./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:14:35,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:14:35,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:14:35,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:14:35,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:14:35,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:14:35,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:14:35,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:14:35,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:14:35,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:14:35,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:14:35,627 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:14:35,627 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:14:35,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:14:35,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:14:35,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:14:35,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:14:35,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:14:35,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:14:35,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:14:35,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:14:35,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:14:35,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:14:35,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:14:35,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:14:35,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:14:35,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:14:35,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:14:35,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:14:35,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:14:35,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:14:35,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:14:35,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:14:35,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:14:35,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:14:35,670 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:14:35,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:14:35,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:14:35,671 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:14:35,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:14:35,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:14:35,674 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:14:35,715 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:14:35,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:14:35,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:14:35,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:14:35,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:14:35,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:14:35,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:14:35,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:14:35,719 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:14:35,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:14:35,720 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:14:35,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:14:35,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:14:35,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:14:35,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:14:35,721 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:14:35,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:14:35,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:14:35,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:14:35,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:14:35,722 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:14:35,722 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:14:35,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:14:35,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:14:35,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:14:35,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:14:35,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:14:35,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:14:35,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:14:35,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:14:35,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:14:35,724 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:14:35,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:14:35,725 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:14:35,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:14:36,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:14:36,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:14:36,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:14:36,064 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:14:36,064 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:14:36,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2023-08-30 03:14:37,210 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:14:37,524 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:14:37,533 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2023-08-30 03:14:37,555 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/600fd0504/0700c1b4f0324e39ab2e1eb0599a4480/FLAG1900a936d [2023-08-30 03:14:37,572 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/600fd0504/0700c1b4f0324e39ab2e1eb0599a4480 [2023-08-30 03:14:37,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:14:37,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:14:37,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:14:37,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:14:37,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:14:37,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:14:37" (1/1) ... [2023-08-30 03:14:37,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af8016e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:37, skipping insertion in model container [2023-08-30 03:14:37,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:14:37" (1/1) ... [2023-08-30 03:14:37,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:14:37,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:14:37,814 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i[992,1005] [2023-08-30 03:14:38,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:14:38,065 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:14:38,078 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i[992,1005] [2023-08-30 03:14:38,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:14:38,203 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:14:38,203 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:14:38,209 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:14:38,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38 WrapperNode [2023-08-30 03:14:38,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:14:38,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:14:38,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:14:38,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:14:38,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,269 INFO L138 Inliner]: procedures = 177, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 152 [2023-08-30 03:14:38,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:14:38,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:14:38,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:14:38,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:14:38,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,298 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,305 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:14:38,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:14:38,321 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:14:38,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:14:38,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (1/1) ... [2023-08-30 03:14:38,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:14:38,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:14:38,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:14:38,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:14:38,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 03:14:38,395 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 03:14:38,395 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 03:14:38,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 03:14:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 03:14:38,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 03:14:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 03:14:38,396 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 03:14:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:14:38,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:14:38,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:14:38,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:14:38,398 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:14:38,585 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:14:38,587 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:14:39,203 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:14:39,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:14:39,648 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:14:39,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:14:39 BoogieIcfgContainer [2023-08-30 03:14:39,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:14:39,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:14:39,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:14:39,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:14:39,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:14:37" (1/3) ... [2023-08-30 03:14:39,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb2559a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:14:39, skipping insertion in model container [2023-08-30 03:14:39,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:14:38" (2/3) ... [2023-08-30 03:14:39,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb2559a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:14:39, skipping insertion in model container [2023-08-30 03:14:39,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:14:39" (3/3) ... [2023-08-30 03:14:39,659 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2023-08-30 03:14:39,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:14:39,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-08-30 03:14:39,675 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:14:39,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:14:39,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 200 transitions, 420 flow [2023-08-30 03:14:39,951 INFO L130 PetriNetUnfolder]: 2/196 cut-off events. [2023-08-30 03:14:39,951 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:14:39,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 2/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 297 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-08-30 03:14:39,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 200 transitions, 420 flow [2023-08-30 03:14:39,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 404 flow [2023-08-30 03:14:39,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:14:39,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 404 flow [2023-08-30 03:14:39,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 404 flow [2023-08-30 03:14:39,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 404 flow [2023-08-30 03:14:40,057 INFO L130 PetriNetUnfolder]: 2/196 cut-off events. [2023-08-30 03:14:40,057 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:14:40,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 196 events. 2/196 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 298 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-08-30 03:14:40,064 INFO L119 LiptonReduction]: Number of co-enabled transitions 9730 [2023-08-30 03:14:47,857 INFO L134 LiptonReduction]: Checked pairs total: 59530 [2023-08-30 03:14:47,858 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-30 03:14:47,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:14:47,875 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;@3e8259ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:14:47,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2023-08-30 03:14:47,877 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:14:47,877 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:14:47,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:14:47,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:14:47,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:14:47,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:14:47,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1136, now seen corresponding path program 1 times [2023-08-30 03:14:47,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:14:47,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127552336] [2023-08-30 03:14:47,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:14:47,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:14:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:14:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:14:48,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:14:48,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127552336] [2023-08-30 03:14:48,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127552336] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:14:48,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:14:48,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:14:48,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296528464] [2023-08-30 03:14:48,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:14:48,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:14:48,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:14:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:14:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:14:48,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 356 [2023-08-30 03:14:48,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 87 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:14:48,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:14:48,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 356 [2023-08-30 03:14:48,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:21,410 INFO L130 PetriNetUnfolder]: 269708/353427 cut-off events. [2023-08-30 03:15:21,411 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-30 03:15:22,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703274 conditions, 353427 events. 269708/353427 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 20173. Compared 2505945 event pairs, 269708 based on Foata normal form. 4800/155873 useless extension candidates. Maximal degree in co-relation 703262. Up to 348508 conditions per place. [2023-08-30 03:15:23,533 INFO L137 encePairwiseOnDemand]: 327/356 looper letters, 56 selfloop transitions, 0 changer transitions 0/58 dead transitions. [2023-08-30 03:15:23,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 58 transitions, 240 flow [2023-08-30 03:15:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:15:23,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:15:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 373 transitions. [2023-08-30 03:15:23,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523876404494382 [2023-08-30 03:15:23,547 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 373 transitions. [2023-08-30 03:15:23,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 373 transitions. [2023-08-30 03:15:23,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:23,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 373 transitions. [2023-08-30 03:15:23,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 186.5) internal successors, (373), 2 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:23,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:23,560 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:23,562 INFO L175 Difference]: Start difference. First operand has 99 places, 87 transitions, 186 flow. Second operand 2 states and 373 transitions. [2023-08-30 03:15:23,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 58 transitions, 240 flow [2023-08-30 03:15:23,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:15:23,657 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 124 flow [2023-08-30 03:15:23,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2023-08-30 03:15:23,662 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -31 predicate places. [2023-08-30 03:15:23,662 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 124 flow [2023-08-30 03:15:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:23,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:23,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:15:23,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:15:23,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:15:23,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:23,664 INFO L85 PathProgramCache]: Analyzing trace with hash 34843054, now seen corresponding path program 1 times [2023-08-30 03:15:23,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:23,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349790131] [2023-08-30 03:15:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:15:23,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:23,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349790131] [2023-08-30 03:15:23,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349790131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:23,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:23,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456716416] [2023-08-30 03:15:23,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:23,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:23,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:24,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 356 [2023-08-30 03:15:24,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:24,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:24,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 356 [2023-08-30 03:15:24,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:44,176 INFO L130 PetriNetUnfolder]: 179595/242021 cut-off events. [2023-08-30 03:15:44,176 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:15:44,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482747 conditions, 242021 events. 179595/242021 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12099. Compared 1759040 event pairs, 105445 based on Foata normal form. 0/132630 useless extension candidates. Maximal degree in co-relation 482744. Up to 135081 conditions per place. [2023-08-30 03:15:45,463 INFO L137 encePairwiseOnDemand]: 333/356 looper letters, 68 selfloop transitions, 12 changer transitions 0/81 dead transitions. [2023-08-30 03:15:45,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 81 transitions, 330 flow [2023-08-30 03:15:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-30 03:15:45,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4700374531835206 [2023-08-30 03:15:45,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-30 03:15:45,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-30 03:15:45,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:45,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-30 03:15:45,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:45,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:45,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:45,472 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 124 flow. Second operand 3 states and 502 transitions. [2023-08-30 03:15:45,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 81 transitions, 330 flow [2023-08-30 03:15:45,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:15:45,475 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 226 flow [2023-08-30 03:15:45,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-08-30 03:15:45,476 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -29 predicate places. [2023-08-30 03:15:45,476 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 226 flow [2023-08-30 03:15:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:45,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:45,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:15:45,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:15:45,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:15:45,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:45,478 INFO L85 PathProgramCache]: Analyzing trace with hash 34843055, now seen corresponding path program 1 times [2023-08-30 03:15:45,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:45,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893529169] [2023-08-30 03:15:45,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:45,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:45,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:15:45,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893529169] [2023-08-30 03:15:45,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893529169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:45,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:45,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161204858] [2023-08-30 03:15:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:45,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:45,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 356 [2023-08-30 03:15:45,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:45,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:45,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 356 [2023-08-30 03:15:45,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:50,912 INFO L130 PetriNetUnfolder]: 40307/57064 cut-off events. [2023-08-30 03:15:50,912 INFO L131 PetriNetUnfolder]: For 17040/17040 co-relation queries the response was YES. [2023-08-30 03:15:51,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160144 conditions, 57064 events. 40307/57064 cut-off events. For 17040/17040 co-relation queries the response was YES. Maximal size of possible extension queue 3213. Compared 391772 event pairs, 29869 based on Foata normal form. 15637/65588 useless extension candidates. Maximal degree in co-relation 160139. Up to 54129 conditions per place. [2023-08-30 03:15:51,254 INFO L137 encePairwiseOnDemand]: 344/356 looper letters, 50 selfloop transitions, 1 changer transitions 1/55 dead transitions. [2023-08-30 03:15:51,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 308 flow [2023-08-30 03:15:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-30 03:15:51,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.449438202247191 [2023-08-30 03:15:51,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-30 03:15:51,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-30 03:15:51,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:51,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-30 03:15:51,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:51,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:51,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:51,262 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 226 flow. Second operand 3 states and 480 transitions. [2023-08-30 03:15:51,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 308 flow [2023-08-30 03:15:51,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 55 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:15:51,416 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2023-08-30 03:15:51,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-30 03:15:51,417 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -40 predicate places. [2023-08-30 03:15:51,418 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2023-08-30 03:15:51,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:51,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:51,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:15:51,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:15:51,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:15:51,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:51,419 INFO L85 PathProgramCache]: Analyzing trace with hash -861138886, now seen corresponding path program 1 times [2023-08-30 03:15:51,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:51,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664831558] [2023-08-30 03:15:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:51,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:15:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664831558] [2023-08-30 03:15:51,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664831558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:51,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:51,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823038147] [2023-08-30 03:15:51,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:51,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:51,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:51,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 356 [2023-08-30 03:15:51,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 3 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) [2023-08-30 03:15:51,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:51,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 356 [2023-08-30 03:15:51,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:15:56,325 INFO L130 PetriNetUnfolder]: 39158/56233 cut-off events. [2023-08-30 03:15:56,326 INFO L131 PetriNetUnfolder]: For 6169/6169 co-relation queries the response was YES. [2023-08-30 03:15:56,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145406 conditions, 56233 events. 39158/56233 cut-off events. For 6169/6169 co-relation queries the response was YES. Maximal size of possible extension queue 3267. Compared 399773 event pairs, 14048 based on Foata normal form. 0/42625 useless extension candidates. Maximal degree in co-relation 145401. Up to 40377 conditions per place. [2023-08-30 03:15:56,795 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 81 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-30 03:15:56,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 87 transitions, 458 flow [2023-08-30 03:15:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:15:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:15:56,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 03:15:56,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46722846441947563 [2023-08-30 03:15:56,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 03:15:56,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 03:15:56,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:15:56,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 03:15:56,801 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) [2023-08-30 03:15:56,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:56,803 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:56,803 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 3 states and 499 transitions. [2023-08-30 03:15:56,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 87 transitions, 458 flow [2023-08-30 03:15:56,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 87 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:15:56,806 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 192 flow [2023-08-30 03:15:56,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 03:15:56,807 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -39 predicate places. [2023-08-30 03:15:56,808 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 192 flow [2023-08-30 03:15:56,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 03:15:56,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:15:56,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:15:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:15:56,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:15:56,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:15:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -861138478, now seen corresponding path program 1 times [2023-08-30 03:15:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:15:56,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427942519] [2023-08-30 03:15:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:15:56,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:15:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:15:57,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:15:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:15:57,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427942519] [2023-08-30 03:15:57,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427942519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:15:57,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:15:57,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:15:57,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658228021] [2023-08-30 03:15:57,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:15:57,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:15:57,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:15:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:15:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:15:57,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 356 [2023-08-30 03:15:57,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:15:57,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:15:57,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 356 [2023-08-30 03:15:57,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:02,668 INFO L130 PetriNetUnfolder]: 45895/64052 cut-off events. [2023-08-30 03:16:02,668 INFO L131 PetriNetUnfolder]: For 11853/11965 co-relation queries the response was YES. [2023-08-30 03:16:02,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171672 conditions, 64052 events. 45895/64052 cut-off events. For 11853/11965 co-relation queries the response was YES. Maximal size of possible extension queue 2895. Compared 423431 event pairs, 11315 based on Foata normal form. 64/50104 useless extension candidates. Maximal degree in co-relation 171666. Up to 58680 conditions per place. [2023-08-30 03:16:03,069 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 82 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-30 03:16:03,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 480 flow [2023-08-30 03:16:03,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:03,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 493 transitions. [2023-08-30 03:16:03,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4616104868913858 [2023-08-30 03:16:03,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 493 transitions. [2023-08-30 03:16:03,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 493 transitions. [2023-08-30 03:16:03,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:03,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 493 transitions. [2023-08-30 03:16:03,074 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) [2023-08-30 03:16:03,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:03,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:03,077 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 192 flow. Second operand 3 states and 493 transitions. [2023-08-30 03:16:03,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 480 flow [2023-08-30 03:16:03,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:16:03,093 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 205 flow [2023-08-30 03:16:03,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-08-30 03:16:03,096 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -38 predicate places. [2023-08-30 03:16:03,096 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 205 flow [2023-08-30 03:16:03,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:03,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:03,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:03,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:16:03,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:03,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash -420712658, now seen corresponding path program 1 times [2023-08-30 03:16:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:03,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949391431] [2023-08-30 03:16:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:03,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:03,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:03,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:03,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949391431] [2023-08-30 03:16:03,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949391431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:03,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:03,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:16:03,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827154759] [2023-08-30 03:16:03,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:03,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:16:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:03,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:16:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:16:03,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 356 [2023-08-30 03:16:03,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:03,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:03,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 356 [2023-08-30 03:16:03,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:10,058 INFO L130 PetriNetUnfolder]: 50018/71397 cut-off events. [2023-08-30 03:16:10,058 INFO L131 PetriNetUnfolder]: For 12771/12771 co-relation queries the response was YES. [2023-08-30 03:16:10,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196351 conditions, 71397 events. 50018/71397 cut-off events. For 12771/12771 co-relation queries the response was YES. Maximal size of possible extension queue 3580. Compared 500814 event pairs, 23869 based on Foata normal form. 0/56598 useless extension candidates. Maximal degree in co-relation 196344. Up to 54618 conditions per place. [2023-08-30 03:16:10,469 INFO L137 encePairwiseOnDemand]: 348/356 looper letters, 69 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2023-08-30 03:16:10,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 432 flow [2023-08-30 03:16:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:16:10,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:16:10,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 606 transitions. [2023-08-30 03:16:10,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425561797752809 [2023-08-30 03:16:10,471 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 606 transitions. [2023-08-30 03:16:10,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 606 transitions. [2023-08-30 03:16:10,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:10,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 606 transitions. [2023-08-30 03:16:10,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.5) internal successors, (606), 4 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:10,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:10,476 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:10,477 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 205 flow. Second operand 4 states and 606 transitions. [2023-08-30 03:16:10,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 432 flow [2023-08-30 03:16:10,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 79 transitions, 428 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:16:10,481 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 251 flow [2023-08-30 03:16:10,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-08-30 03:16:10,486 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -36 predicate places. [2023-08-30 03:16:10,487 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 251 flow [2023-08-30 03:16:10,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:10,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:10,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:10,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:16:10,488 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:10,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:10,488 INFO L85 PathProgramCache]: Analyzing trace with hash -925490617, now seen corresponding path program 1 times [2023-08-30 03:16:10,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:10,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654731305] [2023-08-30 03:16:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:10,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:10,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654731305] [2023-08-30 03:16:10,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654731305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:10,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:10,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:16:10,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234776410] [2023-08-30 03:16:10,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:10,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:16:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:10,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:16:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:16:10,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 356 [2023-08-30 03:16:10,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:10,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:10,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 356 [2023-08-30 03:16:10,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:17,117 INFO L130 PetriNetUnfolder]: 47899/69038 cut-off events. [2023-08-30 03:16:17,117 INFO L131 PetriNetUnfolder]: For 26545/26545 co-relation queries the response was YES. [2023-08-30 03:16:17,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198137 conditions, 69038 events. 47899/69038 cut-off events. For 26545/26545 co-relation queries the response was YES. Maximal size of possible extension queue 3552. Compared 493520 event pairs, 18580 based on Foata normal form. 240/55529 useless extension candidates. Maximal degree in co-relation 198129. Up to 52735 conditions per place. [2023-08-30 03:16:17,552 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 83 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-08-30 03:16:17,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 535 flow [2023-08-30 03:16:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:16:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:16:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2023-08-30 03:16:17,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44592696629213485 [2023-08-30 03:16:17,555 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2023-08-30 03:16:17,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2023-08-30 03:16:17,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:17,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2023-08-30 03:16:17,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:17,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:17,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:17,560 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 251 flow. Second operand 4 states and 635 transitions. [2023-08-30 03:16:17,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 535 flow [2023-08-30 03:16:17,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 523 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:16:17,699 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 241 flow [2023-08-30 03:16:17,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2023-08-30 03:16:17,700 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -37 predicate places. [2023-08-30 03:16:17,700 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 241 flow [2023-08-30 03:16:17,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.75) internal successors, (583), 4 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:17,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:17,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:17,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:16:17,701 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:17,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:17,702 INFO L85 PathProgramCache]: Analyzing trace with hash -928321099, now seen corresponding path program 1 times [2023-08-30 03:16:17,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:17,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590226877] [2023-08-30 03:16:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:17,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:17,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:17,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590226877] [2023-08-30 03:16:17,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590226877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:17,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:17,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:16:17,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126700635] [2023-08-30 03:16:17,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:17,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:16:17,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:17,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:16:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:16:17,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 356 [2023-08-30 03:16:17,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:17,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:17,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 356 [2023-08-30 03:16:17,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:24,331 INFO L130 PetriNetUnfolder]: 47734/68600 cut-off events. [2023-08-30 03:16:24,332 INFO L131 PetriNetUnfolder]: For 27577/27819 co-relation queries the response was YES. [2023-08-30 03:16:24,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194572 conditions, 68600 events. 47734/68600 cut-off events. For 27577/27819 co-relation queries the response was YES. Maximal size of possible extension queue 3556. Compared 492765 event pairs, 19499 based on Foata normal form. 44/54719 useless extension candidates. Maximal degree in co-relation 194565. Up to 63139 conditions per place. [2023-08-30 03:16:24,914 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 87 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-30 03:16:24,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 563 flow [2023-08-30 03:16:24,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:24,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 03:16:24,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681647940074906 [2023-08-30 03:16:24,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 03:16:24,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 03:16:24,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:24,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 03:16:24,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:24,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:24,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:24,919 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 241 flow. Second operand 3 states and 500 transitions. [2023-08-30 03:16:24,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 563 flow [2023-08-30 03:16:25,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 96 transitions, 557 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:16:25,045 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 273 flow [2023-08-30 03:16:25,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2023-08-30 03:16:25,046 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -36 predicate places. [2023-08-30 03:16:25,046 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 273 flow [2023-08-30 03:16:25,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:25,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:25,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:25,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:16:25,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:25,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1286816021, now seen corresponding path program 1 times [2023-08-30 03:16:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:25,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906325587] [2023-08-30 03:16:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:25,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:25,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906325587] [2023-08-30 03:16:25,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906325587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:25,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:25,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:16:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380913119] [2023-08-30 03:16:25,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:25,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:16:25,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:25,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:16:25,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:16:25,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 356 [2023-08-30 03:16:25,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:25,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:25,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 356 [2023-08-30 03:16:25,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:31,692 INFO L130 PetriNetUnfolder]: 47747/68838 cut-off events. [2023-08-30 03:16:31,693 INFO L131 PetriNetUnfolder]: For 29944/29944 co-relation queries the response was YES. [2023-08-30 03:16:31,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202262 conditions, 68838 events. 47747/68838 cut-off events. For 29944/29944 co-relation queries the response was YES. Maximal size of possible extension queue 3552. Compared 492064 event pairs, 18476 based on Foata normal form. 36/55125 useless extension candidates. Maximal degree in co-relation 202254. Up to 52688 conditions per place. [2023-08-30 03:16:32,149 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 82 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-30 03:16:32,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 557 flow [2023-08-30 03:16:32,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:32,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:32,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-30 03:16:32,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46629213483146065 [2023-08-30 03:16:32,151 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-30 03:16:32,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-30 03:16:32,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:32,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-30 03:16:32,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:32,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:32,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:32,155 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 273 flow. Second operand 3 states and 498 transitions. [2023-08-30 03:16:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 557 flow [2023-08-30 03:16:32,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:16:32,455 INFO L231 Difference]: Finished difference. Result has 65 places, 62 transitions, 286 flow [2023-08-30 03:16:32,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=286, PETRI_PLACES=65, PETRI_TRANSITIONS=62} [2023-08-30 03:16:32,456 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -34 predicate places. [2023-08-30 03:16:32,456 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 62 transitions, 286 flow [2023-08-30 03:16:32,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:32,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:32,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:32,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:16:32,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:32,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:32,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1374570387, now seen corresponding path program 1 times [2023-08-30 03:16:32,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:32,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306607771] [2023-08-30 03:16:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:32,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:32,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306607771] [2023-08-30 03:16:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306607771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:16:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932065821] [2023-08-30 03:16:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:16:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:16:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:16:32,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 356 [2023-08-30 03:16:32,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 62 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:32,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:32,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 356 [2023-08-30 03:16:32,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:42,556 INFO L130 PetriNetUnfolder]: 75544/107318 cut-off events. [2023-08-30 03:16:42,556 INFO L131 PetriNetUnfolder]: For 53286/53382 co-relation queries the response was YES. [2023-08-30 03:16:43,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316030 conditions, 107318 events. 75544/107318 cut-off events. For 53286/53382 co-relation queries the response was YES. Maximal size of possible extension queue 5434. Compared 789818 event pairs, 26437 based on Foata normal form. 288/85211 useless extension candidates. Maximal degree in co-relation 316021. Up to 58268 conditions per place. [2023-08-30 03:16:43,366 INFO L137 encePairwiseOnDemand]: 353/356 looper letters, 95 selfloop transitions, 3 changer transitions 0/101 dead transitions. [2023-08-30 03:16:43,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 101 transitions, 634 flow [2023-08-30 03:16:43,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:16:43,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:16:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-30 03:16:43,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46254681647940077 [2023-08-30 03:16:43,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-30 03:16:43,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-30 03:16:43,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:43,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-30 03:16:43,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:43,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:43,371 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:43,371 INFO L175 Difference]: Start difference. First operand has 65 places, 62 transitions, 286 flow. Second operand 3 states and 494 transitions. [2023-08-30 03:16:43,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 101 transitions, 634 flow [2023-08-30 03:16:43,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 101 transitions, 624 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:16:43,544 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 287 flow [2023-08-30 03:16:43,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2023-08-30 03:16:43,544 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -33 predicate places. [2023-08-30 03:16:43,545 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 287 flow [2023-08-30 03:16:43,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:43,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:43,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:16:43,545 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:43,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash -160009919, now seen corresponding path program 1 times [2023-08-30 03:16:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:43,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399329285] [2023-08-30 03:16:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:43,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:43,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399329285] [2023-08-30 03:16:43,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399329285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:43,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:43,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:16:43,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481238771] [2023-08-30 03:16:43,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:43,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:16:43,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:16:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:16:43,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 356 [2023-08-30 03:16:43,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 287 flow. Second operand has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:43,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:43,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 356 [2023-08-30 03:16:43,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:16:53,695 INFO L130 PetriNetUnfolder]: 67731/97294 cut-off events. [2023-08-30 03:16:53,695 INFO L131 PetriNetUnfolder]: For 46835/47179 co-relation queries the response was YES. [2023-08-30 03:16:53,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289119 conditions, 97294 events. 67731/97294 cut-off events. For 46835/47179 co-relation queries the response was YES. Maximal size of possible extension queue 5605. Compared 737232 event pairs, 28896 based on Foata normal form. 112/76488 useless extension candidates. Maximal degree in co-relation 289109. Up to 78121 conditions per place. [2023-08-30 03:16:54,295 INFO L137 encePairwiseOnDemand]: 352/356 looper letters, 122 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2023-08-30 03:16:54,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 132 transitions, 808 flow [2023-08-30 03:16:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:16:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:16:54,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 660 transitions. [2023-08-30 03:16:54,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46348314606741575 [2023-08-30 03:16:54,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 660 transitions. [2023-08-30 03:16:54,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 660 transitions. [2023-08-30 03:16:54,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:16:54,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 660 transitions. [2023-08-30 03:16:54,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:54,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:54,301 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:54,302 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 287 flow. Second operand 4 states and 660 transitions. [2023-08-30 03:16:54,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 132 transitions, 808 flow [2023-08-30 03:16:54,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 132 transitions, 800 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 03:16:54,621 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 297 flow [2023-08-30 03:16:54,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=297, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-08-30 03:16:54,622 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -30 predicate places. [2023-08-30 03:16:54,622 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 297 flow [2023-08-30 03:16:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:54,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:16:54,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:16:54,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:16:54,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:16:54,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:16:54,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1374617143, now seen corresponding path program 1 times [2023-08-30 03:16:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:16:54,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518612989] [2023-08-30 03:16:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:16:54,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:16:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:16:54,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:16:54,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:16:54,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518612989] [2023-08-30 03:16:54,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518612989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:16:54,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:16:54,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:16:54,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363027253] [2023-08-30 03:16:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:16:54,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:16:54,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:16:54,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:16:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:16:54,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 356 [2023-08-30 03:16:54,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 297 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:16:54,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:16:54,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 356 [2023-08-30 03:16:54,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:17:02,910 INFO L130 PetriNetUnfolder]: 59287/84618 cut-off events. [2023-08-30 03:17:02,911 INFO L131 PetriNetUnfolder]: For 49647/49743 co-relation queries the response was YES. [2023-08-30 03:17:03,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260434 conditions, 84618 events. 59287/84618 cut-off events. For 49647/49743 co-relation queries the response was YES. Maximal size of possible extension queue 5092. Compared 614641 event pairs, 17199 based on Foata normal form. 76/67023 useless extension candidates. Maximal degree in co-relation 260423. Up to 39596 conditions per place. [2023-08-30 03:17:03,438 INFO L137 encePairwiseOnDemand]: 335/356 looper letters, 71 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2023-08-30 03:17:03,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 92 transitions, 621 flow [2023-08-30 03:17:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:17:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:17:03,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 609 transitions. [2023-08-30 03:17:03,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276685393258427 [2023-08-30 03:17:03,440 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 609 transitions. [2023-08-30 03:17:03,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 609 transitions. [2023-08-30 03:17:03,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:17:03,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 609 transitions. [2023-08-30 03:17:03,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:03,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:03,443 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 356.0) internal successors, (1780), 5 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:03,443 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 297 flow. Second operand 4 states and 609 transitions. [2023-08-30 03:17:03,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 92 transitions, 621 flow [2023-08-30 03:17:03,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 92 transitions, 600 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-30 03:17:03,712 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 435 flow [2023-08-30 03:17:03,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=435, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2023-08-30 03:17:03,713 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -27 predicate places. [2023-08-30 03:17:03,713 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 435 flow [2023-08-30 03:17:03,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:03,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:17:03,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:17:03,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:17:03,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:17:03,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:17:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1665237081, now seen corresponding path program 1 times [2023-08-30 03:17:03,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:17:03,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377243151] [2023-08-30 03:17:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:17:03,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:17:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:17:04,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:17:04,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:17:04,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377243151] [2023-08-30 03:17:04,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377243151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:17:04,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:17:04,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:17:04,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393133134] [2023-08-30 03:17:04,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:17:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:17:04,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:17:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:17:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:17:04,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 356 [2023-08-30 03:17:04,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 435 flow. Second operand has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:04,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:17:04,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 356 [2023-08-30 03:17:04,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:17:20,811 INFO L130 PetriNetUnfolder]: 105945/150531 cut-off events. [2023-08-30 03:17:20,811 INFO L131 PetriNetUnfolder]: For 194119/195051 co-relation queries the response was YES. [2023-08-30 03:17:21,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 539271 conditions, 150531 events. 105945/150531 cut-off events. For 194119/195051 co-relation queries the response was YES. Maximal size of possible extension queue 7849. Compared 1171037 event pairs, 19298 based on Foata normal form. 470/134572 useless extension candidates. Maximal degree in co-relation 539259. Up to 72037 conditions per place. [2023-08-30 03:17:21,864 INFO L137 encePairwiseOnDemand]: 349/356 looper letters, 196 selfloop transitions, 18 changer transitions 0/217 dead transitions. [2023-08-30 03:17:21,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 217 transitions, 1741 flow [2023-08-30 03:17:21,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:17:21,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:17:21,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 967 transitions. [2023-08-30 03:17:21,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45271535580524347 [2023-08-30 03:17:21,867 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 967 transitions. [2023-08-30 03:17:21,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 967 transitions. [2023-08-30 03:17:21,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:17:21,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 967 transitions. [2023-08-30 03:17:21,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:21,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:21,872 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:21,873 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 435 flow. Second operand 6 states and 967 transitions. [2023-08-30 03:17:21,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 217 transitions, 1741 flow [2023-08-30 03:17:23,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 217 transitions, 1732 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 03:17:23,214 INFO L231 Difference]: Finished difference. Result has 78 places, 81 transitions, 623 flow [2023-08-30 03:17:23,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=78, PETRI_TRANSITIONS=81} [2023-08-30 03:17:23,214 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -21 predicate places. [2023-08-30 03:17:23,214 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 81 transitions, 623 flow [2023-08-30 03:17:23,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:23,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:17:23,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:17:23,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 03:17:23,215 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:17:23,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:17:23,216 INFO L85 PathProgramCache]: Analyzing trace with hash -337926597, now seen corresponding path program 2 times [2023-08-30 03:17:23,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:17:23,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702166710] [2023-08-30 03:17:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:17:23,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:17:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:17:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:17:24,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:17:24,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702166710] [2023-08-30 03:17:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702166710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:17:24,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:17:24,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:17:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543950159] [2023-08-30 03:17:24,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:17:24,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:17:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:17:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:17:24,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:17:25,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 356 [2023-08-30 03:17:25,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 623 flow. Second operand has 10 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:25,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:17:25,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 356 [2023-08-30 03:17:25,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:17:41,260 INFO L130 PetriNetUnfolder]: 100710/143491 cut-off events. [2023-08-30 03:17:41,260 INFO L131 PetriNetUnfolder]: For 197897/198204 co-relation queries the response was YES. [2023-08-30 03:17:41,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531151 conditions, 143491 events. 100710/143491 cut-off events. For 197897/198204 co-relation queries the response was YES. Maximal size of possible extension queue 8319. Compared 1108613 event pairs, 56453 based on Foata normal form. 404/129513 useless extension candidates. Maximal degree in co-relation 531136. Up to 129949 conditions per place. [2023-08-30 03:17:42,366 INFO L137 encePairwiseOnDemand]: 342/356 looper letters, 180 selfloop transitions, 84 changer transitions 0/266 dead transitions. [2023-08-30 03:17:42,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 266 transitions, 2416 flow [2023-08-30 03:17:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 03:17:42,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 03:17:42,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1596 transitions. [2023-08-30 03:17:42,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37359550561797755 [2023-08-30 03:17:42,371 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1596 transitions. [2023-08-30 03:17:42,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1596 transitions. [2023-08-30 03:17:42,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:17:42,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1596 transitions. [2023-08-30 03:17:42,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 133.0) internal successors, (1596), 12 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:42,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 356.0) internal successors, (4628), 13 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:42,525 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 356.0) internal successors, (4628), 13 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:42,525 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 623 flow. Second operand 12 states and 1596 transitions. [2023-08-30 03:17:42,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 266 transitions, 2416 flow [2023-08-30 03:17:43,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 266 transitions, 2389 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 03:17:43,280 INFO L231 Difference]: Finished difference. Result has 96 places, 164 transitions, 1658 flow [2023-08-30 03:17:43,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1658, PETRI_PLACES=96, PETRI_TRANSITIONS=164} [2023-08-30 03:17:43,281 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -3 predicate places. [2023-08-30 03:17:43,281 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 164 transitions, 1658 flow [2023-08-30 03:17:43,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:43,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:17:43,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:17:43,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 03:17:43,282 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:17:43,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:17:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash -336547399, now seen corresponding path program 1 times [2023-08-30 03:17:43,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:17:43,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828582051] [2023-08-30 03:17:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:17:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:17:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:17:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:17:43,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:17:43,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828582051] [2023-08-30 03:17:43,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828582051] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:17:43,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:17:43,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 03:17:43,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714343208] [2023-08-30 03:17:43,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:17:43,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 03:17:43,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:17:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 03:17:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 03:17:43,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 356 [2023-08-30 03:17:43,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 164 transitions, 1658 flow. Second operand has 7 states, 7 states have (on average 132.42857142857142) internal successors, (927), 7 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:43,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:17:43,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 356 [2023-08-30 03:17:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:17:58,325 INFO L130 PetriNetUnfolder]: 82992/118888 cut-off events. [2023-08-30 03:17:58,325 INFO L131 PetriNetUnfolder]: For 215315/215552 co-relation queries the response was YES. [2023-08-30 03:17:59,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488453 conditions, 118888 events. 82992/118888 cut-off events. For 215315/215552 co-relation queries the response was YES. Maximal size of possible extension queue 6876. Compared 899817 event pairs, 22944 based on Foata normal form. 1298/107195 useless extension candidates. Maximal degree in co-relation 488429. Up to 48018 conditions per place. [2023-08-30 03:17:59,679 INFO L137 encePairwiseOnDemand]: 335/356 looper letters, 191 selfloop transitions, 53 changer transitions 0/246 dead transitions. [2023-08-30 03:17:59,679 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 246 transitions, 2864 flow [2023-08-30 03:17:59,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:17:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:17:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 871 transitions. [2023-08-30 03:17:59,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40777153558052437 [2023-08-30 03:17:59,681 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 871 transitions. [2023-08-30 03:17:59,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 871 transitions. [2023-08-30 03:17:59,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:17:59,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 871 transitions. [2023-08-30 03:17:59,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 145.16666666666666) internal successors, (871), 6 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:59,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:59,687 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 356.0) internal successors, (2492), 7 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:17:59,687 INFO L175 Difference]: Start difference. First operand has 96 places, 164 transitions, 1658 flow. Second operand 6 states and 871 transitions. [2023-08-30 03:17:59,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 246 transitions, 2864 flow [2023-08-30 03:18:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 246 transitions, 2850 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-08-30 03:18:02,538 INFO L231 Difference]: Finished difference. Result has 103 places, 185 transitions, 2178 flow [2023-08-30 03:18:02,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=103, PETRI_TRANSITIONS=185} [2023-08-30 03:18:02,539 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 4 predicate places. [2023-08-30 03:18:02,539 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 185 transitions, 2178 flow [2023-08-30 03:18:02,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 132.42857142857142) internal successors, (927), 7 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:02,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:18:02,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:18:02,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 03:18:02,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:18:02,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:18:02,540 INFO L85 PathProgramCache]: Analyzing trace with hash -572192375, now seen corresponding path program 3 times [2023-08-30 03:18:02,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:18:02,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781752857] [2023-08-30 03:18:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:18:02,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:18:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:18:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:18:03,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:18:03,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781752857] [2023-08-30 03:18:03,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781752857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:18:03,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:18:03,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:18:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251412311] [2023-08-30 03:18:03,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:18:03,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:18:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:18:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:18:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:18:04,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 356 [2023-08-30 03:18:04,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 185 transitions, 2178 flow. Second operand has 10 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:04,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:18:04,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 356 [2023-08-30 03:18:04,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:18:19,795 INFO L130 PetriNetUnfolder]: 82957/118473 cut-off events. [2023-08-30 03:18:19,795 INFO L131 PetriNetUnfolder]: For 327272/327507 co-relation queries the response was YES. [2023-08-30 03:18:20,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543880 conditions, 118473 events. 82957/118473 cut-off events. For 327272/327507 co-relation queries the response was YES. Maximal size of possible extension queue 6772. Compared 899168 event pairs, 41799 based on Foata normal form. 103/105494 useless extension candidates. Maximal degree in co-relation 543854. Up to 111612 conditions per place. [2023-08-30 03:18:21,038 INFO L137 encePairwiseOnDemand]: 343/356 looper letters, 239 selfloop transitions, 137 changer transitions 0/378 dead transitions. [2023-08-30 03:18:21,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 378 transitions, 4702 flow [2023-08-30 03:18:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:18:21,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:18:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1456 transitions. [2023-08-30 03:18:21,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3718079673135853 [2023-08-30 03:18:21,041 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1456 transitions. [2023-08-30 03:18:21,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1456 transitions. [2023-08-30 03:18:21,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:18:21,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1456 transitions. [2023-08-30 03:18:21,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.36363636363637) internal successors, (1456), 11 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:21,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:21,048 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 356.0) internal successors, (4272), 12 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:21,048 INFO L175 Difference]: Start difference. First operand has 103 places, 185 transitions, 2178 flow. Second operand 11 states and 1456 transitions. [2023-08-30 03:18:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 378 transitions, 4702 flow [2023-08-30 03:18:23,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 378 transitions, 4671 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:18:23,286 INFO L231 Difference]: Finished difference. Result has 117 places, 292 transitions, 3926 flow [2023-08-30 03:18:23,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2160, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3926, PETRI_PLACES=117, PETRI_TRANSITIONS=292} [2023-08-30 03:18:23,287 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 18 predicate places. [2023-08-30 03:18:23,287 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 292 transitions, 3926 flow [2023-08-30 03:18:23,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.7) internal successors, (1217), 10 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:23,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:18:23,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:18:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 03:18:23,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:18:23,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:18:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1236605285, now seen corresponding path program 1 times [2023-08-30 03:18:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:18:23,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059714746] [2023-08-30 03:18:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:18:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:18:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:18:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:18:23,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:18:23,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059714746] [2023-08-30 03:18:23,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059714746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:18:23,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:18:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:18:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027905073] [2023-08-30 03:18:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:18:23,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:18:23,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:18:23,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:18:23,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:18:23,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 356 [2023-08-30 03:18:23,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 292 transitions, 3926 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:23,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:18:23,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 356 [2023-08-30 03:18:23,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:18:31,691 INFO L130 PetriNetUnfolder]: 36009/54734 cut-off events. [2023-08-30 03:18:31,692 INFO L131 PetriNetUnfolder]: For 174016/174117 co-relation queries the response was YES. [2023-08-30 03:18:32,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266350 conditions, 54734 events. 36009/54734 cut-off events. For 174016/174117 co-relation queries the response was YES. Maximal size of possible extension queue 3698. Compared 425834 event pairs, 11023 based on Foata normal form. 245/48850 useless extension candidates. Maximal degree in co-relation 266316. Up to 52191 conditions per place. [2023-08-30 03:18:32,373 INFO L137 encePairwiseOnDemand]: 350/356 looper letters, 254 selfloop transitions, 5 changer transitions 0/264 dead transitions. [2023-08-30 03:18:32,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 264 transitions, 3484 flow [2023-08-30 03:18:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:18:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:18:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-30 03:18:32,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.448501872659176 [2023-08-30 03:18:32,375 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-30 03:18:32,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-30 03:18:32,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:18:32,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-30 03:18:32,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:32,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:32,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 356.0) internal successors, (1424), 4 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:32,377 INFO L175 Difference]: Start difference. First operand has 117 places, 292 transitions, 3926 flow. Second operand 3 states and 479 transitions. [2023-08-30 03:18:32,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 264 transitions, 3484 flow [2023-08-30 03:18:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 264 transitions, 3295 flow, removed 78 selfloop flow, removed 5 redundant places. [2023-08-30 03:18:34,346 INFO L231 Difference]: Finished difference. Result has 115 places, 212 transitions, 2370 flow [2023-08-30 03:18:34,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=356, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2370, PETRI_PLACES=115, PETRI_TRANSITIONS=212} [2023-08-30 03:18:34,347 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, 16 predicate places. [2023-08-30 03:18:34,348 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 212 transitions, 2370 flow [2023-08-30 03:18:34,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:34,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:18:34,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:18:34,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 03:18:34,349 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2023-08-30 03:18:34,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:18:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash -775497253, now seen corresponding path program 1 times [2023-08-30 03:18:34,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:18:34,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991749863] [2023-08-30 03:18:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:18:34,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:18:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:18:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:18:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:18:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991749863] [2023-08-30 03:18:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991749863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:18:36,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:18:36,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 03:18:36,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341872150] [2023-08-30 03:18:36,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:18:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:18:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:18:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:18:36,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:18:36,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 356 [2023-08-30 03:18:36,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 212 transitions, 2370 flow. Second operand has 12 states, 12 states have (on average 119.58333333333333) internal successors, (1435), 12 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:18:36,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:18:36,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 356 [2023-08-30 03:18:36,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand