./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c --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/weaver/mult-flipped-dist.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 --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 05:28:19,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:28:19,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:28:19,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:28:19,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:28:19,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:28:19,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:28:19,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:28:19,506 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:28:19,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:28:19,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:28:19,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:28:19,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:28:19,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:28:19,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:28:19,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:28:19,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:28:19,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:28:19,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:28:19,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:28:19,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:28:19,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:28:19,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:28:19,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:28:19,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:28:19,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:28:19,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:28:19,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:28:19,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:28:19,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:28:19,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:28:19,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:28:19,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:28:19,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:28:19,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:28:19,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:28:19,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:28:19,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:28:19,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:28:19,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:28:19,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:28:19,563 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:28:19,593 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:28:19,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:28:19,595 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:28:19,595 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:28:19,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:28:19,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:28:19,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:28:19,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:28:19,598 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:28:19,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:28:19,599 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:28:19,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:28:19,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:28:19,599 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:28:19,599 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:28:19,600 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:28:19,600 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:28:19,600 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:28:19,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:28:19,600 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:28:19,600 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:28:19,601 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:28:19,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:28:19,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:28:19,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:28:19,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:28:19,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:28:19,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:28:19,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:28:19,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:28:19,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:28:19,603 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:28:19,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:28:19,603 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:28:19,603 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:28:19,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:28:19,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:28:19,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:28:19,937 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:28:19,937 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:28:19,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-30 05:28:21,020 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:28:21,239 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:28:21,239 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-30 05:28:21,245 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5804521b5/8a54f128c454408d9861c2d7aa8c0cca/FLAG906fa05f6 [2023-08-30 05:28:21,259 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5804521b5/8a54f128c454408d9861c2d7aa8c0cca [2023-08-30 05:28:21,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:28:21,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:28:21,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:28:21,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:28:21,268 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:28:21,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266a494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21, skipping insertion in model container [2023-08-30 05:28:21,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:28:21,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:28:21,430 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2023-08-30 05:28:21,442 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:28:21,453 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:28:21,490 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c[2135,2148] [2023-08-30 05:28:21,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:28:21,510 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:28:21,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21 WrapperNode [2023-08-30 05:28:21,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:28:21,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:28:21,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:28:21,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:28:21,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,555 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-08-30 05:28:21,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:28:21,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:28:21,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:28:21,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:28:21,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,596 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:28:21,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:28:21,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:28:21,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:28:21,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (1/1) ... [2023-08-30 05:28:21,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:28:21,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:21,634 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 05:28:21,661 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 05:28:21,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:28:21,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:28:21,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:28:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:28:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:28:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:28:21,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:28:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:28:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:28:21,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:28:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:28:21,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:28:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:28:21,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:28:21,678 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 05:28:21,788 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:28:21,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:28:22,082 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:28:22,088 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:28:22,089 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 05:28:22,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:28:22 BoogieIcfgContainer [2023-08-30 05:28:22,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:28:22,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:28:22,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:28:22,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:28:22,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:28:21" (1/3) ... [2023-08-30 05:28:22,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b34916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:28:22, skipping insertion in model container [2023-08-30 05:28:22,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:28:21" (2/3) ... [2023-08-30 05:28:22,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b34916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:28:22, skipping insertion in model container [2023-08-30 05:28:22,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:28:22" (3/3) ... [2023-08-30 05:28:22,098 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-08-30 05:28:22,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:28:22,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:28:22,113 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:28:22,232 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:28:22,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 121 transitions, 266 flow [2023-08-30 05:28:22,353 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2023-08-30 05:28:22,354 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:22,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 118 events. 7/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-30 05:28:22,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 121 transitions, 266 flow [2023-08-30 05:28:22,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 114 transitions, 246 flow [2023-08-30 05:28:22,368 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:28:22,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 114 transitions, 246 flow [2023-08-30 05:28:22,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 114 transitions, 246 flow [2023-08-30 05:28:22,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 114 transitions, 246 flow [2023-08-30 05:28:22,428 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2023-08-30 05:28:22,428 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:22,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 7/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-30 05:28:22,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-08-30 05:28:25,571 INFO L134 LiptonReduction]: Checked pairs total: 1724 [2023-08-30 05:28:25,571 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-30 05:28:25,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:28:25,587 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;@4a730f37, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:28:25,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:28:25,588 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 05:28:25,588 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:28:25,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:25,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:28:25,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:25,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash 441, now seen corresponding path program 1 times [2023-08-30 05:28:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:25,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289976878] [2023-08-30 05:28:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:25,677 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 05:28:25,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289976878] [2023-08-30 05:28:25,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289976878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:25,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:28:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323040804] [2023-08-30 05:28:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:25,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:28:25,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:28:25,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:28:25,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-08-30 05:28:25,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 05:28:25,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:25,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-08-30 05:28:25,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:25,832 INFO L130 PetriNetUnfolder]: 578/785 cut-off events. [2023-08-30 05:28:25,833 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 05:28:25,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 785 events. 578/785 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2787 event pairs, 263 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 1257. Up to 777 conditions per place. [2023-08-30 05:28:25,844 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-30 05:28:25,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 140 flow [2023-08-30 05:28:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:28:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:28:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2023-08-30 05:28:25,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-30 05:28:25,860 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2023-08-30 05:28:25,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2023-08-30 05:28:25,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:25,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2023-08-30 05:28:25,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 05:28:25,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 05:28:25,873 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states 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 05:28:25,875 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 2 states and 252 transitions. [2023-08-30 05:28:25,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 140 flow [2023-08-30 05:28:25,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:28:25,880 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2023-08-30 05:28:25,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 05:28:25,884 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 05:28:25,884 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2023-08-30 05:28:25,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 05:28:25,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:25,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:28:25,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:28:25,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:25,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash 432598, now seen corresponding path program 1 times [2023-08-30 05:28:25,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:25,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393493098] [2023-08-30 05:28:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:25,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:26,079 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 05:28:26,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:26,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393493098] [2023-08-30 05:28:26,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393493098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:26,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:26,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:28:26,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443380594] [2023-08-30 05:28:26,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:28:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:28:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:28:26,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:26,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 05:28:26,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:26,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:26,214 INFO L130 PetriNetUnfolder]: 551/746 cut-off events. [2023-08-30 05:28:26,214 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:26,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 746 events. 551/746 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2573 event pairs, 250 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 1496. Up to 737 conditions per place. [2023-08-30 05:28:26,218 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 05:28:26,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 120 flow [2023-08-30 05:28:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:26,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-30 05:28:26,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-08-30 05:28:26,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-30 05:28:26,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-30 05:28:26,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:26,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-30 05:28:26,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 05:28:26,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,232 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 329 transitions. [2023-08-30 05:28:26,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 120 flow [2023-08-30 05:28:26,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:28:26,233 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2023-08-30 05:28:26,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 05:28:26,234 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-30 05:28:26,235 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2023-08-30 05:28:26,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 05:28:26,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:26,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:28:26,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:28:26,236 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:26,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:26,240 INFO L85 PathProgramCache]: Analyzing trace with hash 432599, now seen corresponding path program 1 times [2023-08-30 05:28:26,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:26,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002546544] [2023-08-30 05:28:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:26,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:26,368 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 05:28:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002546544] [2023-08-30 05:28:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002546544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:26,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:26,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:28:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495531234] [2023-08-30 05:28:26,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:26,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:28:26,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:26,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:28:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:28:26,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-08-30 05:28:26,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 05:28:26,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:26,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-08-30 05:28:26,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:26,488 INFO L130 PetriNetUnfolder]: 524/707 cut-off events. [2023-08-30 05:28:26,489 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:26,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 707 events. 524/707 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2404 event pairs, 237 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 1419. Up to 698 conditions per place. [2023-08-30 05:28:26,494 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 05:28:26,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 114 flow [2023-08-30 05:28:26,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-30 05:28:26,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-30 05:28:26,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-30 05:28:26,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-30 05:28:26,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:26,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-30 05:28:26,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 05:28:26,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,500 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 342 transitions. [2023-08-30 05:28:26,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 114 flow [2023-08-30 05:28:26,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:26,502 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 65 flow [2023-08-30 05:28:26,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-30 05:28:26,503 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-30 05:28:26,506 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 65 flow [2023-08-30 05:28:26,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states 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 05:28:26,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:26,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:28:26,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:28:26,507 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:26,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 415735409, now seen corresponding path program 1 times [2023-08-30 05:28:26,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305572123] [2023-08-30 05:28:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:26,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:26,572 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 05:28:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305572123] [2023-08-30 05:28:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305572123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:26,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:26,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:28:26,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771201964] [2023-08-30 05:28:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:26,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:28:26,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:28:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:28:26,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:26,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 05:28:26,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:26,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:26,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:26,703 INFO L130 PetriNetUnfolder]: 498/669 cut-off events. [2023-08-30 05:28:26,704 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:26,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 669 events. 498/669 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2231 event pairs, 225 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 1344. Up to 660 conditions per place. [2023-08-30 05:28:26,710 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 05:28:26,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 107 flow [2023-08-30 05:28:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-30 05:28:26,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836309523809524 [2023-08-30 05:28:26,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-30 05:28:26,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-30 05:28:26,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:26,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-30 05:28:26,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 05:28:26,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,720 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 325 transitions. [2023-08-30 05:28:26,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 107 flow [2023-08-30 05:28:26,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:26,722 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 62 flow [2023-08-30 05:28:26,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 05:28:26,723 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2023-08-30 05:28:26,723 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 62 flow [2023-08-30 05:28:26,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 05:28:26,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:26,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:28:26,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:28:26,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:26,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:26,725 INFO L85 PathProgramCache]: Analyzing trace with hash 415735411, now seen corresponding path program 1 times [2023-08-30 05:28:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:26,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133423614] [2023-08-30 05:28:26,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:26,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:26,810 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 05:28:26,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:26,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133423614] [2023-08-30 05:28:26,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133423614] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:26,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:26,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:28:26,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222892618] [2023-08-30 05:28:26,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:26,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:28:26,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:26,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:28:26,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:28:26,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-08-30 05:28:26,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 05:28:26,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:26,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-08-30 05:28:26,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:26,916 INFO L130 PetriNetUnfolder]: 472/631 cut-off events. [2023-08-30 05:28:26,917 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:26,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 631 events. 472/631 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2062 event pairs, 213 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 1269. Up to 622 conditions per place. [2023-08-30 05:28:26,920 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-30 05:28:26,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 100 flow [2023-08-30 05:28:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:26,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-30 05:28:26,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2023-08-30 05:28:26,922 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-30 05:28:26,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-30 05:28:26,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:26,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-30 05:28:26,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 05:28:26,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,926 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:26,926 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 62 flow. Second operand 3 states and 338 transitions. [2023-08-30 05:28:26,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 100 flow [2023-08-30 05:28:26,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:26,927 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 59 flow [2023-08-30 05:28:26,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-30 05:28:26,928 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-30 05:28:26,928 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 59 flow [2023-08-30 05:28:26,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 05:28:26,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:26,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:26,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:28:26,929 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:26,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 89780272, now seen corresponding path program 1 times [2023-08-30 05:28:26,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:26,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147045141] [2023-08-30 05:28:26,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:27,015 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 05:28:27,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:27,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147045141] [2023-08-30 05:28:27,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147045141] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:27,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:28:27,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765576105] [2023-08-30 05:28:27,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:27,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:28:27,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:28:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:28:27,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 224 [2023-08-30 05:28:27,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 05:28:27,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:27,106 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 224 [2023-08-30 05:28:27,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:27,160 INFO L130 PetriNetUnfolder]: 370/502 cut-off events. [2023-08-30 05:28:27,160 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:27,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 502 events. 370/502 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1593 event pairs, 165 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 1012. Up to 493 conditions per place. [2023-08-30 05:28:27,163 INFO L137 encePairwiseOnDemand]: 222/224 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-30 05:28:27,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 97 flow [2023-08-30 05:28:27,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 05:28:27,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2023-08-30 05:28:27,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 05:28:27,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 05:28:27,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:27,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 05:28:27,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 05:28:27,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:27,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:27,168 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 59 flow. Second operand 3 states and 297 transitions. [2023-08-30 05:28:27,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 97 flow [2023-08-30 05:28:27,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:27,170 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 58 flow [2023-08-30 05:28:27,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-30 05:28:27,171 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-30 05:28:27,171 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 58 flow [2023-08-30 05:28:27,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states 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 05:28:27,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:27,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:27,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:28:27,172 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:27,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:27,172 INFO L85 PathProgramCache]: Analyzing trace with hash 89780273, now seen corresponding path program 1 times [2023-08-30 05:28:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:27,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882621991] [2023-08-30 05:28:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:27,322 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 05:28:27,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:27,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882621991] [2023-08-30 05:28:27,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882621991] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:27,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:27,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:28:27,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145478442] [2023-08-30 05:28:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:27,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:28:27,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:27,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:28:27,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:28:27,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-08-30 05:28:27,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 05:28:27,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:27,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-08-30 05:28:27,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:27,396 INFO L130 PetriNetUnfolder]: 268/373 cut-off events. [2023-08-30 05:28:27,397 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:28:27,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 373 events. 268/373 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1103 event pairs, 117 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 755. Up to 364 conditions per place. [2023-08-30 05:28:27,399 INFO L137 encePairwiseOnDemand]: 222/224 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 05:28:27,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 94 flow [2023-08-30 05:28:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:27,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:27,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-30 05:28:27,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49851190476190477 [2023-08-30 05:28:27,401 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-30 05:28:27,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-30 05:28:27,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:27,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-30 05:28:27,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states 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 05:28:27,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:27,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:27,404 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 58 flow. Second operand 3 states and 335 transitions. [2023-08-30 05:28:27,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 94 flow [2023-08-30 05:28:27,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:27,405 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 57 flow [2023-08-30 05:28:27,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-30 05:28:27,406 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-30 05:28:27,406 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 57 flow [2023-08-30 05:28:27,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states 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 05:28:27,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:27,406 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 05:28:27,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:28:27,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:27,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:27,407 INFO L85 PathProgramCache]: Analyzing trace with hash 563403458, now seen corresponding path program 1 times [2023-08-30 05:28:27,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:27,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673324789] [2023-08-30 05:28:27,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:27,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:27,635 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 05:28:27,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:27,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673324789] [2023-08-30 05:28:27,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673324789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:27,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:27,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:28:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010527440] [2023-08-30 05:28:27,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:27,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:28:27,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:27,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:28:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:28:27,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-08-30 05:28:27,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 05:28:27,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:27,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-08-30 05:28:27,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:27,736 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-08-30 05:28:27,736 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 05:28:27,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 506 events. 359/506 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1613 event pairs, 39 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 1028. Up to 421 conditions per place. [2023-08-30 05:28:27,739 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-30 05:28:27,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 164 flow [2023-08-30 05:28:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:28:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:28:27,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-30 05:28:27,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2023-08-30 05:28:27,741 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-30 05:28:27,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-30 05:28:27,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:27,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-30 05:28:27,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 05:28:27,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:27,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states 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 05:28:27,745 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 57 flow. Second operand 3 states and 357 transitions. [2023-08-30 05:28:27,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 164 flow [2023-08-30 05:28:27,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:27,747 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2023-08-30 05:28:27,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-30 05:28:27,750 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-30 05:28:27,750 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2023-08-30 05:28:27,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 05:28:27,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:27,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:28:27,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:27,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash -493619620, now seen corresponding path program 1 times [2023-08-30 05:28:27,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:27,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964223123] [2023-08-30 05:28:27,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:27,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:27,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:27,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964223123] [2023-08-30 05:28:27,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964223123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:27,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:27,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:28:27,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007731899] [2023-08-30 05:28:27,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:28:27,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:28:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:28:27,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:27,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:28:27,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:27,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:27,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:28,068 INFO L130 PetriNetUnfolder]: 495/775 cut-off events. [2023-08-30 05:28:28,068 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-08-30 05:28:28,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 775 events. 495/775 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3367 event pairs, 139 based on Foata normal form. 96/867 useless extension candidates. Maximal degree in co-relation 1810. Up to 388 conditions per place. [2023-08-30 05:28:28,071 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 54 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2023-08-30 05:28:28,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 304 flow [2023-08-30 05:28:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:28:28,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:28:28,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-08-30 05:28:28,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 05:28:28,074 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-08-30 05:28:28,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-08-30 05:28:28,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:28,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-08-30 05:28:28,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 05:28:28,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 05:28:28,077 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 05:28:28,078 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 5 states and 560 transitions. [2023-08-30 05:28:28,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 304 flow [2023-08-30 05:28:28,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:28,079 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 125 flow [2023-08-30 05:28:28,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-30 05:28:28,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-30 05:28:28,080 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 125 flow [2023-08-30 05:28:28,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:28:28,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:28,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:28,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:28:28,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:28,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1936959650, now seen corresponding path program 1 times [2023-08-30 05:28:28,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:28,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749157398] [2023-08-30 05:28:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749157398] [2023-08-30 05:28:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749157398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:28,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:28,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:28:28,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652564827] [2023-08-30 05:28:28,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:28,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:28:28,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:28:28,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:28:28,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-30 05:28:28,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:28,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:28,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-30 05:28:28,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:28,351 INFO L130 PetriNetUnfolder]: 496/780 cut-off events. [2023-08-30 05:28:28,351 INFO L131 PetriNetUnfolder]: For 900/1011 co-relation queries the response was YES. [2023-08-30 05:28:28,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 780 events. 496/780 cut-off events. For 900/1011 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3342 event pairs, 133 based on Foata normal form. 115/865 useless extension candidates. Maximal degree in co-relation 2363. Up to 477 conditions per place. [2023-08-30 05:28:28,355 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 39 selfloop transitions, 5 changer transitions 7/54 dead transitions. [2023-08-30 05:28:28,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 317 flow [2023-08-30 05:28:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:28:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:28:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2023-08-30 05:28:28,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-30 05:28:28,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2023-08-30 05:28:28,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2023-08-30 05:28:28,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:28,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2023-08-30 05:28:28,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:28,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:28,361 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:28,361 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 125 flow. Second operand 4 states and 456 transitions. [2023-08-30 05:28:28,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 317 flow [2023-08-30 05:28:28,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 307 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:28,367 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 151 flow [2023-08-30 05:28:28,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-08-30 05:28:28,369 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-30 05:28:28,369 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 151 flow [2023-08-30 05:28:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:28,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:28,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:28,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:28:28,370 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:28,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:28,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1363882676, now seen corresponding path program 2 times [2023-08-30 05:28:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:28,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315673368] [2023-08-30 05:28:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:28,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:28,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:28,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315673368] [2023-08-30 05:28:28,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315673368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:28,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:28,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:28:28,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516305673] [2023-08-30 05:28:28,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:28:28,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:28:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:28:28,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:28,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:28:28,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:28,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:28,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:28,665 INFO L130 PetriNetUnfolder]: 599/997 cut-off events. [2023-08-30 05:28:28,666 INFO L131 PetriNetUnfolder]: For 2266/2358 co-relation queries the response was YES. [2023-08-30 05:28:28,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 997 events. 599/997 cut-off events. For 2266/2358 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4522 event pairs, 205 based on Foata normal form. 122/1103 useless extension candidates. Maximal degree in co-relation 3218. Up to 559 conditions per place. [2023-08-30 05:28:28,671 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 59 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-08-30 05:28:28,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 437 flow [2023-08-30 05:28:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:28:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:28:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-30 05:28:28,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2023-08-30 05:28:28,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-30 05:28:28,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-30 05:28:28,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:28,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-30 05:28:28,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 05:28:28,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 05:28:28,678 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 05:28:28,678 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 151 flow. Second operand 5 states and 556 transitions. [2023-08-30 05:28:28,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 437 flow [2023-08-30 05:28:28,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 428 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:28,682 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 206 flow [2023-08-30 05:28:28,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-08-30 05:28:28,683 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-30 05:28:28,683 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 206 flow [2023-08-30 05:28:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:28:28,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:28,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:28,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:28:28,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:28,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:28,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1675666900, now seen corresponding path program 3 times [2023-08-30 05:28:28,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:28,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621035801] [2023-08-30 05:28:28,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:28,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:28,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621035801] [2023-08-30 05:28:28,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621035801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:28,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:28,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:28:28,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364422282] [2023-08-30 05:28:28,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:28,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:28:28,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:28:28,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:28:28,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-30 05:28:28,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:28,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:28,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-30 05:28:28,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:28,950 INFO L130 PetriNetUnfolder]: 888/1431 cut-off events. [2023-08-30 05:28:28,950 INFO L131 PetriNetUnfolder]: For 5137/5529 co-relation queries the response was YES. [2023-08-30 05:28:28,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 1431 events. 888/1431 cut-off events. For 5137/5529 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7331 event pairs, 364 based on Foata normal form. 284/1639 useless extension candidates. Maximal degree in co-relation 5805. Up to 828 conditions per place. [2023-08-30 05:28:28,959 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 50 selfloop transitions, 12 changer transitions 5/71 dead transitions. [2023-08-30 05:28:28,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 551 flow [2023-08-30 05:28:28,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:28:28,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:28:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-08-30 05:28:28,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100446428571429 [2023-08-30 05:28:28,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-08-30 05:28:28,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-08-30 05:28:28,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:28,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-08-30 05:28:28,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 05:28:28,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:28,965 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:28,965 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 206 flow. Second operand 4 states and 457 transitions. [2023-08-30 05:28:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 551 flow [2023-08-30 05:28:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 534 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:28,970 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 336 flow [2023-08-30 05:28:28,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-30 05:28:28,971 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-30 05:28:28,971 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 336 flow [2023-08-30 05:28:28,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:28,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:28,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:28,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:28:28,972 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:28,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:28,972 INFO L85 PathProgramCache]: Analyzing trace with hash 189967031, now seen corresponding path program 1 times [2023-08-30 05:28:28,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:28,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392096843] [2023-08-30 05:28:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:28,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:29,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:29,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:29,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392096843] [2023-08-30 05:28:29,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392096843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:29,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:29,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:28:29,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874982785] [2023-08-30 05:28:29,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:29,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:28:29,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:29,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:28:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:28:29,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-30 05:28:29,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:29,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:29,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-30 05:28:29,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:29,236 INFO L130 PetriNetUnfolder]: 902/1457 cut-off events. [2023-08-30 05:28:29,236 INFO L131 PetriNetUnfolder]: For 8142/8489 co-relation queries the response was YES. [2023-08-30 05:28:29,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6797 conditions, 1457 events. 902/1457 cut-off events. For 8142/8489 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7284 event pairs, 319 based on Foata normal form. 234/1633 useless extension candidates. Maximal degree in co-relation 6782. Up to 1113 conditions per place. [2023-08-30 05:28:29,247 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 49 selfloop transitions, 8 changer transitions 10/71 dead transitions. [2023-08-30 05:28:29,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 671 flow [2023-08-30 05:28:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:28:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:28:29,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-08-30 05:28:29,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066964285714286 [2023-08-30 05:28:29,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-08-30 05:28:29,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-08-30 05:28:29,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:29,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-08-30 05:28:29,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 05:28:29,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:29,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:29,253 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 336 flow. Second operand 4 states and 454 transitions. [2023-08-30 05:28:29,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 671 flow [2023-08-30 05:28:29,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:29,260 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 385 flow [2023-08-30 05:28:29,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-08-30 05:28:29,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-30 05:28:29,261 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 385 flow [2023-08-30 05:28:29,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:29,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:29,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:29,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:28:29,262 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:29,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:29,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1022665134, now seen corresponding path program 4 times [2023-08-30 05:28:29,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:29,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250621855] [2023-08-30 05:28:29,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:29,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:29,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250621855] [2023-08-30 05:28:29,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250621855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:29,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:29,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:28:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041469353] [2023-08-30 05:28:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:29,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:28:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:28:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:28:29,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-30 05:28:29,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 05:28:29,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:29,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-30 05:28:29,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:29,614 INFO L130 PetriNetUnfolder]: 1104/1792 cut-off events. [2023-08-30 05:28:29,614 INFO L131 PetriNetUnfolder]: For 10126/10391 co-relation queries the response was YES. [2023-08-30 05:28:29,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8337 conditions, 1792 events. 1104/1792 cut-off events. For 10126/10391 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 9396 event pairs, 336 based on Foata normal form. 130/1855 useless extension candidates. Maximal degree in co-relation 8320. Up to 938 conditions per place. [2023-08-30 05:28:29,628 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 69 selfloop transitions, 19 changer transitions 19/109 dead transitions. [2023-08-30 05:28:29,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 1087 flow [2023-08-30 05:28:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:28:29,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:28:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 663 transitions. [2023-08-30 05:28:29,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49330357142857145 [2023-08-30 05:28:29,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 663 transitions. [2023-08-30 05:28:29,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 663 transitions. [2023-08-30 05:28:29,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:29,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 663 transitions. [2023-08-30 05:28:29,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states 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 05:28:29,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 05:28:29,636 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 05:28:29,636 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 385 flow. Second operand 6 states and 663 transitions. [2023-08-30 05:28:29,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 1087 flow [2023-08-30 05:28:29,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 1040 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-30 05:28:29,647 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 568 flow [2023-08-30 05:28:29,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-08-30 05:28:29,648 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-30 05:28:29,648 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 568 flow [2023-08-30 05:28:29,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 05:28:29,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:29,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 05:28:29,649 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:29,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -962485018, now seen corresponding path program 2 times [2023-08-30 05:28:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406967276] [2023-08-30 05:28:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:29,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:29,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:29,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406967276] [2023-08-30 05:28:29,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406967276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:29,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:29,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:28:29,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354970180] [2023-08-30 05:28:29,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:29,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:28:29,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:29,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:28:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:28:29,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:29,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:28:29,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:29,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:29,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:30,048 INFO L130 PetriNetUnfolder]: 996/1596 cut-off events. [2023-08-30 05:28:30,048 INFO L131 PetriNetUnfolder]: For 9777/9946 co-relation queries the response was YES. [2023-08-30 05:28:30,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 1596 events. 996/1596 cut-off events. For 9777/9946 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7635 event pairs, 368 based on Foata normal form. 118/1683 useless extension candidates. Maximal degree in co-relation 8127. Up to 966 conditions per place. [2023-08-30 05:28:30,062 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 52 selfloop transitions, 12 changer transitions 24/90 dead transitions. [2023-08-30 05:28:30,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 949 flow [2023-08-30 05:28:30,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:28:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:28:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-30 05:28:30,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2023-08-30 05:28:30,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-30 05:28:30,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-30 05:28:30,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:30,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-30 05:28:30,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states 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 05:28:30,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 05:28:30,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states 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 05:28:30,069 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 568 flow. Second operand 5 states and 556 transitions. [2023-08-30 05:28:30,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 949 flow [2023-08-30 05:28:30,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 909 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 05:28:30,081 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 585 flow [2023-08-30 05:28:30,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-08-30 05:28:30,082 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-30 05:28:30,082 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 585 flow [2023-08-30 05:28:30,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 05:28:30,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:30,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:30,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 05:28:30,083 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:30,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -148083577, now seen corresponding path program 2 times [2023-08-30 05:28:30,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:30,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275544581] [2023-08-30 05:28:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:30,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:30,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:30,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275544581] [2023-08-30 05:28:30,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275544581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:28:30,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:28:30,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:28:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978480852] [2023-08-30 05:28:30,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:30,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:28:30,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:28:30,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:28:30,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-30 05:28:30,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:30,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:30,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-30 05:28:30,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:30,332 INFO L130 PetriNetUnfolder]: 825/1235 cut-off events. [2023-08-30 05:28:30,333 INFO L131 PetriNetUnfolder]: For 12504/12806 co-relation queries the response was YES. [2023-08-30 05:28:30,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 1235 events. 825/1235 cut-off events. For 12504/12806 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5379 event pairs, 268 based on Foata normal form. 190/1382 useless extension candidates. Maximal degree in co-relation 7243. Up to 785 conditions per place. [2023-08-30 05:28:30,356 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 51 selfloop transitions, 26 changer transitions 6/88 dead transitions. [2023-08-30 05:28:30,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 1108 flow [2023-08-30 05:28:30,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:28:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:28:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-08-30 05:28:30,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022321428571429 [2023-08-30 05:28:30,358 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-08-30 05:28:30,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-08-30 05:28:30,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:30,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-08-30 05:28:30,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 05:28:30,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:30,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:30,362 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 585 flow. Second operand 4 states and 450 transitions. [2023-08-30 05:28:30,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 1108 flow [2023-08-30 05:28:30,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 998 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-08-30 05:28:30,377 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 779 flow [2023-08-30 05:28:30,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=779, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-30 05:28:30,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-30 05:28:30,378 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 779 flow [2023-08-30 05:28:30,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:30,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:30,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:30,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 05:28:30,379 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:30,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:30,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2001982109, now seen corresponding path program 1 times [2023-08-30 05:28:30,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:30,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151760468] [2023-08-30 05:28:30,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:30,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:30,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:30,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:30,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151760468] [2023-08-30 05:28:30,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151760468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:30,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858661644] [2023-08-30 05:28:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:30,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:30,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:30,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:30,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:28:30,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:30,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:28:30,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:30,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:30,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:30,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858661644] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:30,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:28:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-08-30 05:28:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723168375] [2023-08-30 05:28:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:28:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:28:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:28:30,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:28:30,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-30 05:28:30,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 779 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 05:28:30,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:30,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-30 05:28:30,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:30,933 INFO L130 PetriNetUnfolder]: 896/1303 cut-off events. [2023-08-30 05:28:30,934 INFO L131 PetriNetUnfolder]: For 11458/12041 co-relation queries the response was YES. [2023-08-30 05:28:30,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 1303 events. 896/1303 cut-off events. For 11458/12041 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5233 event pairs, 140 based on Foata normal form. 153/1419 useless extension candidates. Maximal degree in co-relation 7812. Up to 1094 conditions per place. [2023-08-30 05:28:30,947 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 70 selfloop transitions, 14 changer transitions 1/91 dead transitions. [2023-08-30 05:28:30,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 1174 flow [2023-08-30 05:28:30,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:28:30,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:28:30,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-08-30 05:28:30,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011160714285714 [2023-08-30 05:28:30,949 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-08-30 05:28:30,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-08-30 05:28:30,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:30,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-08-30 05:28:30,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:30,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:30,953 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:30,953 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 779 flow. Second operand 4 states and 449 transitions. [2023-08-30 05:28:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 1174 flow [2023-08-30 05:28:30,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 1141 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 05:28:30,967 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 844 flow [2023-08-30 05:28:30,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=844, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-08-30 05:28:30,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-30 05:28:30,968 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 844 flow [2023-08-30 05:28:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states 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 05:28:30,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:30,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:30,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:31,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-30 05:28:31,174 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:31,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash 187310563, now seen corresponding path program 2 times [2023-08-30 05:28:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766205682] [2023-08-30 05:28:31,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:31,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:31,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:31,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766205682] [2023-08-30 05:28:31,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766205682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:31,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231097266] [2023-08-30 05:28:31,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:28:31,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:31,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:31,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:31,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:28:31,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:28:31,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:31,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:28:31,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:31,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:31,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231097266] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:31,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:31,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-08-30 05:28:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34008681] [2023-08-30 05:28:31,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:31,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:28:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:28:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:28:31,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-30 05:28:31,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 844 flow. Second operand has 7 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 05:28:31,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:31,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-30 05:28:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:31,887 INFO L130 PetriNetUnfolder]: 1246/1813 cut-off events. [2023-08-30 05:28:31,887 INFO L131 PetriNetUnfolder]: For 16262/16395 co-relation queries the response was YES. [2023-08-30 05:28:31,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 1813 events. 1246/1813 cut-off events. For 16262/16395 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7636 event pairs, 240 based on Foata normal form. 131/1923 useless extension candidates. Maximal degree in co-relation 11022. Up to 961 conditions per place. [2023-08-30 05:28:31,903 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 102 selfloop transitions, 50 changer transitions 3/159 dead transitions. [2023-08-30 05:28:31,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 159 transitions, 2114 flow [2023-08-30 05:28:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:28:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:28:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 869 transitions. [2023-08-30 05:28:31,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849330357142857 [2023-08-30 05:28:31,907 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 869 transitions. [2023-08-30 05:28:31,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 869 transitions. [2023-08-30 05:28:31,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:31,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 869 transitions. [2023-08-30 05:28:31,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.625) internal successors, (869), 8 states have internal predecessors, (869), 0 states have call successors, (0), 0 states 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 05:28:31,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 224.0) internal successors, (2016), 9 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 05:28:31,912 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 224.0) internal successors, (2016), 9 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states 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 05:28:31,913 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 844 flow. Second operand 8 states and 869 transitions. [2023-08-30 05:28:31,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 159 transitions, 2114 flow [2023-08-30 05:28:31,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 159 transitions, 2078 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 05:28:31,929 INFO L231 Difference]: Finished difference. Result has 73 places, 101 transitions, 1468 flow [2023-08-30 05:28:31,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1468, PETRI_PLACES=73, PETRI_TRANSITIONS=101} [2023-08-30 05:28:31,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-30 05:28:31,930 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 101 transitions, 1468 flow [2023-08-30 05:28:31,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 05:28:31,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:31,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:31,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:32,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 05:28:32,136 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:32,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash -800491465, now seen corresponding path program 3 times [2023-08-30 05:28:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843722985] [2023-08-30 05:28:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843722985] [2023-08-30 05:28:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843722985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:32,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559315456] [2023-08-30 05:28:32,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:28:32,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:32,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:32,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:32,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:28:32,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:28:32,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:32,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:28:32,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:32,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:32,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559315456] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:32,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:32,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-30 05:28:32,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043551329] [2023-08-30 05:28:32,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:32,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:28:32,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:32,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:28:32,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:28:32,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-30 05:28:32,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 101 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 05:28:32,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:32,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-30 05:28:32,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:32,804 INFO L130 PetriNetUnfolder]: 1242/1776 cut-off events. [2023-08-30 05:28:32,804 INFO L131 PetriNetUnfolder]: For 20873/21017 co-relation queries the response was YES. [2023-08-30 05:28:32,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12037 conditions, 1776 events. 1242/1776 cut-off events. For 20873/21017 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7181 event pairs, 254 based on Foata normal form. 147/1897 useless extension candidates. Maximal degree in co-relation 12012. Up to 1120 conditions per place. [2023-08-30 05:28:32,821 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 80 selfloop transitions, 61 changer transitions 2/147 dead transitions. [2023-08-30 05:28:32,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 147 transitions, 2293 flow [2023-08-30 05:28:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:28:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:28:32,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-08-30 05:28:32,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2023-08-30 05:28:32,825 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-08-30 05:28:32,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-08-30 05:28:32,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:32,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-08-30 05:28:32,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states 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 05:28:32,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 05:28:32,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states 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 05:28:32,830 INFO L175 Difference]: Start difference. First operand has 73 places, 101 transitions, 1468 flow. Second operand 6 states and 651 transitions. [2023-08-30 05:28:32,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 147 transitions, 2293 flow [2023-08-30 05:28:32,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 147 transitions, 2269 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-30 05:28:32,854 INFO L231 Difference]: Finished difference. Result has 81 places, 119 transitions, 1973 flow [2023-08-30 05:28:32,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1973, PETRI_PLACES=81, PETRI_TRANSITIONS=119} [2023-08-30 05:28:32,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-30 05:28:32,855 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 119 transitions, 1973 flow [2023-08-30 05:28:32,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 05:28:32,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:32,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:32,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:33,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:33,064 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:33,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:33,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1587532899, now seen corresponding path program 1 times [2023-08-30 05:28:33,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:33,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690660590] [2023-08-30 05:28:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:33,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:33,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:33,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690660590] [2023-08-30 05:28:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690660590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007958748] [2023-08-30 05:28:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:33,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:33,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:33,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:28:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:33,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:28:33,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:33,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:33,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:33,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007958748] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:33,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:33,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2023-08-30 05:28:33,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360729545] [2023-08-30 05:28:33,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:33,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 05:28:33,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:33,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 05:28:33,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-30 05:28:33,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:33,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 119 transitions, 1973 flow. Second operand has 9 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 05:28:33,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:33,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:33,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:34,175 INFO L130 PetriNetUnfolder]: 1602/2283 cut-off events. [2023-08-30 05:28:34,175 INFO L131 PetriNetUnfolder]: For 29474/30145 co-relation queries the response was YES. [2023-08-30 05:28:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16239 conditions, 2283 events. 1602/2283 cut-off events. For 29474/30145 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9487 event pairs, 64 based on Foata normal form. 150/2302 useless extension candidates. Maximal degree in co-relation 16210. Up to 1701 conditions per place. [2023-08-30 05:28:34,197 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 136 selfloop transitions, 57 changer transitions 2/208 dead transitions. [2023-08-30 05:28:34,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 208 transitions, 3054 flow [2023-08-30 05:28:34,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:28:34,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:28:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 998 transitions. [2023-08-30 05:28:34,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503968253968256 [2023-08-30 05:28:34,201 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 998 transitions. [2023-08-30 05:28:34,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 998 transitions. [2023-08-30 05:28:34,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:34,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 998 transitions. [2023-08-30 05:28:34,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 05:28:34,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:34,207 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:34,207 INFO L175 Difference]: Start difference. First operand has 81 places, 119 transitions, 1973 flow. Second operand 9 states and 998 transitions. [2023-08-30 05:28:34,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 208 transitions, 3054 flow [2023-08-30 05:28:34,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 208 transitions, 2839 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-08-30 05:28:34,246 INFO L231 Difference]: Finished difference. Result has 90 places, 152 transitions, 2473 flow [2023-08-30 05:28:34,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2473, PETRI_PLACES=90, PETRI_TRANSITIONS=152} [2023-08-30 05:28:34,247 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-30 05:28:34,247 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 152 transitions, 2473 flow [2023-08-30 05:28:34,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states 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 05:28:34,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:34,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:34,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:34,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:34,457 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:34,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:34,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1033459943, now seen corresponding path program 2 times [2023-08-30 05:28:34,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199015270] [2023-08-30 05:28:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199015270] [2023-08-30 05:28:34,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199015270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:34,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185778694] [2023-08-30 05:28:34,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:28:34,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:34,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:34,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:34,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:28:34,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:28:34,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:34,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:28:34,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:34,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:35,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185778694] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:35,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:35,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-30 05:28:35,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679771787] [2023-08-30 05:28:35,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:35,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:28:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:35,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:28:35,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:28:35,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:35,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 152 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 104.18181818181819) internal successors, (1146), 11 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states 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 05:28:35,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:35,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:35,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:35,735 INFO L130 PetriNetUnfolder]: 1988/2855 cut-off events. [2023-08-30 05:28:35,735 INFO L131 PetriNetUnfolder]: For 37419/38013 co-relation queries the response was YES. [2023-08-30 05:28:35,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20449 conditions, 2855 events. 1988/2855 cut-off events. For 37419/38013 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 12526 event pairs, 202 based on Foata normal form. 160/2886 useless extension candidates. Maximal degree in co-relation 20416. Up to 2205 conditions per place. [2023-08-30 05:28:35,763 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 159 selfloop transitions, 59 changer transitions 2/233 dead transitions. [2023-08-30 05:28:35,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 233 transitions, 3455 flow [2023-08-30 05:28:35,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:28:35,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:28:35,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1002 transitions. [2023-08-30 05:28:35,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-08-30 05:28:35,767 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1002 transitions. [2023-08-30 05:28:35,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1002 transitions. [2023-08-30 05:28:35,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:35,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1002 transitions. [2023-08-30 05:28:35,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.33333333333333) internal successors, (1002), 9 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states 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 05:28:35,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:35,772 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:35,772 INFO L175 Difference]: Start difference. First operand has 90 places, 152 transitions, 2473 flow. Second operand 9 states and 1002 transitions. [2023-08-30 05:28:35,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 233 transitions, 3455 flow [2023-08-30 05:28:35,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 233 transitions, 3201 flow, removed 115 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:35,819 INFO L231 Difference]: Finished difference. Result has 100 places, 173 transitions, 2729 flow [2023-08-30 05:28:35,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2729, PETRI_PLACES=100, PETRI_TRANSITIONS=173} [2023-08-30 05:28:35,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2023-08-30 05:28:35,820 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 173 transitions, 2729 flow [2023-08-30 05:28:35,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 104.18181818181819) internal successors, (1146), 11 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states 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 05:28:35,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:35,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:35,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:36,027 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:36,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1838073433, now seen corresponding path program 3 times [2023-08-30 05:28:36,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:36,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349089431] [2023-08-30 05:28:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:36,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349089431] [2023-08-30 05:28:36,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349089431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270619591] [2023-08-30 05:28:36,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:28:36,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:36,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:36,293 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:36,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:28:36,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:28:36,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:36,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:28:36,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:36,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:36,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270619591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:36,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:36,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-30 05:28:36,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934720316] [2023-08-30 05:28:36,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:36,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 05:28:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 05:28:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:28:36,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:36,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 173 transitions, 2729 flow. Second operand has 11 states, 11 states have (on average 104.36363636363636) internal successors, (1148), 11 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 05:28:36,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:36,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:36,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:37,398 INFO L130 PetriNetUnfolder]: 2508/3609 cut-off events. [2023-08-30 05:28:37,398 INFO L131 PetriNetUnfolder]: For 47442/48154 co-relation queries the response was YES. [2023-08-30 05:28:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25301 conditions, 3609 events. 2508/3609 cut-off events. For 47442/48154 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16414 event pairs, 384 based on Foata normal form. 180/3628 useless extension candidates. Maximal degree in co-relation 25264. Up to 2953 conditions per place. [2023-08-30 05:28:37,438 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 190 selfloop transitions, 67 changer transitions 2/272 dead transitions. [2023-08-30 05:28:37,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 272 transitions, 4192 flow [2023-08-30 05:28:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:28:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:28:37,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 998 transitions. [2023-08-30 05:28:37,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503968253968256 [2023-08-30 05:28:37,442 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 998 transitions. [2023-08-30 05:28:37,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 998 transitions. [2023-08-30 05:28:37,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:37,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 998 transitions. [2023-08-30 05:28:37,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states 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 05:28:37,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:37,448 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:37,449 INFO L175 Difference]: Start difference. First operand has 100 places, 173 transitions, 2729 flow. Second operand 9 states and 998 transitions. [2023-08-30 05:28:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 272 transitions, 4192 flow [2023-08-30 05:28:37,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 272 transitions, 3967 flow, removed 101 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:37,506 INFO L231 Difference]: Finished difference. Result has 111 places, 216 transitions, 3504 flow [2023-08-30 05:28:37,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3504, PETRI_PLACES=111, PETRI_TRANSITIONS=216} [2023-08-30 05:28:37,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-30 05:28:37,508 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 216 transitions, 3504 flow [2023-08-30 05:28:37,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 104.36363636363636) internal successors, (1148), 11 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states 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 05:28:37,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:37,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:37,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 05:28:37,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:37,715 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:37,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:37,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1140109893, now seen corresponding path program 4 times [2023-08-30 05:28:37,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:37,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780463234] [2023-08-30 05:28:37,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:37,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:37,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780463234] [2023-08-30 05:28:37,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780463234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:37,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996671502] [2023-08-30 05:28:37,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:28:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:37,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:37,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 05:28:38,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:28:38,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:38,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:28:38,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:38,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:38,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996671502] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:38,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:38,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-30 05:28:38,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843618882] [2023-08-30 05:28:38,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:38,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:28:38,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:28:38,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:28:38,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:38,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 216 transitions, 3504 flow. Second operand has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:38,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:38,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:38,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:39,058 INFO L130 PetriNetUnfolder]: 2816/4061 cut-off events. [2023-08-30 05:28:39,059 INFO L131 PetriNetUnfolder]: For 53826/54507 co-relation queries the response was YES. [2023-08-30 05:28:39,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28263 conditions, 4061 events. 2816/4061 cut-off events. For 53826/54507 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 18923 event pairs, 516 based on Foata normal form. 174/4068 useless extension candidates. Maximal degree in co-relation 28221. Up to 3537 conditions per place. [2023-08-30 05:28:39,165 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 205 selfloop transitions, 65 changer transitions 2/285 dead transitions. [2023-08-30 05:28:39,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 285 transitions, 4610 flow [2023-08-30 05:28:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:28:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:28:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2023-08-30 05:28:39,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-30 05:28:39,175 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2023-08-30 05:28:39,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2023-08-30 05:28:39,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:39,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2023-08-30 05:28:39,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.22222222222223) internal successors, (992), 9 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 05:28:39,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:39,188 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:39,188 INFO L175 Difference]: Start difference. First operand has 111 places, 216 transitions, 3504 flow. Second operand 9 states and 992 transitions. [2023-08-30 05:28:39,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 285 transitions, 4610 flow [2023-08-30 05:28:39,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 285 transitions, 4272 flow, removed 157 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:39,260 INFO L231 Difference]: Finished difference. Result has 121 places, 235 transitions, 3710 flow [2023-08-30 05:28:39,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3710, PETRI_PLACES=121, PETRI_TRANSITIONS=235} [2023-08-30 05:28:39,261 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2023-08-30 05:28:39,261 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 235 transitions, 3710 flow [2023-08-30 05:28:39,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:39,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:39,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:39,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:39,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:39,469 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:39,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:39,470 INFO L85 PathProgramCache]: Analyzing trace with hash 964793071, now seen corresponding path program 5 times [2023-08-30 05:28:39,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:39,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373550409] [2023-08-30 05:28:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373550409] [2023-08-30 05:28:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373550409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343470717] [2023-08-30 05:28:39,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:28:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:39,733 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:39,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 05:28:39,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:28:39,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:39,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:28:39,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:39,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:39,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:40,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343470717] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:40,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:40,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-30 05:28:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50441142] [2023-08-30 05:28:40,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:40,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:28:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:28:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:28:40,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:40,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 235 transitions, 3710 flow. Second operand has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:40,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:40,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:40,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:41,213 INFO L130 PetriNetUnfolder]: 3210/4633 cut-off events. [2023-08-30 05:28:41,214 INFO L131 PetriNetUnfolder]: For 58507/59236 co-relation queries the response was YES. [2023-08-30 05:28:41,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31483 conditions, 4633 events. 3210/4633 cut-off events. For 58507/59236 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 22269 event pairs, 660 based on Foata normal form. 208/4668 useless extension candidates. Maximal degree in co-relation 31437. Up to 4109 conditions per place. [2023-08-30 05:28:41,261 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 244 selfloop transitions, 60 changer transitions 2/319 dead transitions. [2023-08-30 05:28:41,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 319 transitions, 5206 flow [2023-08-30 05:28:41,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:28:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:28:41,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 990 transitions. [2023-08-30 05:28:41,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-08-30 05:28:41,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 990 transitions. [2023-08-30 05:28:41,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 990 transitions. [2023-08-30 05:28:41,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:41,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 990 transitions. [2023-08-30 05:28:41,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states 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 05:28:41,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:41,269 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:41,269 INFO L175 Difference]: Start difference. First operand has 121 places, 235 transitions, 3710 flow. Second operand 9 states and 990 transitions. [2023-08-30 05:28:41,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 319 transitions, 5206 flow [2023-08-30 05:28:41,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 319 transitions, 4904 flow, removed 124 selfloop flow, removed 2 redundant places. [2023-08-30 05:28:41,348 INFO L231 Difference]: Finished difference. Result has 131 places, 271 transitions, 4313 flow [2023-08-30 05:28:41,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4313, PETRI_PLACES=131, PETRI_TRANSITIONS=271} [2023-08-30 05:28:41,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2023-08-30 05:28:41,349 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 271 transitions, 4313 flow [2023-08-30 05:28:41,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:28:41,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:41,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:41,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:41,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 05:28:41,558 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:41,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:41,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1174161011, now seen corresponding path program 6 times [2023-08-30 05:28:41,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:41,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352631361] [2023-08-30 05:28:41,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:41,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:41,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:41,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:41,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:41,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352631361] [2023-08-30 05:28:41,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352631361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:41,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320468758] [2023-08-30 05:28:41,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:28:41,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:41,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:41,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:41,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 05:28:41,889 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 05:28:41,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:41,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:28:41,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:41,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:42,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320468758] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:42,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:42,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-30 05:28:42,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255316959] [2023-08-30 05:28:42,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:42,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:28:42,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:28:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:28:42,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:42,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 271 transitions, 4313 flow. Second operand has 10 states, 10 states have (on average 104.6) internal successors, (1046), 10 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 05:28:42,130 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:42,130 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:42,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:43,139 INFO L130 PetriNetUnfolder]: 3544/5123 cut-off events. [2023-08-30 05:28:43,140 INFO L131 PetriNetUnfolder]: For 67225/67962 co-relation queries the response was YES. [2023-08-30 05:28:43,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34738 conditions, 5123 events. 3544/5123 cut-off events. For 67225/67962 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 25150 event pairs, 812 based on Foata normal form. 222/5174 useless extension candidates. Maximal degree in co-relation 34687. Up to 4567 conditions per place. [2023-08-30 05:28:43,196 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 265 selfloop transitions, 60 changer transitions 2/340 dead transitions. [2023-08-30 05:28:43,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 340 transitions, 5599 flow [2023-08-30 05:28:43,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:28:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:28:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2023-08-30 05:28:43,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-30 05:28:43,199 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2023-08-30 05:28:43,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2023-08-30 05:28:43,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:43,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2023-08-30 05:28:43,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.22222222222223) internal successors, (992), 9 states have internal predecessors, (992), 0 states have call successors, (0), 0 states 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 05:28:43,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:43,213 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states 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 05:28:43,213 INFO L175 Difference]: Start difference. First operand has 131 places, 271 transitions, 4313 flow. Second operand 9 states and 992 transitions. [2023-08-30 05:28:43,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 340 transitions, 5599 flow [2023-08-30 05:28:43,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 340 transitions, 5201 flow, removed 187 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:43,328 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 4509 flow [2023-08-30 05:28:43,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4509, PETRI_PLACES=141, PETRI_TRANSITIONS=290} [2023-08-30 05:28:43,329 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2023-08-30 05:28:43,329 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 4509 flow [2023-08-30 05:28:43,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.6) internal successors, (1046), 10 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 05:28:43,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:43,330 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:43,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:43,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 05:28:43,539 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:43,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:43,539 INFO L85 PathProgramCache]: Analyzing trace with hash -14383625, now seen corresponding path program 7 times [2023-08-30 05:28:43,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:43,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488966569] [2023-08-30 05:28:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:43,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:43,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488966569] [2023-08-30 05:28:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488966569] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676865974] [2023-08-30 05:28:43,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:28:43,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:43,695 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:43,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 05:28:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:43,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:28:43,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:43,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:43,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:43,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676865974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:43,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:43,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-08-30 05:28:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699577015] [2023-08-30 05:28:43,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:43,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:28:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:43,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:28:43,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:28:44,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:44,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 290 transitions, 4509 flow. Second operand has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 05:28:44,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:44,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:44,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:45,648 INFO L130 PetriNetUnfolder]: 6669/9752 cut-off events. [2023-08-30 05:28:45,648 INFO L131 PetriNetUnfolder]: For 117175/117636 co-relation queries the response was YES. [2023-08-30 05:28:45,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62864 conditions, 9752 events. 6669/9752 cut-off events. For 117175/117636 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 51785 event pairs, 1233 based on Foata normal form. 265/9957 useless extension candidates. Maximal degree in co-relation 62809. Up to 2777 conditions per place. [2023-08-30 05:28:45,750 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 409 selfloop transitions, 121 changer transitions 0/534 dead transitions. [2023-08-30 05:28:45,750 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 534 transitions, 8665 flow [2023-08-30 05:28:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:28:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:28:45,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1120 transitions. [2023-08-30 05:28:45,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 05:28:45,755 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1120 transitions. [2023-08-30 05:28:45,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1120 transitions. [2023-08-30 05:28:45,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:45,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1120 transitions. [2023-08-30 05:28:45,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:28:45,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 05:28:45,760 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 05:28:45,760 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 4509 flow. Second operand 10 states and 1120 transitions. [2023-08-30 05:28:45,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 534 transitions, 8665 flow [2023-08-30 05:28:45,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 534 transitions, 8055 flow, removed 280 selfloop flow, removed 2 redundant places. [2023-08-30 05:28:45,959 INFO L231 Difference]: Finished difference. Result has 155 places, 342 transitions, 5373 flow [2023-08-30 05:28:45,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=4134, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5373, PETRI_PLACES=155, PETRI_TRANSITIONS=342} [2023-08-30 05:28:45,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2023-08-30 05:28:45,960 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 342 transitions, 5373 flow [2023-08-30 05:28:45,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 05:28:45,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:45,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:45,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:46,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 05:28:46,167 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:46,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -618251952, now seen corresponding path program 8 times [2023-08-30 05:28:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239294824] [2023-08-30 05:28:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:46,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:46,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239294824] [2023-08-30 05:28:46,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239294824] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:46,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116390888] [2023-08-30 05:28:46,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:28:46,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:46,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:46,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 05:28:46,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:28:46,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:46,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:28:46,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:46,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:46,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:46,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:46,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116390888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:46,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:46,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 05:28:46,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94195727] [2023-08-30 05:28:46,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:46,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:28:46,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:28:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:28:46,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:28:46,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 342 transitions, 5373 flow. Second operand has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 12 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states 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 05:28:46,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:46,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:28:46,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:48,611 INFO L130 PetriNetUnfolder]: 7276/10859 cut-off events. [2023-08-30 05:28:48,611 INFO L131 PetriNetUnfolder]: For 163345/163868 co-relation queries the response was YES. [2023-08-30 05:28:48,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70560 conditions, 10859 events. 7276/10859 cut-off events. For 163345/163868 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 62403 event pairs, 1134 based on Foata normal form. 426/11239 useless extension candidates. Maximal degree in co-relation 70497. Up to 3800 conditions per place. [2023-08-30 05:28:48,703 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 593 selfloop transitions, 175 changer transitions 0/772 dead transitions. [2023-08-30 05:28:48,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 772 transitions, 12200 flow [2023-08-30 05:28:48,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 05:28:48,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 05:28:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1324 transitions. [2023-08-30 05:28:48,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49255952380952384 [2023-08-30 05:28:48,714 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1324 transitions. [2023-08-30 05:28:48,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1324 transitions. [2023-08-30 05:28:48,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:48,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1324 transitions. [2023-08-30 05:28:48,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 110.33333333333333) internal successors, (1324), 12 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states 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 05:28:48,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 05:28:48,720 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states 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 05:28:48,720 INFO L175 Difference]: Start difference. First operand has 155 places, 342 transitions, 5373 flow. Second operand 12 states and 1324 transitions. [2023-08-30 05:28:48,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 772 transitions, 12200 flow [2023-08-30 05:28:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 772 transitions, 12033 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-08-30 05:28:49,035 INFO L231 Difference]: Finished difference. Result has 170 places, 437 transitions, 7365 flow [2023-08-30 05:28:49,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=5238, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7365, PETRI_PLACES=170, PETRI_TRANSITIONS=437} [2023-08-30 05:28:49,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2023-08-30 05:28:49,035 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 437 transitions, 7365 flow [2023-08-30 05:28:49,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 12 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states 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 05:28:49,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:49,036 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:49,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 05:28:49,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 05:28:49,242 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:49,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1157066672, now seen corresponding path program 9 times [2023-08-30 05:28:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:49,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641295917] [2023-08-30 05:28:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:49,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:49,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:49,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641295917] [2023-08-30 05:28:49,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641295917] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:49,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191677784] [2023-08-30 05:28:49,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:28:49,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:49,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:49,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:49,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 05:28:49,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:28:49,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:49,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:28:49,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:49,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:49,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:28:49,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191677784] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:49,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:49,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-08-30 05:28:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353269099] [2023-08-30 05:28:49,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:49,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:28:49,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:28:49,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:28:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 224 [2023-08-30 05:28:49,732 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 437 transitions, 7365 flow. Second operand has 13 states, 13 states have (on average 100.61538461538461) internal successors, (1308), 13 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states 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 05:28:49,732 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:49,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 224 [2023-08-30 05:28:49,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:28:53,191 INFO L130 PetriNetUnfolder]: 10860/16217 cut-off events. [2023-08-30 05:28:53,191 INFO L131 PetriNetUnfolder]: For 277191/277191 co-relation queries the response was YES. [2023-08-30 05:28:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122864 conditions, 16217 events. 10860/16217 cut-off events. For 277191/277191 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 97967 event pairs, 1393 based on Foata normal form. 136/16353 useless extension candidates. Maximal degree in co-relation 122795. Up to 4681 conditions per place. [2023-08-30 05:28:53,372 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 520 selfloop transitions, 350 changer transitions 0/870 dead transitions. [2023-08-30 05:28:53,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 870 transitions, 16215 flow [2023-08-30 05:28:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-30 05:28:53,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-30 05:28:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2054 transitions. [2023-08-30 05:28:53,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826127819548872 [2023-08-30 05:28:53,376 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2054 transitions. [2023-08-30 05:28:53,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2054 transitions. [2023-08-30 05:28:53,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:28:53,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2054 transitions. [2023-08-30 05:28:53,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.10526315789474) internal successors, (2054), 19 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states 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 05:28:53,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 224.0) internal successors, (4480), 20 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 05:28:53,387 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 224.0) internal successors, (4480), 20 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states 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 05:28:53,387 INFO L175 Difference]: Start difference. First operand has 170 places, 437 transitions, 7365 flow. Second operand 19 states and 2054 transitions. [2023-08-30 05:28:53,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 870 transitions, 16215 flow [2023-08-30 05:28:54,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 870 transitions, 15393 flow, removed 309 selfloop flow, removed 1 redundant places. [2023-08-30 05:28:54,610 INFO L231 Difference]: Finished difference. Result has 199 places, 599 transitions, 11602 flow [2023-08-30 05:28:54,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=6933, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11602, PETRI_PLACES=199, PETRI_TRANSITIONS=599} [2023-08-30 05:28:54,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-08-30 05:28:54,611 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 599 transitions, 11602 flow [2023-08-30 05:28:54,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.61538461538461) internal successors, (1308), 13 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states 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 05:28:54,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:28:54,612 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:28:54,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 05:28:54,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 05:28:54,818 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:28:54,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:28:54,819 INFO L85 PathProgramCache]: Analyzing trace with hash -489516291, now seen corresponding path program 10 times [2023-08-30 05:28:54,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:28:54,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965185833] [2023-08-30 05:28:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:28:54,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:28:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:28:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:54,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:28:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965185833] [2023-08-30 05:28:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965185833] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:28:54,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957691147] [2023-08-30 05:28:54,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:28:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:28:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:28:54,953 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:28:54,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 05:28:55,048 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:28:55,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:28:55,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:28:55,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:28:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:55,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:28:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:28:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957691147] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:28:55,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:28:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-30 05:28:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232007103] [2023-08-30 05:28:55,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:28:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:28:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:28:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:28:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:28:55,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-30 05:28:55,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 599 transitions, 11602 flow. Second operand has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 05:28:55,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:28:55,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-30 05:28:55,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:00,989 INFO L130 PetriNetUnfolder]: 13212/19753 cut-off events. [2023-08-30 05:29:00,990 INFO L131 PetriNetUnfolder]: For 484622/484622 co-relation queries the response was YES. [2023-08-30 05:29:01,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172131 conditions, 19753 events. 13212/19753 cut-off events. For 484622/484622 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 124207 event pairs, 945 based on Foata normal form. 500/20253 useless extension candidates. Maximal degree in co-relation 172049. Up to 6379 conditions per place. [2023-08-30 05:29:01,205 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 853 selfloop transitions, 761 changer transitions 56/1670 dead transitions. [2023-08-30 05:29:01,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1670 transitions, 36603 flow [2023-08-30 05:29:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-30 05:29:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-30 05:29:01,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 5294 transitions. [2023-08-30 05:29:01,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634103641456583 [2023-08-30 05:29:01,211 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 5294 transitions. [2023-08-30 05:29:01,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 5294 transitions. [2023-08-30 05:29:01,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:29:01,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 5294 transitions. [2023-08-30 05:29:01,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 103.80392156862744) internal successors, (5294), 51 states have internal predecessors, (5294), 0 states have call successors, (0), 0 states 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 05:29:01,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 224.0) internal successors, (11648), 52 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states 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 05:29:01,233 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 224.0) internal successors, (11648), 52 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states 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 05:29:01,233 INFO L175 Difference]: Start difference. First operand has 199 places, 599 transitions, 11602 flow. Second operand 51 states and 5294 transitions. [2023-08-30 05:29:01,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1670 transitions, 36603 flow [2023-08-30 05:29:03,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1670 transitions, 34650 flow, removed 785 selfloop flow, removed 1 redundant places. [2023-08-30 05:29:03,702 INFO L231 Difference]: Finished difference. Result has 279 places, 1054 transitions, 23044 flow [2023-08-30 05:29:03,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=10552, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=23044, PETRI_PLACES=279, PETRI_TRANSITIONS=1054} [2023-08-30 05:29:03,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2023-08-30 05:29:03,704 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 1054 transitions, 23044 flow [2023-08-30 05:29:03,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states 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 05:29:03,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:29:03,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:29:03,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 05:29:03,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 05:29:03,910 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:29:03,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:29:03,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1282512432, now seen corresponding path program 11 times [2023-08-30 05:29:03,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:29:03,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200518927] [2023-08-30 05:29:03,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:29:03,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:29:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:29:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:29:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200518927] [2023-08-30 05:29:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200518927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:29:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561781618] [2023-08-30 05:29:04,078 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:29:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:04,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:29:04,081 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:29:04,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 05:29:04,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:29:04,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:29:04,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:29:04,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:29:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:04,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:29:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:04,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561781618] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:29:04,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:29:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-30 05:29:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111379929] [2023-08-30 05:29:04,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:29:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:29:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:29:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:29:04,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:29:04,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-30 05:29:04,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 1054 transitions, 23044 flow. Second operand has 17 states, 17 states have (on average 98.88235294117646) internal successors, (1681), 17 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states 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 05:29:04,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:29:04,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-30 05:29:04,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:14,643 INFO L130 PetriNetUnfolder]: 14807/22563 cut-off events. [2023-08-30 05:29:14,644 INFO L131 PetriNetUnfolder]: For 717652/717652 co-relation queries the response was YES. [2023-08-30 05:29:15,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218757 conditions, 22563 events. 14807/22563 cut-off events. For 717652/717652 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 150453 event pairs, 767 based on Foata normal form. 526/23089 useless extension candidates. Maximal degree in co-relation 218644. Up to 7959 conditions per place. [2023-08-30 05:29:15,206 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 1181 selfloop transitions, 1129 changer transitions 71/2381 dead transitions. [2023-08-30 05:29:15,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2381 transitions, 50258 flow [2023-08-30 05:29:15,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-08-30 05:29:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-08-30 05:29:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 11157 transitions. [2023-08-30 05:29:15,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654956608811749 [2023-08-30 05:29:15,218 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 11157 transitions. [2023-08-30 05:29:15,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 11157 transitions. [2023-08-30 05:29:15,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:29:15,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 11157 transitions. [2023-08-30 05:29:15,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 104.27102803738318) internal successors, (11157), 107 states have internal predecessors, (11157), 0 states have call successors, (0), 0 states 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 05:29:15,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 224.0) internal successors, (24192), 108 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states 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 05:29:15,261 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 224.0) internal successors, (24192), 108 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states 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 05:29:15,261 INFO L175 Difference]: Start difference. First operand has 279 places, 1054 transitions, 23044 flow. Second operand 107 states and 11157 transitions. [2023-08-30 05:29:15,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2381 transitions, 50258 flow [2023-08-30 05:29:22,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 2381 transitions, 44039 flow, removed 2459 selfloop flow, removed 8 redundant places. [2023-08-30 05:29:22,766 INFO L231 Difference]: Finished difference. Result has 430 places, 1445 transitions, 32059 flow [2023-08-30 05:29:22,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=19107, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=32059, PETRI_PLACES=430, PETRI_TRANSITIONS=1445} [2023-08-30 05:29:22,767 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2023-08-30 05:29:22,767 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1445 transitions, 32059 flow [2023-08-30 05:29:22,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 98.88235294117646) internal successors, (1681), 17 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states 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 05:29:22,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:29:22,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:29:22,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 05:29:22,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:22,974 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:29:22,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:29:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash -595300895, now seen corresponding path program 12 times [2023-08-30 05:29:22,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:29:22,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469157152] [2023-08-30 05:29:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:29:22,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:29:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:23,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:29:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469157152] [2023-08-30 05:29:23,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469157152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:29:23,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818967686] [2023-08-30 05:29:23,090 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:29:23,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:23,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:29:23,093 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:29:23,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 05:29:23,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:29:23,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:29:23,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:29:23,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:29:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:23,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:29:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:23,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818967686] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:29:23,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:29:23,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-08-30 05:29:23,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979010049] [2023-08-30 05:29:23,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:29:23,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:29:23,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:29:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:29:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:29:23,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-30 05:29:23,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1445 transitions, 32059 flow. Second operand has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 12 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 05:29:23,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:29:23,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-30 05:29:23,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:29:33,663 INFO L130 PetriNetUnfolder]: 15386/23331 cut-off events. [2023-08-30 05:29:33,663 INFO L131 PetriNetUnfolder]: For 922974/923153 co-relation queries the response was YES. [2023-08-30 05:29:34,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242435 conditions, 23331 events. 15386/23331 cut-off events. For 922974/923153 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 155087 event pairs, 2266 based on Foata normal form. 198/23464 useless extension candidates. Maximal degree in co-relation 242270. Up to 8733 conditions per place. [2023-08-30 05:29:34,206 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 1112 selfloop transitions, 777 changer transitions 0/1921 dead transitions. [2023-08-30 05:29:34,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1921 transitions, 47674 flow [2023-08-30 05:29:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 05:29:34,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 05:29:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1120 transitions. [2023-08-30 05:29:34,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-30 05:29:34,209 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1120 transitions. [2023-08-30 05:29:34,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1120 transitions. [2023-08-30 05:29:34,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:29:34,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1120 transitions. [2023-08-30 05:29:34,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states 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 05:29:34,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 05:29:34,214 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 05:29:34,214 INFO L175 Difference]: Start difference. First operand has 430 places, 1445 transitions, 32059 flow. Second operand 10 states and 1120 transitions. [2023-08-30 05:29:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1921 transitions, 47674 flow [2023-08-30 05:29:43,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1921 transitions, 39159 flow, removed 3216 selfloop flow, removed 15 redundant places. [2023-08-30 05:29:43,043 INFO L231 Difference]: Finished difference. Result has 426 places, 1554 transitions, 30441 flow [2023-08-30 05:29:43,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=25965, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30441, PETRI_PLACES=426, PETRI_TRANSITIONS=1554} [2023-08-30 05:29:43,044 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2023-08-30 05:29:43,044 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1554 transitions, 30441 flow [2023-08-30 05:29:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 12 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 05:29:43,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:29:43,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:29:43,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 05:29:43,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:43,249 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:29:43,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:29:43,249 INFO L85 PathProgramCache]: Analyzing trace with hash 2031438389, now seen corresponding path program 13 times [2023-08-30 05:29:43,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:29:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140148624] [2023-08-30 05:29:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:29:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:29:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:29:43,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140148624] [2023-08-30 05:29:43,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140148624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:29:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003722444] [2023-08-30 05:29:43,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:29:43,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:29:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:29:43,385 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:29:43,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 05:29:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:29:43,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:29:43,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:29:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:43,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:29:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:29:43,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003722444] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:29:43,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:29:43,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-30 05:29:43,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831702363] [2023-08-30 05:29:43,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:29:43,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:29:43,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:29:43,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:29:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:29:43,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-30 05:29:43,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1554 transitions, 30441 flow. Second operand has 14 states, 14 states have (on average 101.57142857142857) internal successors, (1422), 14 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states 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 05:29:43,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:29:43,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-30 05:29:43,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:30:01,458 INFO L130 PetriNetUnfolder]: 26105/40145 cut-off events. [2023-08-30 05:30:01,458 INFO L131 PetriNetUnfolder]: For 1408892/1409230 co-relation queries the response was YES. [2023-08-30 05:30:02,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370992 conditions, 40145 events. 26105/40145 cut-off events. For 1408892/1409230 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 299087 event pairs, 930 based on Foata normal form. 591/40722 useless extension candidates. Maximal degree in co-relation 370827. Up to 14403 conditions per place. [2023-08-30 05:30:02,733 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 2344 selfloop transitions, 1196 changer transitions 27/3610 dead transitions. [2023-08-30 05:30:02,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 3610 transitions, 78265 flow [2023-08-30 05:30:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-30 05:30:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-30 05:30:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3069 transitions. [2023-08-30 05:30:02,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893176020408163 [2023-08-30 05:30:02,737 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3069 transitions. [2023-08-30 05:30:02,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3069 transitions. [2023-08-30 05:30:02,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:30:02,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3069 transitions. [2023-08-30 05:30:02,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 109.60714285714286) internal successors, (3069), 28 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states 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 05:30:02,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states 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 05:30:02,745 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states 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 05:30:02,745 INFO L175 Difference]: Start difference. First operand has 426 places, 1554 transitions, 30441 flow. Second operand 28 states and 3069 transitions. [2023-08-30 05:30:02,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 3610 transitions, 78265 flow [2023-08-30 05:30:15,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 3610 transitions, 77188 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-30 05:30:15,624 INFO L231 Difference]: Finished difference. Result has 461 places, 2036 transitions, 42675 flow [2023-08-30 05:30:15,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=29447, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=42675, PETRI_PLACES=461, PETRI_TRANSITIONS=2036} [2023-08-30 05:30:15,626 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2023-08-30 05:30:15,626 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 2036 transitions, 42675 flow [2023-08-30 05:30:15,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 101.57142857142857) internal successors, (1422), 14 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states 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 05:30:15,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:30:15,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:30:15,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 05:30:15,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:15,832 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:30:15,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:30:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1947520715, now seen corresponding path program 14 times [2023-08-30 05:30:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:30:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668619210] [2023-08-30 05:30:15,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:30:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:30:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:30:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:30:15,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:30:15,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668619210] [2023-08-30 05:30:15,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668619210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:30:15,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328923002] [2023-08-30 05:30:15,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:30:15,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:30:15,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:30:15,956 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:30:15,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 05:30:16,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:30:16,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:30:16,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:30:16,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:30:16,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:30:16,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:30:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:30:16,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328923002] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:30:16,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:30:16,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-30 05:30:16,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987682516] [2023-08-30 05:30:16,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:30:16,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:30:16,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:30:16,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:30:16,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:30:16,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-30 05:30:16,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 2036 transitions, 42675 flow. Second operand has 15 states, 15 states have (on average 98.86666666666666) internal successors, (1483), 15 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states 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 05:30:16,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:30:16,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-30 05:30:16,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:30:42,104 INFO L130 PetriNetUnfolder]: 30083/45975 cut-off events. [2023-08-30 05:30:42,104 INFO L131 PetriNetUnfolder]: For 2011425/2011425 co-relation queries the response was YES. [2023-08-30 05:30:43,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475545 conditions, 45975 events. 30083/45975 cut-off events. For 2011425/2011425 co-relation queries the response was YES. Maximal size of possible extension queue 2043. Compared 342331 event pairs, 3786 based on Foata normal form. 1430/47405 useless extension candidates. Maximal degree in co-relation 475369. Up to 17887 conditions per place. [2023-08-30 05:30:44,245 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 1759 selfloop transitions, 1813 changer transitions 8/3580 dead transitions. [2023-08-30 05:30:44,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 3580 transitions, 82737 flow [2023-08-30 05:30:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-30 05:30:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-30 05:30:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6330 transitions. [2023-08-30 05:30:44,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47098214285714285 [2023-08-30 05:30:44,252 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6330 transitions. [2023-08-30 05:30:44,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6330 transitions. [2023-08-30 05:30:44,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:30:44,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6330 transitions. [2023-08-30 05:30:44,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 105.5) internal successors, (6330), 60 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states 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 05:30:44,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 224.0) internal successors, (13664), 61 states have internal predecessors, (13664), 0 states have call successors, (0), 0 states 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 05:30:44,270 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 224.0) internal successors, (13664), 61 states have internal predecessors, (13664), 0 states have call successors, (0), 0 states 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 05:30:44,270 INFO L175 Difference]: Start difference. First operand has 461 places, 2036 transitions, 42675 flow. Second operand 60 states and 6330 transitions. [2023-08-30 05:30:44,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 3580 transitions, 82737 flow [2023-08-30 05:31:11,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 3580 transitions, 79067 flow, removed 1185 selfloop flow, removed 5 redundant places. [2023-08-30 05:31:11,910 INFO L231 Difference]: Finished difference. Result has 544 places, 2619 transitions, 61880 flow [2023-08-30 05:31:11,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=39956, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=61880, PETRI_PLACES=544, PETRI_TRANSITIONS=2619} [2023-08-30 05:31:11,912 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2023-08-30 05:31:11,912 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 2619 transitions, 61880 flow [2023-08-30 05:31:11,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 98.86666666666666) internal successors, (1483), 15 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states 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 05:31:11,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:31:11,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:31:11,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 05:31:12,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:31:12,117 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:31:12,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:31:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1987505746, now seen corresponding path program 15 times [2023-08-30 05:31:12,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:31:12,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158157073] [2023-08-30 05:31:12,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:31:12,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:31:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:31:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:12,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:31:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158157073] [2023-08-30 05:31:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158157073] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:31:12,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037457881] [2023-08-30 05:31:12,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:31:12,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:31:12,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:31:12,261 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:31:12,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 05:31:12,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:31:12,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:31:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:31:12,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:31:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:12,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:31:12,490 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:31:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037457881] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:31:12,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:31:12,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-30 05:31:12,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730078038] [2023-08-30 05:31:12,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:31:12,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:31:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:31:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:31:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:31:12,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 224 [2023-08-30 05:31:12,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 2619 transitions, 61880 flow. Second operand has 16 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 05:31:12,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:31:12,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 224 [2023-08-30 05:31:12,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:32:02,591 INFO L130 PetriNetUnfolder]: 43785/68036 cut-off events. [2023-08-30 05:32:02,591 INFO L131 PetriNetUnfolder]: For 3586701/3586701 co-relation queries the response was YES. [2023-08-30 05:32:06,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761437 conditions, 68036 events. 43785/68036 cut-off events. For 3586701/3586701 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 550741 event pairs, 4315 based on Foata normal form. 964/69000 useless extension candidates. Maximal degree in co-relation 761233. Up to 26725 conditions per place. [2023-08-30 05:32:06,638 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 1634 selfloop transitions, 2598 changer transitions 17/4249 dead transitions. [2023-08-30 05:32:06,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 4249 transitions, 110021 flow [2023-08-30 05:32:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-30 05:32:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-30 05:32:06,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4251 transitions. [2023-08-30 05:32:06,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744419642857143 [2023-08-30 05:32:06,644 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4251 transitions. [2023-08-30 05:32:06,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4251 transitions. [2023-08-30 05:32:06,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:32:06,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4251 transitions. [2023-08-30 05:32:06,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 106.275) internal successors, (4251), 40 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states 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 05:32:06,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 224.0) internal successors, (9184), 41 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states 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 05:32:06,656 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 224.0) internal successors, (9184), 41 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states 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 05:32:06,656 INFO L175 Difference]: Start difference. First operand has 544 places, 2619 transitions, 61880 flow. Second operand 40 states and 4251 transitions. [2023-08-30 05:32:06,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 4249 transitions, 110021 flow [2023-08-30 05:33:13,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 4249 transitions, 98382 flow, removed 5000 selfloop flow, removed 7 redundant places. [2023-08-30 05:33:13,398 INFO L231 Difference]: Finished difference. Result has 597 places, 3480 transitions, 85119 flow [2023-08-30 05:33:13,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=54914, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1816, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=85119, PETRI_PLACES=597, PETRI_TRANSITIONS=3480} [2023-08-30 05:33:13,400 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 555 predicate places. [2023-08-30 05:33:13,401 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 3480 transitions, 85119 flow [2023-08-30 05:33:13,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 05:33:13,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:33:13,401 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:33:13,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 05:33:13,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:33:13,614 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:33:13,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:33:13,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1718755713, now seen corresponding path program 16 times [2023-08-30 05:33:13,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:33:13,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885556746] [2023-08-30 05:33:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:33:13,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:33:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:33:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:33:13,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:33:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885556746] [2023-08-30 05:33:13,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885556746] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:33:13,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431396456] [2023-08-30 05:33:13,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:33:13,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:33:13,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:33:13,744 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:33:13,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 05:33:13,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:33:13,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:33:13,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:33:13,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:33:13,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:13,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:33:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:33:13,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431396456] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:33:13,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:33:13,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-30 05:33:13,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939010971] [2023-08-30 05:33:13,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:33:13,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:33:13,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:33:13,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:33:13,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:33:14,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-30 05:33:14,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 3480 transitions, 85119 flow. Second operand has 15 states, 15 states have (on average 99.46666666666667) internal successors, (1492), 15 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states 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 05:33:14,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:33:14,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-30 05:33:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:34:35,574 INFO L130 PetriNetUnfolder]: 61064/95385 cut-off events. [2023-08-30 05:34:35,575 INFO L131 PetriNetUnfolder]: For 6053328/6053328 co-relation queries the response was YES. [2023-08-30 05:34:41,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127105 conditions, 95385 events. 61064/95385 cut-off events. For 6053328/6053328 co-relation queries the response was YES. Maximal size of possible extension queue 4814. Compared 815131 event pairs, 6669 based on Foata normal form. 1556/96941 useless extension candidates. Maximal degree in co-relation 1126881. Up to 36771 conditions per place. [2023-08-30 05:34:41,815 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 2719 selfloop transitions, 3390 changer transitions 5/6114 dead transitions. [2023-08-30 05:34:41,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 6114 transitions, 168507 flow [2023-08-30 05:34:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-30 05:34:41,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-30 05:34:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7582 transitions. [2023-08-30 05:34:41,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701140873015873 [2023-08-30 05:34:41,821 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7582 transitions. [2023-08-30 05:34:41,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7582 transitions. [2023-08-30 05:34:41,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:34:41,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7582 transitions. [2023-08-30 05:34:41,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 105.30555555555556) internal successors, (7582), 72 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states 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 05:34:41,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 224.0) internal successors, (16352), 73 states have internal predecessors, (16352), 0 states have call successors, (0), 0 states 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 05:34:41,842 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 224.0) internal successors, (16352), 73 states have internal predecessors, (16352), 0 states have call successors, (0), 0 states 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 05:34:41,842 INFO L175 Difference]: Start difference. First operand has 597 places, 3480 transitions, 85119 flow. Second operand 72 states and 7582 transitions. [2023-08-30 05:34:41,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 6114 transitions, 168507 flow [2023-08-30 05:37:24,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 6114 transitions, 161539 flow, removed 2658 selfloop flow, removed 17 redundant places. [2023-08-30 05:37:24,475 INFO L231 Difference]: Finished difference. Result has 687 places, 4952 transitions, 135723 flow [2023-08-30 05:37:24,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=80746, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=135723, PETRI_PLACES=687, PETRI_TRANSITIONS=4952} [2023-08-30 05:37:24,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 645 predicate places. [2023-08-30 05:37:24,479 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 4952 transitions, 135723 flow [2023-08-30 05:37:24,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.46666666666667) internal successors, (1492), 15 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states 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 05:37:24,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:37:24,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:37:24,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 05:37:24,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:37:24,686 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:37:24,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:37:24,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1355912132, now seen corresponding path program 17 times [2023-08-30 05:37:24,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:37:24,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65480342] [2023-08-30 05:37:24,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:37:24,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:37:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:37:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:37:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:37:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65480342] [2023-08-30 05:37:24,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65480342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:37:24,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8717474] [2023-08-30 05:37:24,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:37:24,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:37:24,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:37:24,824 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:37:24,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 05:37:24,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:37:24,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:37:24,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 05:37:24,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:37:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:37:25,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:37:25,109 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:37:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8717474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:37:25,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:37:25,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-08-30 05:37:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032849937] [2023-08-30 05:37:25,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:37:25,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:37:25,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:37:25,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:37:25,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:37:25,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-30 05:37:25,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 4952 transitions, 135723 flow. Second operand has 15 states, 15 states have (on average 98.33333333333333) internal successors, (1475), 15 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states 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 05:37:25,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:37:25,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-30 05:37:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:39:22,401 INFO L130 PetriNetUnfolder]: 60731/94829 cut-off events. [2023-08-30 05:39:22,401 INFO L131 PetriNetUnfolder]: For 7038378/7038378 co-relation queries the response was YES. [2023-08-30 05:39:29,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197627 conditions, 94829 events. 60731/94829 cut-off events. For 7038378/7038378 co-relation queries the response was YES. Maximal size of possible extension queue 4764. Compared 815430 event pairs, 2837 based on Foata normal form. 552/95381 useless extension candidates. Maximal degree in co-relation 1197377. Up to 36123 conditions per place. [2023-08-30 05:39:29,854 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 2968 selfloop transitions, 3027 changer transitions 18/6013 dead transitions. [2023-08-30 05:39:29,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 6013 transitions, 171359 flow [2023-08-30 05:39:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-30 05:39:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-30 05:39:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3020 transitions. [2023-08-30 05:39:29,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649014778325123 [2023-08-30 05:39:29,857 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3020 transitions. [2023-08-30 05:39:29,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3020 transitions. [2023-08-30 05:39:29,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:39:29,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3020 transitions. [2023-08-30 05:39:29,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 104.13793103448276) internal successors, (3020), 29 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states 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 05:39:29,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 224.0) internal successors, (6720), 30 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 05:39:29,866 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 224.0) internal successors, (6720), 30 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states 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 05:39:29,867 INFO L175 Difference]: Start difference. First operand has 687 places, 4952 transitions, 135723 flow. Second operand 29 states and 3020 transitions. [2023-08-30 05:39:29,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 6013 transitions, 171359 flow Killed by 15