 based on Foata normal form. 1912/72018 useless extension candidates. Maximal degree in co-relation 339305. Up to 55042 conditions per place. [2023-09-01 02:34:13,000 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 271 selfloop transitions, 179 changer transitions 10/535 dead transitions. [2023-09-01 02:34:13,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 535 transitions, 7376 flow [2023-09-01 02:34:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:34:13,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:34:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1203 transitions. [2023-09-01 02:34:13,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924273434302088 [2023-09-01 02:34:13,002 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1203 transitions. [2023-09-01 02:34:13,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1203 transitions. [2023-09-01 02:34:13,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:13,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1203 transitions. [2023-09-01 02:34:13,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.85714285714286) internal successors, (1203), 7 states have internal predecessors, (1203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:13,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:13,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:13,005 INFO L175 Difference]: Start difference. First operand has 143 places, 464 transitions, 5897 flow. Second operand 7 states and 1203 transitions. [2023-09-01 02:34:13,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 535 transitions, 7376 flow [2023-09-01 02:34:13,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 535 transitions, 7171 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-09-01 02:34:13,738 INFO L231 Difference]: Finished difference. Result has 147 places, 454 transitions, 6241 flow [2023-09-01 02:34:13,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5017, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6241, PETRI_PLACES=147, PETRI_TRANSITIONS=454} [2023-09-01 02:34:13,738 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 68 predicate places. [2023-09-01 02:34:13,738 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 454 transitions, 6241 flow [2023-09-01 02:34:13,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:13,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:13,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:13,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 02:34:13,739 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:13,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1058590211, now seen corresponding path program 11 times [2023-09-01 02:34:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808147271] [2023-09-01 02:34:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:13,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808147271] [2023-09-01 02:34:13,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808147271] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:13,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:13,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:34:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661268487] [2023-09-01 02:34:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:13,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:34:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:13,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:34:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:34:13,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:13,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 454 transitions, 6241 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:13,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:13,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:13,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:20,776 INFO L130 PetriNetUnfolder]: 44742/68087 cut-off events. [2023-09-01 02:34:20,776 INFO L131 PetriNetUnfolder]: For 359592/364280 co-relation queries the response was YES. [2023-09-01 02:34:21,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317294 conditions, 68087 events. 44742/68087 cut-off events. For 359592/364280 co-relation queries the response was YES. Maximal size of possible extension queue 3182. Compared 539092 event pairs, 16002 based on Foata normal form. 1236/66658 useless extension candidates. Maximal degree in co-relation 317261. Up to 52821 conditions per place. [2023-09-01 02:34:21,721 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 236 selfloop transitions, 164 changer transitions 23/488 dead transitions. [2023-09-01 02:34:21,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 488 transitions, 7250 flow [2023-09-01 02:34:21,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:34:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:34:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1186 transitions. [2023-09-01 02:34:21,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854686860417519 [2023-09-01 02:34:21,723 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1186 transitions. [2023-09-01 02:34:21,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1186 transitions. [2023-09-01 02:34:21,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:21,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1186 transitions. [2023-09-01 02:34:21,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.42857142857142) internal successors, (1186), 7 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:21,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:21,727 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:21,727 INFO L175 Difference]: Start difference. First operand has 147 places, 454 transitions, 6241 flow. Second operand 7 states and 1186 transitions. [2023-09-01 02:34:21,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 488 transitions, 7250 flow [2023-09-01 02:34:23,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 488 transitions, 7037 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-09-01 02:34:23,264 INFO L231 Difference]: Finished difference. Result has 143 places, 416 transitions, 6130 flow [2023-09-01 02:34:23,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5398, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6130, PETRI_PLACES=143, PETRI_TRANSITIONS=416} [2023-09-01 02:34:23,265 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 64 predicate places. [2023-09-01 02:34:23,265 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 416 transitions, 6130 flow [2023-09-01 02:34:23,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:23,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:23,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:23,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 02:34:23,266 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:23,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:23,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1946806281, now seen corresponding path program 12 times [2023-09-01 02:34:23,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:23,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653873333] [2023-09-01 02:34:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:23,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:23,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:23,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653873333] [2023-09-01 02:34:23,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653873333] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:23,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:23,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:34:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463974777] [2023-09-01 02:34:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:23,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:34:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:34:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:34:23,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:23,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 416 transitions, 6130 flow. Second operand has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:23,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:23,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:23,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:28,803 INFO L130 PetriNetUnfolder]: 34461/54520 cut-off events. [2023-09-01 02:34:28,803 INFO L131 PetriNetUnfolder]: For 265762/272225 co-relation queries the response was YES. [2023-09-01 02:34:29,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243868 conditions, 54520 events. 34461/54520 cut-off events. For 265762/272225 co-relation queries the response was YES. Maximal size of possible extension queue 2500. Compared 441091 event pairs, 12240 based on Foata normal form. 1556/54148 useless extension candidates. Maximal degree in co-relation 243836. Up to 42895 conditions per place. [2023-09-01 02:34:29,373 INFO L137 encePairwiseOnDemand]: 338/349 looper letters, 279 selfloop transitions, 143 changer transitions 0/463 dead transitions. [2023-09-01 02:34:29,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 463 transitions, 7201 flow [2023-09-01 02:34:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:34:29,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:34:29,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-09-01 02:34:29,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4871060171919771 [2023-09-01 02:34:29,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-09-01 02:34:29,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-09-01 02:34:29,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:29,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-09-01 02:34:29,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:29,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:29,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 349.0) internal successors, (2792), 8 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:29,378 INFO L175 Difference]: Start difference. First operand has 143 places, 416 transitions, 6130 flow. Second operand 7 states and 1190 transitions. [2023-09-01 02:34:29,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 463 transitions, 7201 flow [2023-09-01 02:34:30,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 463 transitions, 7019 flow, removed 13 selfloop flow, removed 8 redundant places. [2023-09-01 02:34:30,128 INFO L231 Difference]: Finished difference. Result has 124 places, 372 transitions, 5598 flow [2023-09-01 02:34:30,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=4788, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5598, PETRI_PLACES=124, PETRI_TRANSITIONS=372} [2023-09-01 02:34:30,129 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 45 predicate places. [2023-09-01 02:34:30,129 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 372 transitions, 5598 flow [2023-09-01 02:34:30,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:30,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:30,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:30,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 02:34:30,129 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:30,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:30,129 INFO L85 PathProgramCache]: Analyzing trace with hash -147495517, now seen corresponding path program 13 times [2023-09-01 02:34:30,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:30,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862501289] [2023-09-01 02:34:30,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:30,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862501289] [2023-09-01 02:34:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862501289] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:30,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:30,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:34:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031843917] [2023-09-01 02:34:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:34:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:34:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:34:30,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:30,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 372 transitions, 5598 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:30,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:30,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:35,634 INFO L130 PetriNetUnfolder]: 34160/54446 cut-off events. [2023-09-01 02:34:35,634 INFO L131 PetriNetUnfolder]: For 259659/265526 co-relation queries the response was YES. [2023-09-01 02:34:35,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236518 conditions, 54446 events. 34160/54446 cut-off events. For 259659/265526 co-relation queries the response was YES. Maximal size of possible extension queue 2516. Compared 446810 event pairs, 9492 based on Foata normal form. 1978/54366 useless extension candidates. Maximal degree in co-relation 236489. Up to 36352 conditions per place. [2023-09-01 02:34:36,178 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 297 selfloop transitions, 220 changer transitions 0/558 dead transitions. [2023-09-01 02:34:36,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 558 transitions, 8571 flow [2023-09-01 02:34:36,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:34:36,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:34:36,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1861 transitions. [2023-09-01 02:34:36,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48476165668142746 [2023-09-01 02:34:36,180 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1861 transitions. [2023-09-01 02:34:36,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1861 transitions. [2023-09-01 02:34:36,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:36,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1861 transitions. [2023-09-01 02:34:36,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 169.1818181818182) internal successors, (1861), 11 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:36,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:36,184 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 349.0) internal successors, (4188), 12 states have internal predecessors, (4188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:36,184 INFO L175 Difference]: Start difference. First operand has 124 places, 372 transitions, 5598 flow. Second operand 11 states and 1861 transitions. [2023-09-01 02:34:36,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 558 transitions, 8571 flow [2023-09-01 02:34:36,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 558 transitions, 8566 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:34:36,423 INFO L231 Difference]: Finished difference. Result has 135 places, 429 transitions, 7121 flow [2023-09-01 02:34:36,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=5593, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7121, PETRI_PLACES=135, PETRI_TRANSITIONS=429} [2023-09-01 02:34:36,424 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 56 predicate places. [2023-09-01 02:34:36,424 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 429 transitions, 7121 flow [2023-09-01 02:34:36,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:36,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:36,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:36,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 02:34:36,424 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:36,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:36,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1234927603, now seen corresponding path program 14 times [2023-09-01 02:34:36,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:36,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191745092] [2023-09-01 02:34:36,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:36,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:36,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:36,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191745092] [2023-09-01 02:34:36,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191745092] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:36,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:36,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:34:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773155626] [2023-09-01 02:34:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:36,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:34:36,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:36,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:34:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:34:36,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:36,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 429 transitions, 7121 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:36,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:36,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:36,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:42,431 INFO L130 PetriNetUnfolder]: 34801/55378 cut-off events. [2023-09-01 02:34:42,432 INFO L131 PetriNetUnfolder]: For 327895/345463 co-relation queries the response was YES. [2023-09-01 02:34:43,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257918 conditions, 55378 events. 34801/55378 cut-off events. For 327895/345463 co-relation queries the response was YES. Maximal size of possible extension queue 2540. Compared 453453 event pairs, 7065 based on Foata normal form. 8112/61448 useless extension candidates. Maximal degree in co-relation 257886. Up to 27545 conditions per place. [2023-09-01 02:34:43,228 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 262 selfloop transitions, 295 changer transitions 0/598 dead transitions. [2023-09-01 02:34:43,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 598 transitions, 9844 flow [2023-09-01 02:34:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:34:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:34:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1554 transitions. [2023-09-01 02:34:43,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49474689589302767 [2023-09-01 02:34:43,230 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1554 transitions. [2023-09-01 02:34:43,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1554 transitions. [2023-09-01 02:34:43,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:43,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1554 transitions. [2023-09-01 02:34:43,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:43,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:43,233 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 349.0) internal successors, (3490), 10 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:43,233 INFO L175 Difference]: Start difference. First operand has 135 places, 429 transitions, 7121 flow. Second operand 9 states and 1554 transitions. [2023-09-01 02:34:43,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 598 transitions, 9844 flow [2023-09-01 02:34:43,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 598 transitions, 9460 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-09-01 02:34:43,648 INFO L231 Difference]: Finished difference. Result has 140 places, 468 transitions, 8195 flow [2023-09-01 02:34:43,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=6797, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8195, PETRI_PLACES=140, PETRI_TRANSITIONS=468} [2023-09-01 02:34:43,649 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 61 predicate places. [2023-09-01 02:34:43,649 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 468 transitions, 8195 flow [2023-09-01 02:34:43,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:43,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:43,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 02:34:43,650 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:43,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:43,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1195899009, now seen corresponding path program 15 times [2023-09-01 02:34:43,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449855163] [2023-09-01 02:34:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:43,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:43,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:43,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449855163] [2023-09-01 02:34:43,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449855163] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:43,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:43,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:34:43,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384216625] [2023-09-01 02:34:43,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:43,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:34:43,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:34:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:34:43,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:43,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 468 transitions, 8195 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:43,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:43,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:43,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:50,773 INFO L130 PetriNetUnfolder]: 36116/58343 cut-off events. [2023-09-01 02:34:50,773 INFO L131 PetriNetUnfolder]: For 430072/451244 co-relation queries the response was YES. [2023-09-01 02:34:51,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291629 conditions, 58343 events. 36116/58343 cut-off events. For 430072/451244 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 492757 event pairs, 7312 based on Foata normal form. 9730/65939 useless extension candidates. Maximal degree in co-relation 291595. Up to 27267 conditions per place. [2023-09-01 02:34:51,393 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 320 selfloop transitions, 423 changer transitions 8/792 dead transitions. [2023-09-01 02:34:51,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 792 transitions, 13902 flow [2023-09-01 02:34:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:34:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:34:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2073 transitions. [2023-09-01 02:34:51,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49498567335243554 [2023-09-01 02:34:51,395 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2073 transitions. [2023-09-01 02:34:51,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2073 transitions. [2023-09-01 02:34:51,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:51,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2073 transitions. [2023-09-01 02:34:51,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 172.75) internal successors, (2073), 12 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:51,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:51,399 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:51,399 INFO L175 Difference]: Start difference. First operand has 140 places, 468 transitions, 8195 flow. Second operand 12 states and 2073 transitions. [2023-09-01 02:34:51,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 792 transitions, 13902 flow [2023-09-01 02:34:52,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 792 transitions, 13428 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:34:52,049 INFO L231 Difference]: Finished difference. Result has 151 places, 603 transitions, 11703 flow [2023-09-01 02:34:52,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=7866, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=287, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11703, PETRI_PLACES=151, PETRI_TRANSITIONS=603} [2023-09-01 02:34:52,050 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 72 predicate places. [2023-09-01 02:34:52,050 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 603 transitions, 11703 flow [2023-09-01 02:34:52,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:52,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:52,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 02:34:52,051 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:34:52,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash 873171655, now seen corresponding path program 16 times [2023-09-01 02:34:52,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:52,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842549408] [2023-09-01 02:34:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:52,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:52,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:52,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842549408] [2023-09-01 02:34:52,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842549408] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:34:52,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:34:52,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:34:52,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110767625] [2023-09-01 02:34:52,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:34:52,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:34:52,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:34:52,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:34:52,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:34:52,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 603 transitions, 11703 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:52,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:52,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:34:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:35:00,137 INFO L130 PetriNetUnfolder]: 37584/60964 cut-off events. [2023-09-01 02:35:00,137 INFO L131 PetriNetUnfolder]: For 542634/567100 co-relation queries the response was YES. [2023-09-01 02:35:00,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319794 conditions, 60964 events. 37584/60964 cut-off events. For 542634/567100 co-relation queries the response was YES. Maximal size of possible extension queue 2935. Compared 525053 event pairs, 7144 based on Foata normal form. 10268/68694 useless extension candidates. Maximal degree in co-relation 319756. Up to 14845 conditions per place. [2023-09-01 02:35:00,857 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 232 selfloop transitions, 547 changer transitions 2/822 dead transitions. [2023-09-01 02:35:00,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 822 transitions, 15536 flow [2023-09-01 02:35:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 02:35:00,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 02:35:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2393 transitions. [2023-09-01 02:35:00,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48976668031109294 [2023-09-01 02:35:00,860 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2393 transitions. [2023-09-01 02:35:00,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2393 transitions. [2023-09-01 02:35:00,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:35:00,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2393 transitions. [2023-09-01 02:35:00,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 170.92857142857142) internal successors, (2393), 14 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:00,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:00,864 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:00,864 INFO L175 Difference]: Start difference. First operand has 151 places, 603 transitions, 11703 flow. Second operand 14 states and 2393 transitions. [2023-09-01 02:35:00,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 822 transitions, 15536 flow [2023-09-01 02:35:02,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 822 transitions, 14929 flow, removed 33 selfloop flow, removed 4 redundant places. [2023-09-01 02:35:02,095 INFO L231 Difference]: Finished difference. Result has 162 places, 670 transitions, 13649 flow [2023-09-01 02:35:02,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=11193, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=479, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=13649, PETRI_PLACES=162, PETRI_TRANSITIONS=670} [2023-09-01 02:35:02,096 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 83 predicate places. [2023-09-01 02:35:02,096 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 670 transitions, 13649 flow [2023-09-01 02:35:02,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:02,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:35:02,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:35:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 02:35:02,097 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:35:02,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:35:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -466642623, now seen corresponding path program 17 times [2023-09-01 02:35:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:35:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389700652] [2023-09-01 02:35:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:35:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:35:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:35:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:35:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389700652] [2023-09-01 02:35:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389700652] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:35:02,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:35:02,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:35:02,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960870857] [2023-09-01 02:35:02,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:35:02,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:35:02,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:35:02,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:35:02,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:35:02,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:35:02,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 670 transitions, 13649 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:02,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:35:02,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:35:02,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:35:10,272 INFO L130 PetriNetUnfolder]: 36729/60014 cut-off events. [2023-09-01 02:35:10,273 INFO L131 PetriNetUnfolder]: For 620873/639347 co-relation queries the response was YES. [2023-09-01 02:35:10,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328784 conditions, 60014 events. 36729/60014 cut-off events. For 620873/639347 co-relation queries the response was YES. Maximal size of possible extension queue 2812. Compared 518938 event pairs, 12524 based on Foata normal form. 2816/60800 useless extension candidates. Maximal degree in co-relation 328744. Up to 45414 conditions per place. [2023-09-01 02:35:11,224 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 558 selfloop transitions, 235 changer transitions 3/837 dead transitions. [2023-09-01 02:35:11,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 837 transitions, 17316 flow [2023-09-01 02:35:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:35:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:35:11,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2009 transitions. [2023-09-01 02:35:11,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797039159503343 [2023-09-01 02:35:11,226 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2009 transitions. [2023-09-01 02:35:11,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2009 transitions. [2023-09-01 02:35:11,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:35:11,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2009 transitions. [2023-09-01 02:35:11,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 167.41666666666666) internal successors, (2009), 12 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:11,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:11,230 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:11,230 INFO L175 Difference]: Start difference. First operand has 162 places, 670 transitions, 13649 flow. Second operand 12 states and 2009 transitions. [2023-09-01 02:35:11,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 837 transitions, 17316 flow [2023-09-01 02:35:12,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 837 transitions, 16512 flow, removed 12 selfloop flow, removed 5 redundant places. [2023-09-01 02:35:12,572 INFO L231 Difference]: Finished difference. Result has 169 places, 702 transitions, 14151 flow [2023-09-01 02:35:12,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=12914, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14151, PETRI_PLACES=169, PETRI_TRANSITIONS=702} [2023-09-01 02:35:12,572 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 90 predicate places. [2023-09-01 02:35:12,573 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 702 transitions, 14151 flow [2023-09-01 02:35:12,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:12,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:35:12,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:35:12,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 02:35:12,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:35:12,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:35:12,574 INFO L85 PathProgramCache]: Analyzing trace with hash -370822665, now seen corresponding path program 18 times [2023-09-01 02:35:12,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:35:12,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991764398] [2023-09-01 02:35:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:35:12,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:35:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:35:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:12,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:35:12,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991764398] [2023-09-01 02:35:12,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991764398] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:35:12,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:35:12,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:35:12,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252658441] [2023-09-01 02:35:12,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:35:12,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:35:12,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:35:12,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:35:12,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:35:12,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:35:12,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 702 transitions, 14151 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:12,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:35:12,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:35:12,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:35:21,223 INFO L130 PetriNetUnfolder]: 37222/61116 cut-off events. [2023-09-01 02:35:21,223 INFO L131 PetriNetUnfolder]: For 615546/634476 co-relation queries the response was YES. [2023-09-01 02:35:21,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326817 conditions, 61116 events. 37222/61116 cut-off events. For 615546/634476 co-relation queries the response was YES. Maximal size of possible extension queue 2842. Compared 532921 event pairs, 12570 based on Foata normal form. 2766/61814 useless extension candidates. Maximal degree in co-relation 326776. Up to 46775 conditions per place. [2023-09-01 02:35:22,021 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 589 selfloop transitions, 237 changer transitions 6/873 dead transitions. [2023-09-01 02:35:22,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 873 transitions, 17936 flow [2023-09-01 02:35:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 02:35:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 02:35:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2356 transitions. [2023-09-01 02:35:22,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48219402374130166 [2023-09-01 02:35:22,023 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2356 transitions. [2023-09-01 02:35:22,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2356 transitions. [2023-09-01 02:35:22,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:35:22,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2356 transitions. [2023-09-01 02:35:22,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 168.28571428571428) internal successors, (2356), 14 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:22,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:22,028 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 349.0) internal successors, (5235), 15 states have internal predecessors, (5235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:22,028 INFO L175 Difference]: Start difference. First operand has 169 places, 702 transitions, 14151 flow. Second operand 14 states and 2356 transitions. [2023-09-01 02:35:22,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 873 transitions, 17936 flow [2023-09-01 02:35:23,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 873 transitions, 17522 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 02:35:23,878 INFO L231 Difference]: Finished difference. Result has 176 places, 741 transitions, 15281 flow [2023-09-01 02:35:23,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=13800, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15281, PETRI_PLACES=176, PETRI_TRANSITIONS=741} [2023-09-01 02:35:23,879 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 97 predicate places. [2023-09-01 02:35:23,879 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 741 transitions, 15281 flow [2023-09-01 02:35:23,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:23,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:35:23,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:35:23,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 02:35:23,880 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:35:23,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:35:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -618989777, now seen corresponding path program 19 times [2023-09-01 02:35:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:35:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161671123] [2023-09-01 02:35:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:35:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:35:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:35:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:24,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:35:24,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161671123] [2023-09-01 02:35:24,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161671123] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:35:24,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:35:24,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:35:24,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634271538] [2023-09-01 02:35:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:35:24,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:35:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:35:24,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:35:24,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:35:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:35:24,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 741 transitions, 15281 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:24,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:35:24,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:35:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:35:32,727 INFO L130 PetriNetUnfolder]: 36267/60317 cut-off events. [2023-09-01 02:35:32,727 INFO L131 PetriNetUnfolder]: For 618603/640877 co-relation queries the response was YES. [2023-09-01 02:35:33,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323460 conditions, 60317 events. 36267/60317 cut-off events. For 618603/640877 co-relation queries the response was YES. Maximal size of possible extension queue 2690. Compared 533522 event pairs, 8870 based on Foata normal form. 7838/66223 useless extension candidates. Maximal degree in co-relation 323418. Up to 27009 conditions per place. [2023-09-01 02:35:33,459 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 322 selfloop transitions, 648 changer transitions 11/1022 dead transitions. [2023-09-01 02:35:33,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 1022 transitions, 20755 flow [2023-09-01 02:35:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:35:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:35:33,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2066 transitions. [2023-09-01 02:35:33,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4933142311365807 [2023-09-01 02:35:33,461 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2066 transitions. [2023-09-01 02:35:33,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2066 transitions. [2023-09-01 02:35:33,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:35:33,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2066 transitions. [2023-09-01 02:35:33,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 172.16666666666666) internal successors, (2066), 12 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:33,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:33,465 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 349.0) internal successors, (4537), 13 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:33,465 INFO L175 Difference]: Start difference. First operand has 176 places, 741 transitions, 15281 flow. Second operand 12 states and 2066 transitions. [2023-09-01 02:35:33,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 1022 transitions, 20755 flow [2023-09-01 02:35:35,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 1022 transitions, 20469 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 02:35:35,924 INFO L231 Difference]: Finished difference. Result has 183 places, 832 transitions, 18341 flow [2023-09-01 02:35:35,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=14992, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=549, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=18341, PETRI_PLACES=183, PETRI_TRANSITIONS=832} [2023-09-01 02:35:35,925 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 104 predicate places. [2023-09-01 02:35:35,925 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 832 transitions, 18341 flow [2023-09-01 02:35:35,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:35,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:35:35,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:35:35,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 02:35:35,926 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:35:35,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:35:35,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1438801291, now seen corresponding path program 20 times [2023-09-01 02:35:35,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:35:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707785982] [2023-09-01 02:35:35,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:35:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:35:35,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:35:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:36,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:35:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707785982] [2023-09-01 02:35:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707785982] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:35:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:35:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:35:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771436626] [2023-09-01 02:35:36,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:35:36,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:35:36,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:35:36,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:35:36,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:35:36,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:35:36,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 832 transitions, 18341 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:36,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:35:36,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:35:36,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:35:46,980 INFO L130 PetriNetUnfolder]: 41624/69941 cut-off events. [2023-09-01 02:35:46,980 INFO L131 PetriNetUnfolder]: For 748303/757923 co-relation queries the response was YES. [2023-09-01 02:35:47,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369379 conditions, 69941 events. 41624/69941 cut-off events. For 748303/757923 co-relation queries the response was YES. Maximal size of possible extension queue 3186. Compared 644063 event pairs, 7427 based on Foata normal form. 2654/70617 useless extension candidates. Maximal degree in co-relation 369335. Up to 21157 conditions per place. [2023-09-01 02:35:47,838 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 288 selfloop transitions, 656 changer transitions 0/985 dead transitions. [2023-09-01 02:35:47,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 985 transitions, 21375 flow [2023-09-01 02:35:47,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:35:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:35:47,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1725 transitions. [2023-09-01 02:35:47,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49426934097421205 [2023-09-01 02:35:47,840 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1725 transitions. [2023-09-01 02:35:47,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1725 transitions. [2023-09-01 02:35:47,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:35:47,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1725 transitions. [2023-09-01 02:35:47,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 172.5) internal successors, (1725), 10 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:47,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:47,843 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:47,843 INFO L175 Difference]: Start difference. First operand has 183 places, 832 transitions, 18341 flow. Second operand 10 states and 1725 transitions. [2023-09-01 02:35:47,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 985 transitions, 21375 flow [2023-09-01 02:35:50,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 985 transitions, 21100 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-09-01 02:35:50,869 INFO L231 Difference]: Finished difference. Result has 188 places, 852 transitions, 20177 flow [2023-09-01 02:35:50,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=18078, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=642, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20177, PETRI_PLACES=188, PETRI_TRANSITIONS=852} [2023-09-01 02:35:50,870 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 109 predicate places. [2023-09-01 02:35:50,870 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 852 transitions, 20177 flow [2023-09-01 02:35:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:50,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:35:50,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:35:50,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 02:35:50,871 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:35:50,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:35:50,872 INFO L85 PathProgramCache]: Analyzing trace with hash -654294375, now seen corresponding path program 21 times [2023-09-01 02:35:50,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:35:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964093134] [2023-09-01 02:35:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:35:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:35:50,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:35:51,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:51,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:35:51,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964093134] [2023-09-01 02:35:51,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964093134] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:35:51,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:35:51,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:35:51,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562116197] [2023-09-01 02:35:51,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:35:51,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:35:51,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:35:51,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:35:51,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:35:51,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:35:51,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 852 transitions, 20177 flow. Second operand has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:51,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:35:51,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:35:51,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:36:02,476 INFO L130 PetriNetUnfolder]: 41277/69719 cut-off events. [2023-09-01 02:36:02,477 INFO L131 PetriNetUnfolder]: For 938920/952006 co-relation queries the response was YES. [2023-09-01 02:36:03,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397877 conditions, 69719 events. 41277/69719 cut-off events. For 938920/952006 co-relation queries the response was YES. Maximal size of possible extension queue 3118. Compared 645989 event pairs, 7217 based on Foata normal form. 2908/70769 useless extension candidates. Maximal degree in co-relation 397831. Up to 21150 conditions per place. [2023-09-01 02:36:03,318 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 266 selfloop transitions, 664 changer transitions 0/971 dead transitions. [2023-09-01 02:36:03,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 971 transitions, 23064 flow [2023-09-01 02:36:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:36:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:36:03,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1380 transitions. [2023-09-01 02:36:03,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49426934097421205 [2023-09-01 02:36:03,320 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1380 transitions. [2023-09-01 02:36:03,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1380 transitions. [2023-09-01 02:36:03,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:36:03,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1380 transitions. [2023-09-01 02:36:03,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.5) internal successors, (1380), 8 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:03,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:03,323 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 349.0) internal successors, (3141), 9 states have internal predecessors, (3141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:03,323 INFO L175 Difference]: Start difference. First operand has 188 places, 852 transitions, 20177 flow. Second operand 8 states and 1380 transitions. [2023-09-01 02:36:03,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 971 transitions, 23064 flow [2023-09-01 02:36:06,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 971 transitions, 22477 flow, removed 86 selfloop flow, removed 7 redundant places. [2023-09-01 02:36:06,942 INFO L231 Difference]: Finished difference. Result has 190 places, 860 transitions, 21534 flow [2023-09-01 02:36:06,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=19630, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=852, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21534, PETRI_PLACES=190, PETRI_TRANSITIONS=860} [2023-09-01 02:36:06,943 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 111 predicate places. [2023-09-01 02:36:06,944 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 860 transitions, 21534 flow [2023-09-01 02:36:06,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 160.14285714285714) internal successors, (1121), 7 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:06,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:36:06,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:36:06,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 02:36:06,944 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:36:06,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:36:06,945 INFO L85 PathProgramCache]: Analyzing trace with hash -304136199, now seen corresponding path program 22 times [2023-09-01 02:36:06,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:36:06,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362738748] [2023-09-01 02:36:06,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:36:06,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:36:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:36:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:36:07,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:36:07,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362738748] [2023-09-01 02:36:07,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362738748] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:36:07,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:36:07,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:36:07,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297153651] [2023-09-01 02:36:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:36:07,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:36:07,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:36:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:36:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:36:07,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:36:07,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 860 transitions, 21534 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:07,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:36:07,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:36:07,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:36:18,330 INFO L130 PetriNetUnfolder]: 38983/65658 cut-off events. [2023-09-01 02:36:18,330 INFO L131 PetriNetUnfolder]: For 940639/969123 co-relation queries the response was YES. [2023-09-01 02:36:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394852 conditions, 65658 events. 38983/65658 cut-off events. For 940639/969123 co-relation queries the response was YES. Maximal size of possible extension queue 2704. Compared 596380 event pairs, 4408 based on Foata normal form. 9232/73464 useless extension candidates. Maximal degree in co-relation 394805. Up to 19627 conditions per place. [2023-09-01 02:36:19,158 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 236 selfloop transitions, 869 changer transitions 16/1162 dead transitions. [2023-09-01 02:36:19,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1162 transitions, 28617 flow [2023-09-01 02:36:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:36:19,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:36:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1734 transitions. [2023-09-01 02:36:19,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49684813753581664 [2023-09-01 02:36:19,160 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1734 transitions. [2023-09-01 02:36:19,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1734 transitions. [2023-09-01 02:36:19,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:36:19,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1734 transitions. [2023-09-01 02:36:19,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.4) internal successors, (1734), 10 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:19,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:19,163 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:19,163 INFO L175 Difference]: Start difference. First operand has 190 places, 860 transitions, 21534 flow. Second operand 10 states and 1734 transitions. [2023-09-01 02:36:19,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 1162 transitions, 28617 flow [2023-09-01 02:36:22,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 1162 transitions, 28441 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:36:22,325 INFO L231 Difference]: Finished difference. Result has 198 places, 1013 transitions, 27726 flow [2023-09-01 02:36:22,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=20972, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=702, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=27726, PETRI_PLACES=198, PETRI_TRANSITIONS=1013} [2023-09-01 02:36:22,326 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 119 predicate places. [2023-09-01 02:36:22,326 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 1013 transitions, 27726 flow [2023-09-01 02:36:22,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:22,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:36:22,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:36:22,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 02:36:22,327 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:36:22,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:36:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1957954737, now seen corresponding path program 23 times [2023-09-01 02:36:22,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:36:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839252477] [2023-09-01 02:36:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:36:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:36:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:36:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:36:22,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:36:22,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839252477] [2023-09-01 02:36:22,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839252477] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:36:22,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:36:22,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:36:22,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533484782] [2023-09-01 02:36:22,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:36:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:36:22,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:36:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:36:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:36:22,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:36:22,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 1013 transitions, 27726 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:22,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:36:22,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:36:22,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:36:34,880 INFO L130 PetriNetUnfolder]: 37418/64987 cut-off events. [2023-09-01 02:36:34,880 INFO L131 PetriNetUnfolder]: For 1279449/1287072 co-relation queries the response was YES. [2023-09-01 02:36:35,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426963 conditions, 64987 events. 37418/64987 cut-off events. For 1279449/1287072 co-relation queries the response was YES. Maximal size of possible extension queue 2722. Compared 613610 event pairs, 6528 based on Foata normal form. 2058/65639 useless extension candidates. Maximal degree in co-relation 426913. Up to 23766 conditions per place. [2023-09-01 02:36:35,769 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 318 selfloop transitions, 796 changer transitions 2/1157 dead transitions. [2023-09-01 02:36:35,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1157 transitions, 31298 flow [2023-09-01 02:36:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:36:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:36:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1719 transitions. [2023-09-01 02:36:35,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49255014326647567 [2023-09-01 02:36:35,771 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1719 transitions. [2023-09-01 02:36:35,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1719 transitions. [2023-09-01 02:36:35,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:36:35,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1719 transitions. [2023-09-01 02:36:35,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 171.9) internal successors, (1719), 10 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:35,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:35,775 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:35,775 INFO L175 Difference]: Start difference. First operand has 198 places, 1013 transitions, 27726 flow. Second operand 10 states and 1719 transitions. [2023-09-01 02:36:35,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1157 transitions, 31298 flow [2023-09-01 02:36:42,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 1157 transitions, 30288 flow, removed 43 selfloop flow, removed 8 redundant places. [2023-09-01 02:36:42,700 INFO L231 Difference]: Finished difference. Result has 201 places, 1032 transitions, 29105 flow [2023-09-01 02:36:42,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=26743, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1013, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=777, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=29105, PETRI_PLACES=201, PETRI_TRANSITIONS=1032} [2023-09-01 02:36:42,701 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 122 predicate places. [2023-09-01 02:36:42,701 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 1032 transitions, 29105 flow [2023-09-01 02:36:42,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:42,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:36:42,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:36:42,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 02:36:42,702 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:36:42,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:36:42,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1816993693, now seen corresponding path program 24 times [2023-09-01 02:36:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:36:42,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127439166] [2023-09-01 02:36:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:36:42,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:36:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:36:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:36:42,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:36:42,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127439166] [2023-09-01 02:36:42,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127439166] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:36:42,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:36:42,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:36:42,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832913772] [2023-09-01 02:36:42,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:36:42,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:36:42,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:36:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:36:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:36:42,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:36:42,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 1032 transitions, 29105 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:42,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:36:42,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:36:42,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:36:55,789 INFO L130 PetriNetUnfolder]: 36525/62100 cut-off events. [2023-09-01 02:36:55,789 INFO L131 PetriNetUnfolder]: For 1322792/1356276 co-relation queries the response was YES. [2023-09-01 02:36:56,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422339 conditions, 62100 events. 36525/62100 cut-off events. For 1322792/1356276 co-relation queries the response was YES. Maximal size of possible extension queue 2500. Compared 566661 event pairs, 3324 based on Foata normal form. 8622/69480 useless extension candidates. Maximal degree in co-relation 422289. Up to 18072 conditions per place. [2023-09-01 02:36:56,598 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 244 selfloop transitions, 916 changer transitions 4/1205 dead transitions. [2023-09-01 02:36:56,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1205 transitions, 33219 flow [2023-09-01 02:36:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:36:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:36:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1732 transitions. [2023-09-01 02:36:56,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4962750716332378 [2023-09-01 02:36:56,600 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1732 transitions. [2023-09-01 02:36:56,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1732 transitions. [2023-09-01 02:36:56,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:36:56,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1732 transitions. [2023-09-01 02:36:56,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 173.2) internal successors, (1732), 10 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:56,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:56,603 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 349.0) internal successors, (3839), 11 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:56,603 INFO L175 Difference]: Start difference. First operand has 201 places, 1032 transitions, 29105 flow. Second operand 10 states and 1732 transitions. [2023-09-01 02:36:56,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 1205 transitions, 33219 flow [2023-09-01 02:37:02,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1205 transitions, 32029 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-09-01 02:37:02,920 INFO L231 Difference]: Finished difference. Result has 205 places, 1060 transitions, 31033 flow [2023-09-01 02:37:02,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=27900, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1030, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=884, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=31033, PETRI_PLACES=205, PETRI_TRANSITIONS=1060} [2023-09-01 02:37:02,921 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 126 predicate places. [2023-09-01 02:37:02,921 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 1060 transitions, 31033 flow [2023-09-01 02:37:02,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:02,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:37:02,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:37:02,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 02:37:02,922 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:37:02,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:37:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash 351737155, now seen corresponding path program 25 times [2023-09-01 02:37:02,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:37:02,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571991080] [2023-09-01 02:37:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:37:02,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:37:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:37:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:37:03,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:37:03,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571991080] [2023-09-01 02:37:03,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571991080] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:37:03,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:37:03,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:37:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650375036] [2023-09-01 02:37:03,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:37:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:37:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:37:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:37:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:37:03,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:37:03,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1060 transitions, 31033 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:03,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:37:03,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:37:03,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:37:16,393 INFO L130 PetriNetUnfolder]: 37232/63908 cut-off events. [2023-09-01 02:37:16,393 INFO L131 PetriNetUnfolder]: For 1511330/1547322 co-relation queries the response was YES. [2023-09-01 02:37:16,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453024 conditions, 63908 events. 37232/63908 cut-off events. For 1511330/1547322 co-relation queries the response was YES. Maximal size of possible extension queue 2685. Compared 594211 event pairs, 3620 based on Foata normal form. 9104/71700 useless extension candidates. Maximal degree in co-relation 452973. Up to 17012 conditions per place. [2023-09-01 02:37:17,251 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 300 selfloop transitions, 979 changer transitions 13/1333 dead transitions. [2023-09-01 02:37:17,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1333 transitions, 36942 flow [2023-09-01 02:37:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:37:17,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:37:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2238 transitions. [2023-09-01 02:37:17,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4932774961428257 [2023-09-01 02:37:17,257 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2238 transitions. [2023-09-01 02:37:17,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2238 transitions. [2023-09-01 02:37:17,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:37:17,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2238 transitions. [2023-09-01 02:37:17,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.15384615384616) internal successors, (2238), 13 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:17,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:17,261 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:17,262 INFO L175 Difference]: Start difference. First operand has 205 places, 1060 transitions, 31033 flow. Second operand 13 states and 2238 transitions. [2023-09-01 02:37:17,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1333 transitions, 36942 flow [2023-09-01 02:37:24,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 1333 transitions, 35532 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-09-01 02:37:25,004 INFO L231 Difference]: Finished difference. Result has 211 places, 1123 transitions, 33378 flow [2023-09-01 02:37:25,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=29746, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=908, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=33378, PETRI_PLACES=211, PETRI_TRANSITIONS=1123} [2023-09-01 02:37:25,004 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 132 predicate places. [2023-09-01 02:37:25,005 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 1123 transitions, 33378 flow [2023-09-01 02:37:25,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:25,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:37:25,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:37:25,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 02:37:25,005 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:37:25,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:37:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1807635815, now seen corresponding path program 26 times [2023-09-01 02:37:25,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:37:25,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469866426] [2023-09-01 02:37:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:37:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:37:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:37:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:37:25,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:37:25,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469866426] [2023-09-01 02:37:25,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469866426] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:37:25,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:37:25,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:37:25,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468898179] [2023-09-01 02:37:25,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:37:25,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:37:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:37:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:37:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:37:25,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:37:25,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 1123 transitions, 33378 flow. Second operand has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:25,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:37:25,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:37:25,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:37:39,080 INFO L130 PetriNetUnfolder]: 36776/63506 cut-off events. [2023-09-01 02:37:39,081 INFO L131 PetriNetUnfolder]: For 1598115/1633653 co-relation queries the response was YES. [2023-09-01 02:37:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456174 conditions, 63506 events. 36776/63506 cut-off events. For 1598115/1633653 co-relation queries the response was YES. Maximal size of possible extension queue 2735. Compared 595128 event pairs, 3557 based on Foata normal form. 8674/70996 useless extension candidates. Maximal degree in co-relation 456122. Up to 16733 conditions per place. [2023-09-01 02:37:39,943 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 337 selfloop transitions, 1031 changer transitions 8/1417 dead transitions. [2023-09-01 02:37:39,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1417 transitions, 39240 flow [2023-09-01 02:37:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:37:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:37:39,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2923 transitions. [2023-09-01 02:37:39,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4926681274228889 [2023-09-01 02:37:39,946 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2923 transitions. [2023-09-01 02:37:39,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2923 transitions. [2023-09-01 02:37:39,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:37:39,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2923 transitions. [2023-09-01 02:37:39,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:39,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:39,954 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:39,954 INFO L175 Difference]: Start difference. First operand has 211 places, 1123 transitions, 33378 flow. Second operand 17 states and 2923 transitions. [2023-09-01 02:37:39,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 1417 transitions, 39240 flow [2023-09-01 02:37:48,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1417 transitions, 37841 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-09-01 02:37:48,505 INFO L231 Difference]: Finished difference. Result has 222 places, 1177 transitions, 35891 flow [2023-09-01 02:37:48,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=32038, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=974, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=35891, PETRI_PLACES=222, PETRI_TRANSITIONS=1177} [2023-09-01 02:37:48,505 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 143 predicate places. [2023-09-01 02:37:48,506 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 1177 transitions, 35891 flow [2023-09-01 02:37:48,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:48,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:37:48,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:37:48,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-09-01 02:37:48,506 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:37:48,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:37:48,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1781790309, now seen corresponding path program 27 times [2023-09-01 02:37:48,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:37:48,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660110030] [2023-09-01 02:37:48,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:37:48,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:37:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:37:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:37:48,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:37:48,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660110030] [2023-09-01 02:37:48,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660110030] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:37:48,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:37:48,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:37:48,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299465197] [2023-09-01 02:37:48,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:37:48,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:37:48,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:37:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:37:48,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:37:48,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:37:48,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 1177 transitions, 35891 flow. Second operand has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:48,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:37:48,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:37:48,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:38:01,260 INFO L130 PetriNetUnfolder]: 29829/52968 cut-off events. [2023-09-01 02:38:01,260 INFO L131 PetriNetUnfolder]: For 1381885/1406601 co-relation queries the response was YES. [2023-09-01 02:38:01,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393800 conditions, 52968 events. 29829/52968 cut-off events. For 1381885/1406601 co-relation queries the response was YES. Maximal size of possible extension queue 2310. Compared 498635 event pairs, 2795 based on Foata normal form. 7010/59090 useless extension candidates. Maximal degree in co-relation 393745. Up to 12879 conditions per place. [2023-09-01 02:38:01,919 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 303 selfloop transitions, 1205 changer transitions 44/1593 dead transitions. [2023-09-01 02:38:01,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 1593 transitions, 47853 flow [2023-09-01 02:38:01,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 02:38:01,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 02:38:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2759 transitions. [2023-09-01 02:38:01,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49409025787965616 [2023-09-01 02:38:01,921 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2759 transitions. [2023-09-01 02:38:01,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2759 transitions. [2023-09-01 02:38:01,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:38:01,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2759 transitions. [2023-09-01 02:38:01,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.4375) internal successors, (2759), 16 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:01,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 349.0) internal successors, (5933), 17 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:01,926 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 349.0) internal successors, (5933), 17 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:01,926 INFO L175 Difference]: Start difference. First operand has 222 places, 1177 transitions, 35891 flow. Second operand 16 states and 2759 transitions. [2023-09-01 02:38:01,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 1593 transitions, 47853 flow [2023-09-01 02:38:10,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 1593 transitions, 46888 flow, removed 31 selfloop flow, removed 12 redundant places. [2023-09-01 02:38:10,346 INFO L231 Difference]: Finished difference. Result has 227 places, 1352 transitions, 43877 flow [2023-09-01 02:38:10,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=34645, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=999, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=43877, PETRI_PLACES=227, PETRI_TRANSITIONS=1352} [2023-09-01 02:38:10,347 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 148 predicate places. [2023-09-01 02:38:10,347 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 1352 transitions, 43877 flow [2023-09-01 02:38:10,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.6) internal successors, (1586), 10 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:10,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:38:10,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:38:10,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 02:38:10,348 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:38:10,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:38:10,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1370284123, now seen corresponding path program 28 times [2023-09-01 02:38:10,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:38:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891490111] [2023-09-01 02:38:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:38:10,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:38:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:38:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:38:10,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:38:10,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891490111] [2023-09-01 02:38:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891490111] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:38:10,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:38:10,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:38:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286478688] [2023-09-01 02:38:10,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:38:10,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:38:10,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:38:10,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:38:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:38:10,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:38:10,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1352 transitions, 43877 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:10,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:38:10,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:38:10,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:38:24,297 INFO L130 PetriNetUnfolder]: 29829/53116 cut-off events. [2023-09-01 02:38:24,297 INFO L131 PetriNetUnfolder]: For 1439892/1461332 co-relation queries the response was YES. [2023-09-01 02:38:24,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408635 conditions, 53116 events. 29829/53116 cut-off events. For 1439892/1461332 co-relation queries the response was YES. Maximal size of possible extension queue 2359. Compared 501066 event pairs, 2311 based on Foata normal form. 5726/57872 useless extension candidates. Maximal degree in co-relation 408579. Up to 15165 conditions per place. [2023-09-01 02:38:24,991 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 202 selfloop transitions, 1367 changer transitions 18/1628 dead transitions. [2023-09-01 02:38:24,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 1628 transitions, 50385 flow [2023-09-01 02:38:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:38:24,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:38:24,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2244 transitions. [2023-09-01 02:38:24,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945999559180075 [2023-09-01 02:38:24,994 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2244 transitions. [2023-09-01 02:38:24,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2244 transitions. [2023-09-01 02:38:24,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:38:24,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2244 transitions. [2023-09-01 02:38:24,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 172.6153846153846) internal successors, (2244), 13 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:24,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:24,998 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 349.0) internal successors, (4886), 14 states have internal predecessors, (4886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:24,998 INFO L175 Difference]: Start difference. First operand has 227 places, 1352 transitions, 43877 flow. Second operand 13 states and 2244 transitions. [2023-09-01 02:38:24,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 1628 transitions, 50385 flow [2023-09-01 02:38:35,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 1628 transitions, 49657 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-09-01 02:38:35,718 INFO L231 Difference]: Finished difference. Result has 232 places, 1479 transitions, 49788 flow [2023-09-01 02:38:35,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=43176, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=49788, PETRI_PLACES=232, PETRI_TRANSITIONS=1479} [2023-09-01 02:38:35,719 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 153 predicate places. [2023-09-01 02:38:35,719 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 1479 transitions, 49788 flow [2023-09-01 02:38:35,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:35,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:38:35,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:38:35,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 02:38:35,720 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:38:35,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:38:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash 310112935, now seen corresponding path program 29 times [2023-09-01 02:38:35,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:38:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702849452] [2023-09-01 02:38:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:38:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:38:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:38:35,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:38:35,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:38:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702849452] [2023-09-01 02:38:35,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702849452] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:38:35,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:38:35,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 02:38:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605916800] [2023-09-01 02:38:35,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:38:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:38:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:38:35,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:38:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:38:35,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 349 [2023-09-01 02:38:35,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1479 transitions, 49788 flow. Second operand has 11 states, 11 states have (on average 160.27272727272728) internal successors, (1763), 11 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:35,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:38:35,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 349 [2023-09-01 02:38:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:38:52,209 INFO L130 PetriNetUnfolder]: 31840/57099 cut-off events. [2023-09-01 02:38:52,209 INFO L131 PetriNetUnfolder]: For 1880141/1902865 co-relation queries the response was YES. [2023-09-01 02:38:52,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472996 conditions, 57099 events. 31840/57099 cut-off events. For 1880141/1902865 co-relation queries the response was YES. Maximal size of possible extension queue 2702. Compared 550952 event pairs, 2493 based on Foata normal form. 6078/62136 useless extension candidates. Maximal degree in co-relation 472938. Up to 12831 conditions per place. [2023-09-01 02:38:53,003 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 299 selfloop transitions, 1403 changer transitions 174/1917 dead transitions. [2023-09-01 02:38:53,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1917 transitions, 63033 flow [2023-09-01 02:38:53,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 02:38:53,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 02:38:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3495 transitions. [2023-09-01 02:38:53,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007163323782235 [2023-09-01 02:38:53,006 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3495 transitions. [2023-09-01 02:38:53,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3495 transitions. [2023-09-01 02:38:53,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:38:53,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3495 transitions. [2023-09-01 02:38:53,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 174.75) internal successors, (3495), 20 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:53,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:53,012 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:53,012 INFO L175 Difference]: Start difference. First operand has 232 places, 1479 transitions, 49788 flow. Second operand 20 states and 3495 transitions. [2023-09-01 02:38:53,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1917 transitions, 63033 flow [2023-09-01 02:39:08,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1917 transitions, 60550 flow, removed 87 selfloop flow, removed 9 redundant places. [2023-09-01 02:39:08,238 INFO L231 Difference]: Finished difference. Result has 245 places, 1515 transitions, 52106 flow [2023-09-01 02:39:08,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=47571, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=52106, PETRI_PLACES=245, PETRI_TRANSITIONS=1515} [2023-09-01 02:39:08,239 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 166 predicate places. [2023-09-01 02:39:08,239 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 1515 transitions, 52106 flow [2023-09-01 02:39:08,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.27272727272728) internal successors, (1763), 11 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:08,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:39:08,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:39:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-09-01 02:39:08,239 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:39:08,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:39:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 874289847, now seen corresponding path program 30 times [2023-09-01 02:39:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:39:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982032627] [2023-09-01 02:39:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:39:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:39:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:39:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:39:08,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:39:08,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982032627] [2023-09-01 02:39:08,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982032627] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:39:08,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:39:08,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 02:39:08,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29660287] [2023-09-01 02:39:08,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:39:08,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:39:08,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:39:08,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:39:08,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:39:08,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:39:08,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 1515 transitions, 52106 flow. Second operand has 11 states, 11 states have (on average 158.27272727272728) internal successors, (1741), 11 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:08,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:39:08,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:39:08,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:39:25,030 INFO L130 PetriNetUnfolder]: 30626/55775 cut-off events. [2023-09-01 02:39:25,030 INFO L131 PetriNetUnfolder]: For 1844165/1862795 co-relation queries the response was YES. [2023-09-01 02:39:25,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468718 conditions, 55775 events. 30626/55775 cut-off events. For 1844165/1862795 co-relation queries the response was YES. Maximal size of possible extension queue 2700. Compared 547250 event pairs, 2433 based on Foata normal form. 5772/60455 useless extension candidates. Maximal degree in co-relation 468659. Up to 13600 conditions per place. [2023-09-01 02:39:25,829 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 295 selfloop transitions, 1439 changer transitions 83/1858 dead transitions. [2023-09-01 02:39:25,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 1858 transitions, 60321 flow [2023-09-01 02:39:25,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 02:39:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 02:39:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3409 transitions. [2023-09-01 02:39:25,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48839541547277937 [2023-09-01 02:39:25,831 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3409 transitions. [2023-09-01 02:39:25,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3409 transitions. [2023-09-01 02:39:25,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:39:25,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3409 transitions. [2023-09-01 02:39:25,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 170.45) internal successors, (3409), 20 states have internal predecessors, (3409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:25,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:25,837 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:25,837 INFO L175 Difference]: Start difference. First operand has 245 places, 1515 transitions, 52106 flow. Second operand 20 states and 3409 transitions. [2023-09-01 02:39:25,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 1858 transitions, 60321 flow [2023-09-01 02:39:44,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 1858 transitions, 59289 flow, removed 67 selfloop flow, removed 8 redundant places. [2023-09-01 02:39:44,152 INFO L231 Difference]: Finished difference. Result has 259 places, 1551 transitions, 54072 flow [2023-09-01 02:39:44,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=51095, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1326, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=54072, PETRI_PLACES=259, PETRI_TRANSITIONS=1551} [2023-09-01 02:39:44,153 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 180 predicate places. [2023-09-01 02:39:44,153 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 1551 transitions, 54072 flow [2023-09-01 02:39:44,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 158.27272727272728) internal successors, (1741), 11 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:44,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:39:44,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:39:44,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-09-01 02:39:44,154 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:39:44,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:39:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1429771985, now seen corresponding path program 31 times [2023-09-01 02:39:44,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:39:44,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952019470] [2023-09-01 02:39:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:39:44,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:39:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:39:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:39:44,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:39:44,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952019470] [2023-09-01 02:39:44,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952019470] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:39:44,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:39:44,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 02:39:44,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670496732] [2023-09-01 02:39:44,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:39:44,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:39:44,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:39:44,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:39:44,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:39:44,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 349 [2023-09-01 02:39:44,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 1551 transitions, 54072 flow. Second operand has 11 states, 11 states have (on average 155.36363636363637) internal successors, (1709), 11 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:39:44,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:39:44,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 349 [2023-09-01 02:39:44,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:40:03,133 INFO L130 PetriNetUnfolder]: 33711/59832 cut-off events. [2023-09-01 02:40:03,134 INFO L131 PetriNetUnfolder]: For 2101185/2116797 co-relation queries the response was YES. [2023-09-01 02:40:03,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509353 conditions, 59832 events. 33711/59832 cut-off events. For 2101185/2116797 co-relation queries the response was YES. Maximal size of possible extension queue 2795. Compared 574435 event pairs, 2713 based on Foata normal form. 4938/63684 useless extension candidates. Maximal degree in co-relation 509293. Up to 15129 conditions per place. [2023-09-01 02:40:04,172 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 314 selfloop transitions, 1476 changer transitions 115/1945 dead transitions. [2023-09-01 02:40:04,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1945 transitions, 63751 flow [2023-09-01 02:40:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 02:40:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 02:40:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3380 transitions. [2023-09-01 02:40:04,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48424068767908307 [2023-09-01 02:40:04,175 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3380 transitions. [2023-09-01 02:40:04,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3380 transitions. [2023-09-01 02:40:04,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:40:04,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3380 transitions. [2023-09-01 02:40:04,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 169.0) internal successors, (3380), 20 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:04,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:04,181 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:04,181 INFO L175 Difference]: Start difference. First operand has 259 places, 1551 transitions, 54072 flow. Second operand 20 states and 3380 transitions. [2023-09-01 02:40:04,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1945 transitions, 63751 flow [2023-09-01 02:40:25,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 1945 transitions, 63431 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-09-01 02:40:25,965 INFO L231 Difference]: Finished difference. Result has 270 places, 1587 transitions, 56798 flow [2023-09-01 02:40:25,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=53708, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=56798, PETRI_PLACES=270, PETRI_TRANSITIONS=1587} [2023-09-01 02:40:25,966 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 191 predicate places. [2023-09-01 02:40:25,966 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 1587 transitions, 56798 flow [2023-09-01 02:40:25,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 155.36363636363637) internal successors, (1709), 11 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:25,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:40:25,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:40:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-09-01 02:40:25,967 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:40:25,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:40:25,967 INFO L85 PathProgramCache]: Analyzing trace with hash 659916601, now seen corresponding path program 32 times [2023-09-01 02:40:25,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:40:25,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60411026] [2023-09-01 02:40:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:40:25,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:40:25,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:40:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:40:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:40:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60411026] [2023-09-01 02:40:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60411026] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:40:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:40:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 02:40:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157057752] [2023-09-01 02:40:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:40:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:40:26,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:40:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:40:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:40:26,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:40:26,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1587 transitions, 56798 flow. Second operand has 11 states, 11 states have (on average 158.27272727272728) internal successors, (1741), 11 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:26,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:40:26,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:40:26,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:40:41,834 INFO L130 PetriNetUnfolder]: 25578/47967 cut-off events. [2023-09-01 02:40:41,835 INFO L131 PetriNetUnfolder]: For 1982945/1999495 co-relation queries the response was YES. [2023-09-01 02:40:42,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446616 conditions, 47967 events. 25578/47967 cut-off events. For 1982945/1999495 co-relation queries the response was YES. Maximal size of possible extension queue 2634. Compared 478862 event pairs, 1894 based on Foata normal form. 5566/52897 useless extension candidates. Maximal degree in co-relation 446553. Up to 11138 conditions per place. [2023-09-01 02:40:42,509 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 291 selfloop transitions, 1505 changer transitions 192/2028 dead transitions. [2023-09-01 02:40:42,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 2028 transitions, 69750 flow [2023-09-01 02:40:42,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 02:40:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 02:40:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3423 transitions. [2023-09-01 02:40:42,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49040114613180513 [2023-09-01 02:40:42,512 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3423 transitions. [2023-09-01 02:40:42,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3423 transitions. [2023-09-01 02:40:42,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:40:42,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3423 transitions. [2023-09-01 02:40:42,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.15) internal successors, (3423), 20 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:42,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:42,518 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 349.0) internal successors, (7329), 21 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:40:42,518 INFO L175 Difference]: Start difference. First operand has 270 places, 1587 transitions, 56798 flow. Second operand 20 states and 3423 transitions. [2023-09-01 02:40:42,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 2028 transitions, 69750 flow [2023-09-01 02:41:02,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 2028 transitions, 69390 flow, removed 37 selfloop flow, removed 10 redundant places. [2023-09-01 02:41:02,304 INFO L231 Difference]: Finished difference. Result has 284 places, 1613 transitions, 60074 flow [2023-09-01 02:41:02,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=55948, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=60074, PETRI_PLACES=284, PETRI_TRANSITIONS=1613} [2023-09-01 02:41:02,305 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 205 predicate places. [2023-09-01 02:41:02,305 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 1613 transitions, 60074 flow [2023-09-01 02:41:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 158.27272727272728) internal successors, (1741), 11 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:41:02,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:41:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-09-01 02:41:02,306 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:41:02,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:41:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1980763377, now seen corresponding path program 33 times [2023-09-01 02:41:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:41:02,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390313115] [2023-09-01 02:41:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:41:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:41:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:41:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:41:02,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:41:02,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390313115] [2023-09-01 02:41:02,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390313115] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:41:02,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:41:02,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:41:02,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356420887] [2023-09-01 02:41:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:41:02,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:41:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:41:02,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:41:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:41:02,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:41:02,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 1613 transitions, 60074 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:02,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:41:02,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:41:02,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:41:16,378 INFO L130 PetriNetUnfolder]: 21901/41500 cut-off events. [2023-09-01 02:41:16,378 INFO L131 PetriNetUnfolder]: For 1990293/1999924 co-relation queries the response was YES. [2023-09-01 02:41:16,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404731 conditions, 41500 events. 21901/41500 cut-off events. For 1990293/1999924 co-relation queries the response was YES. Maximal size of possible extension queue 2292. Compared 410138 event pairs, 3714 based on Foata normal form. 2298/43113 useless extension candidates. Maximal degree in co-relation 404663. Up to 12410 conditions per place. [2023-09-01 02:41:16,920 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 550 selfloop transitions, 1175 changer transitions 0/1765 dead transitions. [2023-09-01 02:41:16,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1765 transitions, 64970 flow [2023-09-01 02:41:16,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:41:16,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:41:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2876 transitions. [2023-09-01 02:41:16,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4847463340637114 [2023-09-01 02:41:16,926 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2876 transitions. [2023-09-01 02:41:16,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2876 transitions. [2023-09-01 02:41:16,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:41:16,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2876 transitions. [2023-09-01 02:41:16,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 169.1764705882353) internal successors, (2876), 17 states have internal predecessors, (2876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:16,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:16,931 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 349.0) internal successors, (6282), 18 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:16,931 INFO L175 Difference]: Start difference. First operand has 284 places, 1613 transitions, 60074 flow. Second operand 17 states and 2876 transitions. [2023-09-01 02:41:16,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1765 transitions, 64970 flow [2023-09-01 02:41:30,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1765 transitions, 64738 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-09-01 02:41:30,527 INFO L231 Difference]: Finished difference. Result has 290 places, 1640 transitions, 62757 flow [2023-09-01 02:41:30,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=59846, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=62757, PETRI_PLACES=290, PETRI_TRANSITIONS=1640} [2023-09-01 02:41:30,529 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 211 predicate places. [2023-09-01 02:41:30,529 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 1640 transitions, 62757 flow [2023-09-01 02:41:30,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:30,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:41:30,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:41:30,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-09-01 02:41:30,529 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:41:30,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:41:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1532766703, now seen corresponding path program 34 times [2023-09-01 02:41:30,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:41:30,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878597993] [2023-09-01 02:41:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:41:30,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:41:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:41:30,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:41:30,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:41:30,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878597993] [2023-09-01 02:41:30,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878597993] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:41:30,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:41:30,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 02:41:30,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792589754] [2023-09-01 02:41:30,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:41:30,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:41:30,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:41:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:41:30,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:41:30,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:41:30,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 1640 transitions, 62757 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:30,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:41:30,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:41:30,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:41:46,020 INFO L130 PetriNetUnfolder]: 22292/42515 cut-off events. [2023-09-01 02:41:46,020 INFO L131 PetriNetUnfolder]: For 2180099/2189757 co-relation queries the response was YES. [2023-09-01 02:41:46,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424644 conditions, 42515 events. 22292/42515 cut-off events. For 2180099/2189757 co-relation queries the response was YES. Maximal size of possible extension queue 2390. Compared 424937 event pairs, 3722 based on Foata normal form. 2512/44342 useless extension candidates. Maximal degree in co-relation 424575. Up to 12428 conditions per place. [2023-09-01 02:41:46,588 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 626 selfloop transitions, 1248 changer transitions 48/1962 dead transitions. [2023-09-01 02:41:46,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1962 transitions, 71951 flow [2023-09-01 02:41:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-09-01 02:41:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-09-01 02:41:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4687 transitions. [2023-09-01 02:41:46,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796356938190749 [2023-09-01 02:41:46,591 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4687 transitions. [2023-09-01 02:41:46,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4687 transitions. [2023-09-01 02:41:46,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:41:46,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4687 transitions. [2023-09-01 02:41:46,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 167.39285714285714) internal successors, (4687), 28 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:46,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 349.0) internal successors, (10121), 29 states have internal predecessors, (10121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:46,598 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 349.0) internal successors, (10121), 29 states have internal predecessors, (10121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:41:46,598 INFO L175 Difference]: Start difference. First operand has 290 places, 1640 transitions, 62757 flow. Second operand 28 states and 4687 transitions. [2023-09-01 02:41:46,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 1962 transitions, 71951 flow [2023-09-01 02:42:01,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 1962 transitions, 69761 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-09-01 02:42:01,216 INFO L231 Difference]: Finished difference. Result has 310 places, 1713 transitions, 64883 flow [2023-09-01 02:42:01,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=60751, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=64883, PETRI_PLACES=310, PETRI_TRANSITIONS=1713} [2023-09-01 02:42:01,217 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 231 predicate places. [2023-09-01 02:42:01,217 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 1713 transitions, 64883 flow [2023-09-01 02:42:01,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:01,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:42:01,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:42:01,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-09-01 02:42:01,218 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:42:01,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:42:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash 104408471, now seen corresponding path program 35 times [2023-09-01 02:42:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:42:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220359967] [2023-09-01 02:42:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:42:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:42:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:42:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:42:01,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:42:01,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220359967] [2023-09-01 02:42:01,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220359967] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:42:01,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:42:01,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 02:42:01,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759161204] [2023-09-01 02:42:01,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:42:01,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:42:01,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:42:01,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:42:01,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:42:01,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:42:01,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 1713 transitions, 64883 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:01,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:42:01,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:42:01,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:42:16,825 INFO L130 PetriNetUnfolder]: 22587/43224 cut-off events. [2023-09-01 02:42:16,825 INFO L131 PetriNetUnfolder]: For 2340983/2349449 co-relation queries the response was YES. [2023-09-01 02:42:17,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435931 conditions, 43224 events. 22587/43224 cut-off events. For 2340983/2349449 co-relation queries the response was YES. Maximal size of possible extension queue 2432. Compared 434267 event pairs, 6802 based on Foata normal form. 386/42963 useless extension candidates. Maximal degree in co-relation 435860. Up to 30974 conditions per place. [2023-09-01 02:42:17,422 INFO L137 encePairwiseOnDemand]: 338/349 looper letters, 1371 selfloop transitions, 450 changer transitions 88/1949 dead transitions. [2023-09-01 02:42:17,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 1949 transitions, 73430 flow [2023-09-01 02:42:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 02:42:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 02:42:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3834 transitions. [2023-09-01 02:42:17,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47763797184502305 [2023-09-01 02:42:17,424 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3834 transitions. [2023-09-01 02:42:17,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3834 transitions. [2023-09-01 02:42:17,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:42:17,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3834 transitions. [2023-09-01 02:42:17,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 166.69565217391303) internal successors, (3834), 23 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:17,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 349.0) internal successors, (8376), 24 states have internal predecessors, (8376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:17,430 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 349.0) internal successors, (8376), 24 states have internal predecessors, (8376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:17,430 INFO L175 Difference]: Start difference. First operand has 310 places, 1713 transitions, 64883 flow. Second operand 23 states and 3834 transitions. [2023-09-01 02:42:17,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 1949 transitions, 73430 flow [2023-09-01 02:42:32,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 1949 transitions, 73098 flow, removed 0 selfloop flow, removed 10 redundant places. [2023-09-01 02:42:32,527 INFO L231 Difference]: Finished difference. Result has 321 places, 1731 transitions, 65610 flow [2023-09-01 02:42:32,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=64571, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=65610, PETRI_PLACES=321, PETRI_TRANSITIONS=1731} [2023-09-01 02:42:32,528 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 242 predicate places. [2023-09-01 02:42:32,528 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 1731 transitions, 65610 flow [2023-09-01 02:42:32,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:32,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:42:32,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:42:32,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-09-01 02:42:32,529 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:42:32,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:42:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1577575673, now seen corresponding path program 36 times [2023-09-01 02:42:32,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:42:32,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094042906] [2023-09-01 02:42:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:42:32,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:42:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:42:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:42:32,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:42:32,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094042906] [2023-09-01 02:42:32,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094042906] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:42:32,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:42:32,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 02:42:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520372696] [2023-09-01 02:42:32,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:42:32,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:42:32,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:42:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:42:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:42:32,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:42:32,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 1731 transitions, 65610 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:32,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:42:32,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:42:32,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:42:48,846 INFO L130 PetriNetUnfolder]: 22492/43179 cut-off events. [2023-09-01 02:42:48,846 INFO L131 PetriNetUnfolder]: For 2427790/2436194 co-relation queries the response was YES. [2023-09-01 02:42:49,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439653 conditions, 43179 events. 22492/43179 cut-off events. For 2427790/2436194 co-relation queries the response was YES. Maximal size of possible extension queue 2447. Compared 435870 event pairs, 6700 based on Foata normal form. 506/43038 useless extension candidates. Maximal degree in co-relation 439581. Up to 30361 conditions per place. [2023-09-01 02:42:49,515 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 1300 selfloop transitions, 609 changer transitions 11/1960 dead transitions. [2023-09-01 02:42:49,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1960 transitions, 74122 flow [2023-09-01 02:42:49,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-09-01 02:42:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-09-01 02:42:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4793 transitions. [2023-09-01 02:42:49,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47356980535520204 [2023-09-01 02:42:49,519 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4793 transitions. [2023-09-01 02:42:49,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4793 transitions. [2023-09-01 02:42:49,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:42:49,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4793 transitions. [2023-09-01 02:42:49,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 165.27586206896552) internal successors, (4793), 29 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:49,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 349.0) internal successors, (10470), 30 states have internal predecessors, (10470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:49,526 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 349.0) internal successors, (10470), 30 states have internal predecessors, (10470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:42:49,527 INFO L175 Difference]: Start difference. First operand has 321 places, 1731 transitions, 65610 flow. Second operand 29 states and 4793 transitions. [2023-09-01 02:42:49,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1960 transitions, 74122 flow [2023-09-01 02:43:05,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 1960 transitions, 73185 flow, removed 40 selfloop flow, removed 17 redundant places. [2023-09-01 02:43:05,941 INFO L231 Difference]: Finished difference. Result has 332 places, 1793 transitions, 68510 flow [2023-09-01 02:43:05,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=64750, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=541, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=68510, PETRI_PLACES=332, PETRI_TRANSITIONS=1793} [2023-09-01 02:43:05,942 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 253 predicate places. [2023-09-01 02:43:05,942 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 1793 transitions, 68510 flow [2023-09-01 02:43:05,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:05,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:43:05,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:43:05,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-09-01 02:43:05,943 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:43:05,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:43:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2033933109, now seen corresponding path program 37 times [2023-09-01 02:43:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:43:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143055293] [2023-09-01 02:43:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:43:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:43:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:43:06,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:43:06,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:43:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143055293] [2023-09-01 02:43:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143055293] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:43:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:43:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 02:43:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741918056] [2023-09-01 02:43:06,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:43:06,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:43:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:43:06,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:43:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:43:06,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:43:06,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 1793 transitions, 68510 flow. Second operand has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:06,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:43:06,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:43:06,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:43:23,436 INFO L130 PetriNetUnfolder]: 23941/45936 cut-off events. [2023-09-01 02:43:23,436 INFO L131 PetriNetUnfolder]: For 2620663/2629206 co-relation queries the response was YES. [2023-09-01 02:43:24,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470547 conditions, 45936 events. 23941/45936 cut-off events. For 2620663/2629206 co-relation queries the response was YES. Maximal size of possible extension queue 2615. Compared 468339 event pairs, 6216 based on Foata normal form. 1336/46552 useless extension candidates. Maximal degree in co-relation 470473. Up to 25696 conditions per place. [2023-09-01 02:43:24,299 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 1064 selfloop transitions, 934 changer transitions 7/2045 dead transitions. [2023-09-01 02:43:24,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 2045 transitions, 77483 flow [2023-09-01 02:43:24,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 02:43:24,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 02:43:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4328 transitions. [2023-09-01 02:43:24,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476967158915583 [2023-09-01 02:43:24,302 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4328 transitions. [2023-09-01 02:43:24,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4328 transitions. [2023-09-01 02:43:24,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:43:24,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4328 transitions. [2023-09-01 02:43:24,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 166.46153846153845) internal successors, (4328), 26 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:24,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 349.0) internal successors, (9423), 27 states have internal predecessors, (9423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:24,309 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 349.0) internal successors, (9423), 27 states have internal predecessors, (9423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:24,309 INFO L175 Difference]: Start difference. First operand has 332 places, 1793 transitions, 68510 flow. Second operand 26 states and 4328 transitions. [2023-09-01 02:43:24,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 2045 transitions, 77483 flow [2023-09-01 02:43:42,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 2045 transitions, 76826 flow, removed 46 selfloop flow, removed 16 redundant places. [2023-09-01 02:43:42,739 INFO L231 Difference]: Finished difference. Result has 345 places, 1872 transitions, 73788 flow [2023-09-01 02:43:42,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=67855, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=855, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=863, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=73788, PETRI_PLACES=345, PETRI_TRANSITIONS=1872} [2023-09-01 02:43:42,741 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 266 predicate places. [2023-09-01 02:43:42,741 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 1872 transitions, 73788 flow [2023-09-01 02:43:42,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.0) internal successors, (1896), 12 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:42,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:43:42,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:43:42,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-09-01 02:43:42,741 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:43:42,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:43:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash -138337493, now seen corresponding path program 38 times [2023-09-01 02:43:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:43:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592978314] [2023-09-01 02:43:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:43:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:43:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:43:42,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:43:42,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:43:42,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592978314] [2023-09-01 02:43:42,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592978314] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:43:42,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:43:42,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 02:43:42,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501785308] [2023-09-01 02:43:42,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:43:42,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:43:42,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:43:42,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:43:42,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:43:42,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 349 [2023-09-01 02:43:42,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 1872 transitions, 73788 flow. Second operand has 11 states, 11 states have (on average 160.27272727272728) internal successors, (1763), 11 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:43:42,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:43:42,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 349 [2023-09-01 02:43:42,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:44:01,018 INFO L130 PetriNetUnfolder]: 23757/45564 cut-off events. [2023-09-01 02:44:01,018 INFO L131 PetriNetUnfolder]: For 2722757/2733498 co-relation queries the response was YES. [2023-09-01 02:44:01,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479796 conditions, 45564 events. 23757/45564 cut-off events. For 2722757/2733498 co-relation queries the response was YES. Maximal size of possible extension queue 2570. Compared 463943 event pairs, 4534 based on Foata normal form. 2384/47350 useless extension candidates. Maximal degree in co-relation 479717. Up to 12813 conditions per place. [2023-09-01 02:44:01,664 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 598 selfloop transitions, 1363 changer transitions 10/2011 dead transitions. [2023-09-01 02:44:01,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 2011 transitions, 79246 flow [2023-09-01 02:44:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:44:01,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:44:01,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2605 transitions. [2023-09-01 02:44:01,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976122254059217 [2023-09-01 02:44:01,666 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2605 transitions. [2023-09-01 02:44:01,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2605 transitions. [2023-09-01 02:44:01,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:44:01,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2605 transitions. [2023-09-01 02:44:01,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 173.66666666666666) internal successors, (2605), 15 states have internal predecessors, (2605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:01,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 349.0) internal successors, (5584), 16 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:01,671 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 349.0) internal successors, (5584), 16 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:01,671 INFO L175 Difference]: Start difference. First operand has 345 places, 1872 transitions, 73788 flow. Second operand 15 states and 2605 transitions. [2023-09-01 02:44:01,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 2011 transitions, 79246 flow [2023-09-01 02:44:23,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 2011 transitions, 78832 flow, removed 10 selfloop flow, removed 17 redundant places. [2023-09-01 02:44:23,592 INFO L231 Difference]: Finished difference. Result has 344 places, 1875 transitions, 76123 flow [2023-09-01 02:44:23,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=73374, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1350, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=76123, PETRI_PLACES=344, PETRI_TRANSITIONS=1875} [2023-09-01 02:44:23,594 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 265 predicate places. [2023-09-01 02:44:23,594 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 1875 transitions, 76123 flow [2023-09-01 02:44:23,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 160.27272727272728) internal successors, (1763), 11 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:23,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:44:23,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:44:23,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-09-01 02:44:23,595 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:44:23,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:44:23,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1696622459, now seen corresponding path program 39 times [2023-09-01 02:44:23,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:44:23,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625705163] [2023-09-01 02:44:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:44:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:44:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:44:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:44:23,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:44:23,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625705163] [2023-09-01 02:44:23,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625705163] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:44:23,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:44:23,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 02:44:23,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79022704] [2023-09-01 02:44:23,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:44:23,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:44:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:44:23,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:44:23,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:44:23,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 349 [2023-09-01 02:44:23,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 1875 transitions, 76123 flow. Second operand has 12 states, 12 states have (on average 155.08333333333334) internal successors, (1861), 12 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:23,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:44:23,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 349 [2023-09-01 02:44:23,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:44:46,200 INFO L130 PetriNetUnfolder]: 28405/52250 cut-off events. [2023-09-01 02:44:46,201 INFO L131 PetriNetUnfolder]: For 3179817/3188643 co-relation queries the response was YES. [2023-09-01 02:44:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550432 conditions, 52250 events. 28405/52250 cut-off events. For 3179817/3188643 co-relation queries the response was YES. Maximal size of possible extension queue 2811. Compared 517491 event pairs, 5134 based on Foata normal form. 2388/53808 useless extension candidates. Maximal degree in co-relation 550350. Up to 14852 conditions per place. [2023-09-01 02:44:47,023 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 605 selfloop transitions, 1421 changer transitions 34/2097 dead transitions. [2023-09-01 02:44:47,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 2097 transitions, 82857 flow [2023-09-01 02:44:47,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-09-01 02:44:47,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-09-01 02:44:47,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4592 transitions. [2023-09-01 02:44:47,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699140401146132 [2023-09-01 02:44:47,026 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4592 transitions. [2023-09-01 02:44:47,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4592 transitions. [2023-09-01 02:44:47,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:44:47,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4592 transitions. [2023-09-01 02:44:47,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 164.0) internal successors, (4592), 28 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:47,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 349.0) internal successors, (10121), 29 states have internal predecessors, (10121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:47,033 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 349.0) internal successors, (10121), 29 states have internal predecessors, (10121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:44:47,033 INFO L175 Difference]: Start difference. First operand has 344 places, 1875 transitions, 76123 flow. Second operand 28 states and 4592 transitions. [2023-09-01 02:44:47,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 2097 transitions, 82857 flow [2023-09-01 02:45:17,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 2097 transitions, 82051 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-09-01 02:45:17,555 INFO L231 Difference]: Finished difference. Result has 362 places, 1878 transitions, 78066 flow [2023-09-01 02:45:17,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=75327, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1875, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1392, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=78066, PETRI_PLACES=362, PETRI_TRANSITIONS=1878} [2023-09-01 02:45:17,556 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 283 predicate places. [2023-09-01 02:45:17,557 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 1878 transitions, 78066 flow [2023-09-01 02:45:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 155.08333333333334) internal successors, (1861), 12 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:17,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:45:17,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:45:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-09-01 02:45:17,557 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2023-09-01 02:45:17,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:45:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1182945157, now seen corresponding path program 40 times [2023-09-01 02:45:17,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:45:17,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953091771] [2023-09-01 02:45:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:45:17,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:45:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:45:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:45:17,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:45:17,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953091771] [2023-09-01 02:45:17,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953091771] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:45:17,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:45:17,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:45:17,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890005444] [2023-09-01 02:45:17,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:45:17,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:45:17,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:45:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:45:17,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:45:17,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 349 [2023-09-01 02:45:17,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 1878 transitions, 78066 flow. Second operand has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:17,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:45:17,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 349 [2023-09-01 02:45:17,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:45:36,748 INFO L130 PetriNetUnfolder]: 23538/45155 cut-off events. [2023-09-01 02:45:36,749 INFO L131 PetriNetUnfolder]: For 3063430/3074312 co-relation queries the response was YES. [2023-09-01 02:45:37,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499987 conditions, 45155 events. 23538/45155 cut-off events. For 3063430/3074312 co-relation queries the response was YES. Maximal size of possible extension queue 2566. Compared 459892 event pairs, 4086 based on Foata normal form. 2586/47123 useless extension candidates. Maximal degree in co-relation 499905. Up to 12452 conditions per place. [2023-09-01 02:45:37,563 INFO L137 encePairwiseOnDemand]: 337/349 looper letters, 523 selfloop transitions, 1421 changer transitions 4/1986 dead transitions. [2023-09-01 02:45:37,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1986 transitions, 82945 flow [2023-09-01 02:45:37,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:45:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:45:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2540 transitions. [2023-09-01 02:45:37,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48519579751671443 [2023-09-01 02:45:37,565 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2540 transitions. [2023-09-01 02:45:37,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2540 transitions. [2023-09-01 02:45:37,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:45:37,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2540 transitions. [2023-09-01 02:45:37,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 169.33333333333334) internal successors, (2540), 15 states have internal predecessors, (2540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:37,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 349.0) internal successors, (5584), 16 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:37,569 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 349.0) internal successors, (5584), 16 states have internal predecessors, (5584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:45:37,569 INFO L175 Difference]: Start difference. First operand has 362 places, 1878 transitions, 78066 flow. Second operand 15 states and 2540 transitions. [2023-09-01 02:45:37,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 1986 transitions, 82945 flow Killed by 15