./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 BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:03:40,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:03:40,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:03:40,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:03:40,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:03:40,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:03:40,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:03:40,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:03:40,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:03:40,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:03:40,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:03:40,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:03:40,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:03:40,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:03:40,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:03:40,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:03:40,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:03:40,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:03:40,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:03:40,416 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:03:40,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:03:40,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:03:40,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:03:40,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:03:40,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:03:40,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:03:40,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:03:40,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:03:40,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:03:40,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:03:40,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:03:40,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:03:40,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:03:40,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:03:40,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:03:40,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:03:40,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:03:40,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:03:40,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:03:40,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:03:40,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:03:40,445 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:03:40,470 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:03:40,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:03:40,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:03:40,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:03:40,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:03:40,472 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:03:40,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:03:40,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:03:40,473 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:03:40,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:03:40,474 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:03:40,474 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:03:40,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:03:40,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:03:40,475 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:03:40,476 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:03:40,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:03:40,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:03:40,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:03:40,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:03:40,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:03:40,477 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:03:40,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:03:40,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:03:40,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:03:40,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:03:40,734 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:03:40,735 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:03:40,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-09-01 02:03:41,817 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:03:42,009 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:03:42,009 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-09-01 02:03:42,042 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d095ba8a3/7cc56adf2a4242e6b57ab903a08c446a/FLAGb62c364d8 [2023-09-01 02:03:42,059 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d095ba8a3/7cc56adf2a4242e6b57ab903a08c446a [2023-09-01 02:03:42,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:03:42,062 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:03:42,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:03:42,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:03:42,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:03:42,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c25c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42, skipping insertion in model container [2023-09-01 02:03:42,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:03:42,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:03:42,223 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] [2023-09-01 02:03:42,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:03:42,240 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:03:42,264 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] [2023-09-01 02:03:42,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:03:42,290 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:03:42,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42 WrapperNode [2023-09-01 02:03:42,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:03:42,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:03:42,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:03:42,292 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:03:42,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,330 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-09-01 02:03:42,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:03:42,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:03:42,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:03:42,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:03:42,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:03:42,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:03:42,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:03:42,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:03:42,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (1/1) ... [2023-09-01 02:03:42,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:03:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:42,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 02:03:42,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 02:03:42,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:03:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:03:42,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:03:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:03:42,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:03:42,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:03:42,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:03:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:03:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:03:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:03:42,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:03:42,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:03:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:03:42,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:03:42,438 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:03:42,559 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:03:42,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:03:42,770 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:03:42,775 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:03:42,776 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 02:03:42,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:03:42 BoogieIcfgContainer [2023-09-01 02:03:42,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:03:42,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:03:42,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:03:42,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:03:42,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:03:42" (1/3) ... [2023-09-01 02:03:42,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8cd700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:03:42, skipping insertion in model container [2023-09-01 02:03:42,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:03:42" (2/3) ... [2023-09-01 02:03:42,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8cd700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:03:42, skipping insertion in model container [2023-09-01 02:03:42,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:03:42" (3/3) ... [2023-09-01 02:03:42,783 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-09-01 02:03:42,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:03:42,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 02:03:42,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:03:42,869 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 02:03:42,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 121 transitions, 266 flow [2023-09-01 02:03:42,959 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2023-09-01 02:03:42,959 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:42,963 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. [2023-09-01 02:03:42,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 121 transitions, 266 flow [2023-09-01 02:03:42,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 114 transitions, 246 flow [2023-09-01 02:03:42,970 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:03:42,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 114 transitions, 246 flow [2023-09-01 02:03:42,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 114 transitions, 246 flow [2023-09-01 02:03:42,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 114 transitions, 246 flow [2023-09-01 02:03:43,011 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2023-09-01 02:03:43,011 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:43,013 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. [2023-09-01 02:03:43,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-09-01 02:03:45,532 INFO L134 LiptonReduction]: Checked pairs total: 1724 [2023-09-01 02:03:45,532 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-09-01 02:03:45,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:03:45,553 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;@6a8b8dee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:03:45,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 02:03:45,555 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 02:03:45,556 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:03:45,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:45,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:03:45,557 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)] === [2023-09-01 02:03:45,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 441, now seen corresponding path program 1 times [2023-09-01 02:03:45,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:45,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548623608] [2023-09-01 02:03:45,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:45,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:45,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:45,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548623608] [2023-09-01 02:03:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548623608] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:45,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:03:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125325861] [2023-09-01 02:03:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:45,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:03:45,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:03:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:03:45,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-09-01 02:03:45,656 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) [2023-09-01 02:03:45,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:45,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-09-01 02:03:45,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:45,778 INFO L130 PetriNetUnfolder]: 578/785 cut-off events. [2023-09-01 02:03:45,779 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 02:03:45,782 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. [2023-09-01 02:03:45,787 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-09-01 02:03:45,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 140 flow [2023-09-01 02:03:45,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:03:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:03:45,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2023-09-01 02:03:45,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-09-01 02:03:45,799 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2023-09-01 02:03:45,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2023-09-01 02:03:45,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:45,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2023-09-01 02:03:45,806 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) [2023-09-01 02:03:45,810 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) [2023-09-01 02:03:45,810 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) [2023-09-01 02:03:45,811 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 2 states and 252 transitions. [2023-09-01 02:03:45,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 140 flow [2023-09-01 02:03:45,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 02:03:45,815 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2023-09-01 02:03:45,816 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} [2023-09-01 02:03:45,819 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-09-01 02:03:45,819 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2023-09-01 02:03:45,819 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) [2023-09-01 02:03:45,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:45,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:03:45,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:03:45,821 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)] === [2023-09-01 02:03:45,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash 432598, now seen corresponding path program 1 times [2023-09-01 02:03:45,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:45,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703071086] [2023-09-01 02:03:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:45,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:45,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:46,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703071086] [2023-09-01 02:03:46,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703071086] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:03:46,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322030526] [2023-09-01 02:03:46,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:46,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:03:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:03:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:03:46,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:46,070 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) [2023-09-01 02:03:46,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:46,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:46,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:46,156 INFO L130 PetriNetUnfolder]: 551/746 cut-off events. [2023-09-01 02:03:46,156 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:46,157 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. [2023-09-01 02:03:46,160 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-09-01 02:03:46,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 120 flow [2023-09-01 02:03:46,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:46,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:46,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-09-01 02:03:46,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-09-01 02:03:46,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-09-01 02:03:46,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-09-01 02:03:46,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:46,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-09-01 02:03:46,166 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) [2023-09-01 02:03:46,168 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) [2023-09-01 02:03:46,169 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) [2023-09-01 02:03:46,169 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 329 transitions. [2023-09-01 02:03:46,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 120 flow [2023-09-01 02:03:46,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:03:46,170 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2023-09-01 02:03:46,170 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} [2023-09-01 02:03:46,170 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-09-01 02:03:46,171 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2023-09-01 02:03:46,171 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) [2023-09-01 02:03:46,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:46,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:03:46,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:03:46,171 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)] === [2023-09-01 02:03:46,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:46,173 INFO L85 PathProgramCache]: Analyzing trace with hash 432599, now seen corresponding path program 1 times [2023-09-01 02:03:46,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:46,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388970978] [2023-09-01 02:03:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:46,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:46,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:46,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:46,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388970978] [2023-09-01 02:03:46,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388970978] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:46,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:46,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:03:46,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576572960] [2023-09-01 02:03:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:46,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:03:46,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:46,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:03:46,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:03:46,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-09-01 02:03:46,329 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) [2023-09-01 02:03:46,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:46,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-09-01 02:03:46,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:46,395 INFO L130 PetriNetUnfolder]: 524/707 cut-off events. [2023-09-01 02:03:46,396 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:46,396 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. [2023-09-01 02:03:46,399 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 02:03:46,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 114 flow [2023-09-01 02:03:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:46,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-09-01 02:03:46,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-09-01 02:03:46,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-09-01 02:03:46,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-09-01 02:03:46,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:46,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-09-01 02:03:46,401 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) [2023-09-01 02:03:46,402 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) [2023-09-01 02:03:46,403 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) [2023-09-01 02:03:46,403 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 342 transitions. [2023-09-01 02:03:46,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 114 flow [2023-09-01 02:03:46,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:46,404 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 65 flow [2023-09-01 02:03:46,404 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} [2023-09-01 02:03:46,405 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-09-01 02:03:46,405 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 65 flow [2023-09-01 02:03:46,405 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) [2023-09-01 02:03:46,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:46,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:03:46,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:03:46,406 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)] === [2023-09-01 02:03:46,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:46,406 INFO L85 PathProgramCache]: Analyzing trace with hash 415735409, now seen corresponding path program 1 times [2023-09-01 02:03:46,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:46,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825249060] [2023-09-01 02:03:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:46,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:46,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:46,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825249060] [2023-09-01 02:03:46,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825249060] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:46,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:46,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:03:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738761082] [2023-09-01 02:03:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:46,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:03:46,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:03:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:03:46,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:46,459 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) [2023-09-01 02:03:46,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:46,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:46,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:46,509 INFO L130 PetriNetUnfolder]: 498/669 cut-off events. [2023-09-01 02:03:46,509 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:46,510 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. [2023-09-01 02:03:46,512 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-09-01 02:03:46,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 107 flow [2023-09-01 02:03:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-09-01 02:03:46,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836309523809524 [2023-09-01 02:03:46,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-09-01 02:03:46,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-09-01 02:03:46,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:46,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-09-01 02:03:46,515 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) [2023-09-01 02:03:46,516 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) [2023-09-01 02:03:46,516 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) [2023-09-01 02:03:46,516 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 325 transitions. [2023-09-01 02:03:46,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 107 flow [2023-09-01 02:03:46,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:46,517 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 62 flow [2023-09-01 02:03:46,517 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} [2023-09-01 02:03:46,518 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2023-09-01 02:03:46,518 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 62 flow [2023-09-01 02:03:46,518 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) [2023-09-01 02:03:46,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:46,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:03:46,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:03:46,519 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)] === [2023-09-01 02:03:46,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:46,519 INFO L85 PathProgramCache]: Analyzing trace with hash 415735411, now seen corresponding path program 1 times [2023-09-01 02:03:46,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:46,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500412410] [2023-09-01 02:03:46,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:46,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:46,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500412410] [2023-09-01 02:03:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500412410] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:03:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890492607] [2023-09-01 02:03:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:46,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:03:46,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:03:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:03:46,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-09-01 02:03:46,590 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) [2023-09-01 02:03:46,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:46,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-09-01 02:03:46,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:46,638 INFO L130 PetriNetUnfolder]: 472/631 cut-off events. [2023-09-01 02:03:46,639 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:46,639 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. [2023-09-01 02:03:46,642 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 02:03:46,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 100 flow [2023-09-01 02:03:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:46,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-09-01 02:03:46,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2023-09-01 02:03:46,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-09-01 02:03:46,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-09-01 02:03:46,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:46,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-09-01 02:03:46,645 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) [2023-09-01 02:03:46,646 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) [2023-09-01 02:03:46,646 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) [2023-09-01 02:03:46,646 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 62 flow. Second operand 3 states and 338 transitions. [2023-09-01 02:03:46,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 100 flow [2023-09-01 02:03:46,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:46,647 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 59 flow [2023-09-01 02:03:46,647 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} [2023-09-01 02:03:46,648 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-09-01 02:03:46,648 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 59 flow [2023-09-01 02:03:46,648 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) [2023-09-01 02:03:46,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:46,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:03:46,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:03:46,649 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)] === [2023-09-01 02:03:46,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:46,649 INFO L85 PathProgramCache]: Analyzing trace with hash 89780272, now seen corresponding path program 1 times [2023-09-01 02:03:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:46,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684393458] [2023-09-01 02:03:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:46,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684393458] [2023-09-01 02:03:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684393458] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:46,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:46,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:03:46,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652025034] [2023-09-01 02:03:46,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:03:46,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:03:46,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:03:46,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 224 [2023-09-01 02:03:46,781 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) [2023-09-01 02:03:46,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:46,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 224 [2023-09-01 02:03:46,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:46,826 INFO L130 PetriNetUnfolder]: 370/502 cut-off events. [2023-09-01 02:03:46,826 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:46,827 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. [2023-09-01 02:03:46,828 INFO L137 encePairwiseOnDemand]: 222/224 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 02:03:46,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 97 flow [2023-09-01 02:03:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:46,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:46,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-09-01 02:03:46,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2023-09-01 02:03:46,830 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-09-01 02:03:46,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-09-01 02:03:46,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:46,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-09-01 02:03:46,831 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) [2023-09-01 02:03:46,832 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) [2023-09-01 02:03:46,832 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) [2023-09-01 02:03:46,832 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 59 flow. Second operand 3 states and 297 transitions. [2023-09-01 02:03:46,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 97 flow [2023-09-01 02:03:46,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:46,833 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 58 flow [2023-09-01 02:03:46,833 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} [2023-09-01 02:03:46,834 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-09-01 02:03:46,834 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 58 flow [2023-09-01 02:03:46,834 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) [2023-09-01 02:03:46,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:46,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:03:46,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:03:46,835 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)] === [2023-09-01 02:03:46,835 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:46,835 INFO L85 PathProgramCache]: Analyzing trace with hash 89780273, now seen corresponding path program 1 times [2023-09-01 02:03:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:46,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994370856] [2023-09-01 02:03:46,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:46,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:46,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:46,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994370856] [2023-09-01 02:03:46,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994370856] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:46,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:46,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:03:46,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321989536] [2023-09-01 02:03:46,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:46,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:03:46,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:46,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:03:46,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:03:46,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-09-01 02:03:46,920 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) [2023-09-01 02:03:46,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:46,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-09-01 02:03:46,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:46,953 INFO L130 PetriNetUnfolder]: 268/373 cut-off events. [2023-09-01 02:03:46,953 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:03:46,953 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. [2023-09-01 02:03:46,955 INFO L137 encePairwiseOnDemand]: 222/224 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 02:03:46,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 94 flow [2023-09-01 02:03:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:46,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-09-01 02:03:46,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49851190476190477 [2023-09-01 02:03:46,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-09-01 02:03:46,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-09-01 02:03:46,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:46,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-09-01 02:03:46,957 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) [2023-09-01 02:03:46,958 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) [2023-09-01 02:03:46,958 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) [2023-09-01 02:03:46,958 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 58 flow. Second operand 3 states and 335 transitions. [2023-09-01 02:03:46,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 94 flow [2023-09-01 02:03:46,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:46,959 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 57 flow [2023-09-01 02:03:46,959 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} [2023-09-01 02:03:46,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-09-01 02:03:46,960 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 57 flow [2023-09-01 02:03:46,960 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) [2023-09-01 02:03:46,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:46,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:03:46,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:03:46,961 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)] === [2023-09-01 02:03:46,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash 563403458, now seen corresponding path program 1 times [2023-09-01 02:03:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963677158] [2023-09-01 02:03:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:46,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:47,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:47,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963677158] [2023-09-01 02:03:47,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963677158] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:47,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:47,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:03:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759482574] [2023-09-01 02:03:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:03:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:03:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:03:47,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-09-01 02:03:47,138 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) [2023-09-01 02:03:47,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:47,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-09-01 02:03:47,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:47,184 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-09-01 02:03:47,184 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 02:03:47,184 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. [2023-09-01 02:03:47,193 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-09-01 02:03:47,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 164 flow [2023-09-01 02:03:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:03:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:03:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-09-01 02:03:47,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2023-09-01 02:03:47,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-09-01 02:03:47,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-09-01 02:03:47,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:47,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-09-01 02:03:47,196 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) [2023-09-01 02:03:47,196 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) [2023-09-01 02:03:47,197 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) [2023-09-01 02:03:47,197 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 57 flow. Second operand 3 states and 357 transitions. [2023-09-01 02:03:47,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 164 flow [2023-09-01 02:03:47,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:47,198 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2023-09-01 02:03:47,198 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} [2023-09-01 02:03:47,198 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-09-01 02:03:47,199 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2023-09-01 02:03:47,199 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) [2023-09-01 02:03:47,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:47,199 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] [2023-09-01 02:03:47,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:03:47,199 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)] === [2023-09-01 02:03:47,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash -493619620, now seen corresponding path program 1 times [2023-09-01 02:03:47,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:47,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7578126] [2023-09-01 02:03:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:47,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7578126] [2023-09-01 02:03:47,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7578126] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:47,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:47,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:03:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526904551] [2023-09-01 02:03:47,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:47,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:03:47,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:47,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:03:47,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:03:47,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:47,308 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) [2023-09-01 02:03:47,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:47,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:47,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:47,418 INFO L130 PetriNetUnfolder]: 495/775 cut-off events. [2023-09-01 02:03:47,418 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-09-01 02:03:47,419 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. [2023-09-01 02:03:47,428 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 54 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2023-09-01 02:03:47,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 304 flow [2023-09-01 02:03:47,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:03:47,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:03:47,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-09-01 02:03:47,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 02:03:47,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-09-01 02:03:47,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-09-01 02:03:47,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:47,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-09-01 02:03:47,432 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) [2023-09-01 02:03:47,434 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) [2023-09-01 02:03:47,434 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) [2023-09-01 02:03:47,434 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 5 states and 560 transitions. [2023-09-01 02:03:47,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 304 flow [2023-09-01 02:03:47,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:47,436 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 125 flow [2023-09-01 02:03:47,436 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} [2023-09-01 02:03:47,436 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-09-01 02:03:47,437 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 125 flow [2023-09-01 02:03:47,437 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) [2023-09-01 02:03:47,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:47,437 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] [2023-09-01 02:03:47,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:03:47,438 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)] === [2023-09-01 02:03:47,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:47,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1936959650, now seen corresponding path program 1 times [2023-09-01 02:03:47,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:47,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709278450] [2023-09-01 02:03:47,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:47,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:47,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709278450] [2023-09-01 02:03:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709278450] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:47,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:03:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352370658] [2023-09-01 02:03:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:47,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:03:47,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:47,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:03:47,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:03:47,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-09-01 02:03:47,511 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) [2023-09-01 02:03:47,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:47,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-09-01 02:03:47,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:47,604 INFO L130 PetriNetUnfolder]: 496/780 cut-off events. [2023-09-01 02:03:47,604 INFO L131 PetriNetUnfolder]: For 900/1011 co-relation queries the response was YES. [2023-09-01 02:03:47,605 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. [2023-09-01 02:03:47,608 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 39 selfloop transitions, 5 changer transitions 7/54 dead transitions. [2023-09-01 02:03:47,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 317 flow [2023-09-01 02:03:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:03:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:03:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2023-09-01 02:03:47,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-09-01 02:03:47,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2023-09-01 02:03:47,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2023-09-01 02:03:47,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:47,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2023-09-01 02:03:47,611 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) [2023-09-01 02:03:47,612 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) [2023-09-01 02:03:47,612 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) [2023-09-01 02:03:47,612 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 125 flow. Second operand 4 states and 456 transitions. [2023-09-01 02:03:47,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 317 flow [2023-09-01 02:03:47,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 307 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:47,615 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 151 flow [2023-09-01 02:03:47,615 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} [2023-09-01 02:03:47,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-09-01 02:03:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 151 flow [2023-09-01 02:03:47,616 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) [2023-09-01 02:03:47,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:47,616 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] [2023-09-01 02:03:47,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:03:47,616 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)] === [2023-09-01 02:03:47,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1363882676, now seen corresponding path program 2 times [2023-09-01 02:03:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818527038] [2023-09-01 02:03:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:47,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:47,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:47,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818527038] [2023-09-01 02:03:47,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818527038] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:47,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:03:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743366624] [2023-09-01 02:03:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:47,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:03:47,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:03:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:03:47,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:47,706 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) [2023-09-01 02:03:47,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:47,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:47,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:47,832 INFO L130 PetriNetUnfolder]: 599/997 cut-off events. [2023-09-01 02:03:47,832 INFO L131 PetriNetUnfolder]: For 2266/2358 co-relation queries the response was YES. [2023-09-01 02:03:47,834 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. [2023-09-01 02:03:47,837 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 59 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-09-01 02:03:47,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 437 flow [2023-09-01 02:03:47,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:03:47,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:03:47,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-09-01 02:03:47,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2023-09-01 02:03:47,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-09-01 02:03:47,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-09-01 02:03:47,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:47,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-09-01 02:03:47,840 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) [2023-09-01 02:03:47,841 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) [2023-09-01 02:03:47,842 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) [2023-09-01 02:03:47,842 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 151 flow. Second operand 5 states and 556 transitions. [2023-09-01 02:03:47,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 437 flow [2023-09-01 02:03:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 428 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:47,846 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 206 flow [2023-09-01 02:03:47,846 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} [2023-09-01 02:03:47,846 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-09-01 02:03:47,847 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 206 flow [2023-09-01 02:03:47,847 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) [2023-09-01 02:03:47,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:47,847 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] [2023-09-01 02:03:47,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:03:47,848 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)] === [2023-09-01 02:03:47,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:47,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1675666900, now seen corresponding path program 3 times [2023-09-01 02:03:47,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:47,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500089235] [2023-09-01 02:03:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:47,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:47,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:47,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500089235] [2023-09-01 02:03:47,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500089235] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:47,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:47,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:03:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131407441] [2023-09-01 02:03:47,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:47,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:03:47,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:03:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:03:47,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-09-01 02:03:47,916 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) [2023-09-01 02:03:47,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:47,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-09-01 02:03:47,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:48,037 INFO L130 PetriNetUnfolder]: 888/1431 cut-off events. [2023-09-01 02:03:48,038 INFO L131 PetriNetUnfolder]: For 5137/5529 co-relation queries the response was YES. [2023-09-01 02:03:48,040 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. [2023-09-01 02:03:48,045 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 50 selfloop transitions, 12 changer transitions 5/71 dead transitions. [2023-09-01 02:03:48,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 551 flow [2023-09-01 02:03:48,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:03:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:03:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-09-01 02:03:48,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100446428571429 [2023-09-01 02:03:48,066 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-09-01 02:03:48,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-09-01 02:03:48,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:48,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-09-01 02:03:48,067 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) [2023-09-01 02:03:48,068 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) [2023-09-01 02:03:48,068 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) [2023-09-01 02:03:48,068 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 206 flow. Second operand 4 states and 457 transitions. [2023-09-01 02:03:48,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 551 flow [2023-09-01 02:03:48,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 534 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:48,072 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 336 flow [2023-09-01 02:03:48,072 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} [2023-09-01 02:03:48,072 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-09-01 02:03:48,073 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 336 flow [2023-09-01 02:03:48,073 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) [2023-09-01 02:03:48,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:48,073 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] [2023-09-01 02:03:48,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:03:48,073 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)] === [2023-09-01 02:03:48,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash 189967031, now seen corresponding path program 1 times [2023-09-01 02:03:48,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:48,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539653431] [2023-09-01 02:03:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:48,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:48,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539653431] [2023-09-01 02:03:48,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539653431] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:48,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:48,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:03:48,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420548906] [2023-09-01 02:03:48,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:48,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:03:48,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:03:48,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:03:48,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-09-01 02:03:48,138 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) [2023-09-01 02:03:48,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:48,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-09-01 02:03:48,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:48,287 INFO L130 PetriNetUnfolder]: 902/1457 cut-off events. [2023-09-01 02:03:48,287 INFO L131 PetriNetUnfolder]: For 8142/8489 co-relation queries the response was YES. [2023-09-01 02:03:48,290 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. [2023-09-01 02:03:48,295 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 49 selfloop transitions, 8 changer transitions 10/71 dead transitions. [2023-09-01 02:03:48,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 671 flow [2023-09-01 02:03:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:03:48,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:03:48,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-09-01 02:03:48,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066964285714286 [2023-09-01 02:03:48,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-09-01 02:03:48,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-09-01 02:03:48,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:48,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-09-01 02:03:48,299 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) [2023-09-01 02:03:48,300 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) [2023-09-01 02:03:48,300 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) [2023-09-01 02:03:48,300 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 336 flow. Second operand 4 states and 454 transitions. [2023-09-01 02:03:48,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 671 flow [2023-09-01 02:03:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:48,306 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 385 flow [2023-09-01 02:03:48,306 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} [2023-09-01 02:03:48,306 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-09-01 02:03:48,306 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 385 flow [2023-09-01 02:03:48,307 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) [2023-09-01 02:03:48,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:48,307 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] [2023-09-01 02:03:48,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:03:48,307 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)] === [2023-09-01 02:03:48,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1022665134, now seen corresponding path program 4 times [2023-09-01 02:03:48,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:48,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690946201] [2023-09-01 02:03:48,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:48,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:48,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690946201] [2023-09-01 02:03:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690946201] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:03:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856911785] [2023-09-01 02:03:48,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:48,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:03:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:03:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:03:48,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-09-01 02:03:48,389 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) [2023-09-01 02:03:48,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:48,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-09-01 02:03:48,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:48,578 INFO L130 PetriNetUnfolder]: 1104/1792 cut-off events. [2023-09-01 02:03:48,578 INFO L131 PetriNetUnfolder]: For 10126/10391 co-relation queries the response was YES. [2023-09-01 02:03:48,581 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. [2023-09-01 02:03:48,587 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 69 selfloop transitions, 19 changer transitions 19/109 dead transitions. [2023-09-01 02:03:48,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 1087 flow [2023-09-01 02:03:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:03:48,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:03:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 663 transitions. [2023-09-01 02:03:48,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49330357142857145 [2023-09-01 02:03:48,589 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 663 transitions. [2023-09-01 02:03:48,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 663 transitions. [2023-09-01 02:03:48,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:48,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 663 transitions. [2023-09-01 02:03:48,590 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) [2023-09-01 02:03:48,592 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) [2023-09-01 02:03:48,592 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) [2023-09-01 02:03:48,592 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 385 flow. Second operand 6 states and 663 transitions. [2023-09-01 02:03:48,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 1087 flow [2023-09-01 02:03:48,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 1040 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-09-01 02:03:48,600 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 568 flow [2023-09-01 02:03:48,600 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} [2023-09-01 02:03:48,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-09-01 02:03:48,600 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 568 flow [2023-09-01 02:03:48,601 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) [2023-09-01 02:03:48,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:48,601 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] [2023-09-01 02:03:48,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 02:03:48,601 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)] === [2023-09-01 02:03:48,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:48,601 INFO L85 PathProgramCache]: Analyzing trace with hash -962485018, now seen corresponding path program 2 times [2023-09-01 02:03:48,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:48,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156048414] [2023-09-01 02:03:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:48,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:48,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:48,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156048414] [2023-09-01 02:03:48,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156048414] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:48,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:48,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:03:48,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844801114] [2023-09-01 02:03:48,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:48,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:03:48,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:03:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:03:48,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:48,698 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) [2023-09-01 02:03:48,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:48,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:48,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:48,886 INFO L130 PetriNetUnfolder]: 996/1596 cut-off events. [2023-09-01 02:03:48,886 INFO L131 PetriNetUnfolder]: For 9777/9946 co-relation queries the response was YES. [2023-09-01 02:03:48,889 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. [2023-09-01 02:03:48,895 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 52 selfloop transitions, 12 changer transitions 24/90 dead transitions. [2023-09-01 02:03:48,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 949 flow [2023-09-01 02:03:48,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:03:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:03:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-09-01 02:03:48,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2023-09-01 02:03:48,897 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-09-01 02:03:48,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-09-01 02:03:48,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:48,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-09-01 02:03:48,898 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) [2023-09-01 02:03:48,900 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) [2023-09-01 02:03:48,900 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) [2023-09-01 02:03:48,900 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 568 flow. Second operand 5 states and 556 transitions. [2023-09-01 02:03:48,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 949 flow [2023-09-01 02:03:48,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 909 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 02:03:48,908 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 585 flow [2023-09-01 02:03:48,908 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} [2023-09-01 02:03:48,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-09-01 02:03:48,908 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 585 flow [2023-09-01 02:03:48,909 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) [2023-09-01 02:03:48,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:48,909 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] [2023-09-01 02:03:48,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 02:03:48,909 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)] === [2023-09-01 02:03:48,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash -148083577, now seen corresponding path program 2 times [2023-09-01 02:03:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:48,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746821355] [2023-09-01 02:03:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:48,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:48,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746821355] [2023-09-01 02:03:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746821355] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:03:48,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:03:48,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:03:48,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253298405] [2023-09-01 02:03:48,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:48,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:03:48,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:48,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:03:48,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:03:48,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-09-01 02:03:48,974 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) [2023-09-01 02:03:48,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:48,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-09-01 02:03:48,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:49,101 INFO L130 PetriNetUnfolder]: 825/1235 cut-off events. [2023-09-01 02:03:49,102 INFO L131 PetriNetUnfolder]: For 12504/12806 co-relation queries the response was YES. [2023-09-01 02:03:49,105 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. [2023-09-01 02:03:49,110 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 51 selfloop transitions, 26 changer transitions 6/88 dead transitions. [2023-09-01 02:03:49,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 1108 flow [2023-09-01 02:03:49,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:03:49,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:03:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-09-01 02:03:49,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022321428571429 [2023-09-01 02:03:49,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-09-01 02:03:49,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-09-01 02:03:49,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:49,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-09-01 02:03:49,113 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) [2023-09-01 02:03:49,114 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) [2023-09-01 02:03:49,115 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) [2023-09-01 02:03:49,115 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 585 flow. Second operand 4 states and 450 transitions. [2023-09-01 02:03:49,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 1108 flow [2023-09-01 02:03:49,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 998 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-09-01 02:03:49,123 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 779 flow [2023-09-01 02:03:49,123 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} [2023-09-01 02:03:49,123 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-09-01 02:03:49,124 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 779 flow [2023-09-01 02:03:49,124 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) [2023-09-01 02:03:49,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:49,124 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] [2023-09-01 02:03:49,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 02:03:49,124 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)] === [2023-09-01 02:03:49,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:49,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2001982109, now seen corresponding path program 1 times [2023-09-01 02:03:49,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:49,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712396123] [2023-09-01 02:03:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:49,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:49,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:49,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:49,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:49,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712396123] [2023-09-01 02:03:49,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712396123] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:49,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806968171] [2023-09-01 02:03:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:49,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:49,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:49,225 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) [2023-09-01 02:03:49,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 02:03:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:49,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 02:03:49,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:49,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:49,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806968171] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:49,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-09-01 02:03:49,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-09-01 02:03:49,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433460708] [2023-09-01 02:03:49,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:03:49,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:03:49,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:49,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:03:49,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:03:49,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-09-01 02:03:49,409 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) [2023-09-01 02:03:49,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:49,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-09-01 02:03:49,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:49,638 INFO L130 PetriNetUnfolder]: 896/1303 cut-off events. [2023-09-01 02:03:49,638 INFO L131 PetriNetUnfolder]: For 11458/12041 co-relation queries the response was YES. [2023-09-01 02:03:49,642 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. [2023-09-01 02:03:49,650 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 70 selfloop transitions, 14 changer transitions 1/91 dead transitions. [2023-09-01 02:03:49,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 1174 flow [2023-09-01 02:03:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:03:49,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:03:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-09-01 02:03:49,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011160714285714 [2023-09-01 02:03:49,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-09-01 02:03:49,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-09-01 02:03:49,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:49,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-09-01 02:03:49,653 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) [2023-09-01 02:03:49,654 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) [2023-09-01 02:03:49,654 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) [2023-09-01 02:03:49,654 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 779 flow. Second operand 4 states and 449 transitions. [2023-09-01 02:03:49,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 1174 flow [2023-09-01 02:03:49,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 1141 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-09-01 02:03:49,662 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 844 flow [2023-09-01 02:03:49,662 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} [2023-09-01 02:03:49,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-09-01 02:03:49,663 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 844 flow [2023-09-01 02:03:49,663 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) [2023-09-01 02:03:49,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:49,663 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] [2023-09-01 02:03:49,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 02:03:49,872 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 [2023-09-01 02:03:49,873 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)] === [2023-09-01 02:03:49,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:49,874 INFO L85 PathProgramCache]: Analyzing trace with hash 187310563, now seen corresponding path program 2 times [2023-09-01 02:03:49,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:49,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49222472] [2023-09-01 02:03:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:49,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:49,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49222472] [2023-09-01 02:03:49,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49222472] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:49,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373609279] [2023-09-01 02:03:49,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:03:49,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:49,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:49,949 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) [2023-09-01 02:03:49,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 02:03:50,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:03:50,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:50,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 02:03:50,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:50,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:50,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:50,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:50,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373609279] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:50,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:50,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-09-01 02:03:50,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983770744] [2023-09-01 02:03:50,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:50,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:03:50,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:50,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:03:50,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:03:50,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-09-01 02:03:50,184 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) [2023-09-01 02:03:50,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:50,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-09-01 02:03:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:50,440 INFO L130 PetriNetUnfolder]: 1246/1813 cut-off events. [2023-09-01 02:03:50,440 INFO L131 PetriNetUnfolder]: For 16262/16395 co-relation queries the response was YES. [2023-09-01 02:03:50,445 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. [2023-09-01 02:03:50,452 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 102 selfloop transitions, 50 changer transitions 3/159 dead transitions. [2023-09-01 02:03:50,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 159 transitions, 2114 flow [2023-09-01 02:03:50,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:03:50,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:03:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 869 transitions. [2023-09-01 02:03:50,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849330357142857 [2023-09-01 02:03:50,454 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 869 transitions. [2023-09-01 02:03:50,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 869 transitions. [2023-09-01 02:03:50,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:50,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 869 transitions. [2023-09-01 02:03:50,456 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) [2023-09-01 02:03:50,458 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) [2023-09-01 02:03:50,458 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) [2023-09-01 02:03:50,458 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 844 flow. Second operand 8 states and 869 transitions. [2023-09-01 02:03:50,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 159 transitions, 2114 flow [2023-09-01 02:03:50,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 159 transitions, 2078 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 02:03:50,469 INFO L231 Difference]: Finished difference. Result has 73 places, 101 transitions, 1468 flow [2023-09-01 02:03:50,470 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} [2023-09-01 02:03:50,470 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-09-01 02:03:50,470 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 101 transitions, 1468 flow [2023-09-01 02:03:50,470 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) [2023-09-01 02:03:50,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:50,471 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] [2023-09-01 02:03:50,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 02:03:50,675 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 [2023-09-01 02:03:50,676 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)] === [2023-09-01 02:03:50,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash -800491465, now seen corresponding path program 3 times [2023-09-01 02:03:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469636397] [2023-09-01 02:03:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:50,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:50,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:50,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469636397] [2023-09-01 02:03:50,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469636397] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:50,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909138255] [2023-09-01 02:03:50,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:03:50,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:50,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:50,745 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) [2023-09-01 02:03:50,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 02:03:50,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 02:03:50,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:50,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 02:03:50,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:50,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:50,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:50,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909138255] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:50,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:50,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-09-01 02:03:50,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910107162] [2023-09-01 02:03:50,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:50,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:03:50,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:50,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:03:50,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:03:50,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-09-01 02:03:50,932 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) [2023-09-01 02:03:50,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:50,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-09-01 02:03:50,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:51,143 INFO L130 PetriNetUnfolder]: 1242/1776 cut-off events. [2023-09-01 02:03:51,143 INFO L131 PetriNetUnfolder]: For 20873/21017 co-relation queries the response was YES. [2023-09-01 02:03:51,148 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. [2023-09-01 02:03:51,155 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 80 selfloop transitions, 61 changer transitions 2/147 dead transitions. [2023-09-01 02:03:51,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 147 transitions, 2293 flow [2023-09-01 02:03:51,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 02:03:51,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 02:03:51,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-09-01 02:03:51,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2023-09-01 02:03:51,157 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-09-01 02:03:51,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-09-01 02:03:51,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:51,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-09-01 02:03:51,158 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) [2023-09-01 02:03:51,160 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) [2023-09-01 02:03:51,160 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) [2023-09-01 02:03:51,160 INFO L175 Difference]: Start difference. First operand has 73 places, 101 transitions, 1468 flow. Second operand 6 states and 651 transitions. [2023-09-01 02:03:51,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 147 transitions, 2293 flow [2023-09-01 02:03:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 147 transitions, 2269 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-09-01 02:03:51,175 INFO L231 Difference]: Finished difference. Result has 81 places, 119 transitions, 1973 flow [2023-09-01 02:03:51,175 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} [2023-09-01 02:03:51,176 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-09-01 02:03:51,176 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 119 transitions, 1973 flow [2023-09-01 02:03:51,176 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) [2023-09-01 02:03:51,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:51,176 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] [2023-09-01 02:03:51,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 02:03:51,385 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 [2023-09-01 02:03:51,385 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)] === [2023-09-01 02:03:51,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:51,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1587532899, now seen corresponding path program 1 times [2023-09-01 02:03:51,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:51,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915276759] [2023-09-01 02:03:51,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:51,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:51,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915276759] [2023-09-01 02:03:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915276759] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899953956] [2023-09-01 02:03:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:51,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:51,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:51,614 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) [2023-09-01 02:03:51,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 02:03:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:51,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:03:51,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:51,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:51,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899953956] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:51,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:51,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2023-09-01 02:03:51,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393100672] [2023-09-01 02:03:51,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:51,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:03:51,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:51,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:03:51,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:03:51,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:51,959 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) [2023-09-01 02:03:51,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:51,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:52,319 INFO L130 PetriNetUnfolder]: 1602/2283 cut-off events. [2023-09-01 02:03:52,320 INFO L131 PetriNetUnfolder]: For 29474/30145 co-relation queries the response was YES. [2023-09-01 02:03:52,326 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. [2023-09-01 02:03:52,338 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 136 selfloop transitions, 57 changer transitions 2/208 dead transitions. [2023-09-01 02:03:52,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 208 transitions, 3054 flow [2023-09-01 02:03:52,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:03:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:03:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 998 transitions. [2023-09-01 02:03:52,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503968253968256 [2023-09-01 02:03:52,341 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 998 transitions. [2023-09-01 02:03:52,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 998 transitions. [2023-09-01 02:03:52,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:52,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 998 transitions. [2023-09-01 02:03:52,343 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) [2023-09-01 02:03:52,346 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) [2023-09-01 02:03:52,346 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) [2023-09-01 02:03:52,346 INFO L175 Difference]: Start difference. First operand has 81 places, 119 transitions, 1973 flow. Second operand 9 states and 998 transitions. [2023-09-01 02:03:52,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 208 transitions, 3054 flow [2023-09-01 02:03:52,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 208 transitions, 2839 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-09-01 02:03:52,384 INFO L231 Difference]: Finished difference. Result has 90 places, 152 transitions, 2473 flow [2023-09-01 02:03:52,385 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} [2023-09-01 02:03:52,385 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-09-01 02:03:52,385 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 152 transitions, 2473 flow [2023-09-01 02:03:52,390 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) [2023-09-01 02:03:52,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:52,391 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] [2023-09-01 02:03:52,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 02:03:52,596 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 [2023-09-01 02:03:52,596 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)] === [2023-09-01 02:03:52,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:52,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1033459943, now seen corresponding path program 2 times [2023-09-01 02:03:52,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:52,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013152777] [2023-09-01 02:03:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:52,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:52,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:52,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013152777] [2023-09-01 02:03:52,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013152777] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:52,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318106224] [2023-09-01 02:03:52,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:03:52,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:52,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:52,793 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) [2023-09-01 02:03:52,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 02:03:52,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:03:52,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:52,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:03:52,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:52,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:53,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318106224] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:53,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:53,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-09-01 02:03:53,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36661921] [2023-09-01 02:03:53,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:53,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:03:53,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:53,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:03:53,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:03:53,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:53,111 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) [2023-09-01 02:03:53,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:53,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:53,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:53,600 INFO L130 PetriNetUnfolder]: 1988/2855 cut-off events. [2023-09-01 02:03:53,600 INFO L131 PetriNetUnfolder]: For 37419/38013 co-relation queries the response was YES. [2023-09-01 02:03:53,611 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. [2023-09-01 02:03:53,627 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 159 selfloop transitions, 59 changer transitions 2/233 dead transitions. [2023-09-01 02:03:53,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 233 transitions, 3455 flow [2023-09-01 02:03:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:03:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:03:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1002 transitions. [2023-09-01 02:03:53,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-09-01 02:03:53,630 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1002 transitions. [2023-09-01 02:03:53,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1002 transitions. [2023-09-01 02:03:53,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:53,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1002 transitions. [2023-09-01 02:03:53,632 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) [2023-09-01 02:03:53,633 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) [2023-09-01 02:03:53,634 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) [2023-09-01 02:03:53,634 INFO L175 Difference]: Start difference. First operand has 90 places, 152 transitions, 2473 flow. Second operand 9 states and 1002 transitions. [2023-09-01 02:03:53,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 233 transitions, 3455 flow [2023-09-01 02:03:53,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 233 transitions, 3201 flow, removed 115 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:53,669 INFO L231 Difference]: Finished difference. Result has 100 places, 173 transitions, 2729 flow [2023-09-01 02:03:53,669 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} [2023-09-01 02:03:53,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2023-09-01 02:03:53,670 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 173 transitions, 2729 flow [2023-09-01 02:03:53,670 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) [2023-09-01 02:03:53,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:53,671 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] [2023-09-01 02:03:53,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 02:03:53,885 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 [2023-09-01 02:03:53,885 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)] === [2023-09-01 02:03:53,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:53,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1838073433, now seen corresponding path program 3 times [2023-09-01 02:03:53,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:53,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335871590] [2023-09-01 02:03:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:53,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335871590] [2023-09-01 02:03:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335871590] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489090116] [2023-09-01 02:03:54,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:03:54,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:54,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:54,069 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) [2023-09-01 02:03:54,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 02:03:54,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 02:03:54,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:54,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:03:54,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:54,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:54,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489090116] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:54,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:54,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-09-01 02:03:54,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750303044] [2023-09-01 02:03:54,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:54,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 02:03:54,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:54,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 02:03:54,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-09-01 02:03:54,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:54,378 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) [2023-09-01 02:03:54,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:54,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:54,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:54,980 INFO L130 PetriNetUnfolder]: 2508/3609 cut-off events. [2023-09-01 02:03:54,981 INFO L131 PetriNetUnfolder]: For 47442/48154 co-relation queries the response was YES. [2023-09-01 02:03:54,992 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. [2023-09-01 02:03:55,006 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 190 selfloop transitions, 67 changer transitions 2/272 dead transitions. [2023-09-01 02:03:55,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 272 transitions, 4192 flow [2023-09-01 02:03:55,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:03:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:03:55,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 998 transitions. [2023-09-01 02:03:55,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503968253968256 [2023-09-01 02:03:55,009 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 998 transitions. [2023-09-01 02:03:55,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 998 transitions. [2023-09-01 02:03:55,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:55,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 998 transitions. [2023-09-01 02:03:55,011 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) [2023-09-01 02:03:55,013 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) [2023-09-01 02:03:55,013 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) [2023-09-01 02:03:55,014 INFO L175 Difference]: Start difference. First operand has 100 places, 173 transitions, 2729 flow. Second operand 9 states and 998 transitions. [2023-09-01 02:03:55,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 272 transitions, 4192 flow [2023-09-01 02:03:55,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 272 transitions, 3967 flow, removed 101 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:55,051 INFO L231 Difference]: Finished difference. Result has 111 places, 216 transitions, 3504 flow [2023-09-01 02:03:55,052 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} [2023-09-01 02:03:55,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-09-01 02:03:55,052 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 216 transitions, 3504 flow [2023-09-01 02:03:55,052 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) [2023-09-01 02:03:55,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:55,053 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] [2023-09-01 02:03:55,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 02:03:55,257 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 [2023-09-01 02:03:55,258 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)] === [2023-09-01 02:03:55,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:55,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1140109893, now seen corresponding path program 4 times [2023-09-01 02:03:55,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:55,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375447817] [2023-09-01 02:03:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:55,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:55,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:55,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375447817] [2023-09-01 02:03:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375447817] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:55,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334651037] [2023-09-01 02:03:55,420 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:03:55,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:55,421 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) [2023-09-01 02:03:55,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 02:03:55,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:03:55,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:55,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:03:55,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:55,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:55,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:55,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334651037] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:55,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:55,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-09-01 02:03:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103155212] [2023-09-01 02:03:55,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:03:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:55,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:03:55,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:03:55,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:55,704 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) [2023-09-01 02:03:55,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:55,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:55,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:56,232 INFO L130 PetriNetUnfolder]: 2816/4061 cut-off events. [2023-09-01 02:03:56,233 INFO L131 PetriNetUnfolder]: For 53826/54507 co-relation queries the response was YES. [2023-09-01 02:03:56,246 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. [2023-09-01 02:03:56,261 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 205 selfloop transitions, 65 changer transitions 2/285 dead transitions. [2023-09-01 02:03:56,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 285 transitions, 4610 flow [2023-09-01 02:03:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:03:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:03:56,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2023-09-01 02:03:56,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-09-01 02:03:56,264 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2023-09-01 02:03:56,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2023-09-01 02:03:56,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:56,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2023-09-01 02:03:56,265 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) [2023-09-01 02:03:56,267 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) [2023-09-01 02:03:56,267 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) [2023-09-01 02:03:56,267 INFO L175 Difference]: Start difference. First operand has 111 places, 216 transitions, 3504 flow. Second operand 9 states and 992 transitions. [2023-09-01 02:03:56,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 285 transitions, 4610 flow [2023-09-01 02:03:56,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 285 transitions, 4272 flow, removed 157 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:56,314 INFO L231 Difference]: Finished difference. Result has 121 places, 235 transitions, 3710 flow [2023-09-01 02:03:56,314 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} [2023-09-01 02:03:56,314 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2023-09-01 02:03:56,314 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 235 transitions, 3710 flow [2023-09-01 02:03:56,315 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) [2023-09-01 02:03:56,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:56,315 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] [2023-09-01 02:03:56,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 02:03:56,519 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 [2023-09-01 02:03:56,519 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)] === [2023-09-01 02:03:56,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash 964793071, now seen corresponding path program 5 times [2023-09-01 02:03:56,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:56,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329918260] [2023-09-01 02:03:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:56,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:56,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329918260] [2023-09-01 02:03:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329918260] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:56,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334918024] [2023-09-01 02:03:56,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:03:56,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:56,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:56,698 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) [2023-09-01 02:03:56,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 02:03:56,803 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 02:03:56,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:56,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:03:56,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:56,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:56,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:03:56,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334918024] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:56,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:56,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-09-01 02:03:56,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581822756] [2023-09-01 02:03:56,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:56,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:03:57,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:03:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:03:57,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:57,028 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) [2023-09-01 02:03:57,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:57,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:57,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:57,733 INFO L130 PetriNetUnfolder]: 3210/4633 cut-off events. [2023-09-01 02:03:57,733 INFO L131 PetriNetUnfolder]: For 58507/59236 co-relation queries the response was YES. [2023-09-01 02:03:57,750 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. [2023-09-01 02:03:57,782 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 244 selfloop transitions, 60 changer transitions 2/319 dead transitions. [2023-09-01 02:03:57,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 319 transitions, 5206 flow [2023-09-01 02:03:57,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:03:57,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:03:57,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 990 transitions. [2023-09-01 02:03:57,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-09-01 02:03:57,784 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 990 transitions. [2023-09-01 02:03:57,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 990 transitions. [2023-09-01 02:03:57,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:57,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 990 transitions. [2023-09-01 02:03:57,786 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) [2023-09-01 02:03:57,788 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) [2023-09-01 02:03:57,788 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) [2023-09-01 02:03:57,788 INFO L175 Difference]: Start difference. First operand has 121 places, 235 transitions, 3710 flow. Second operand 9 states and 990 transitions. [2023-09-01 02:03:57,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 319 transitions, 5206 flow [2023-09-01 02:03:57,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 319 transitions, 4904 flow, removed 124 selfloop flow, removed 2 redundant places. [2023-09-01 02:03:57,849 INFO L231 Difference]: Finished difference. Result has 131 places, 271 transitions, 4313 flow [2023-09-01 02:03:57,849 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} [2023-09-01 02:03:57,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2023-09-01 02:03:57,849 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 271 transitions, 4313 flow [2023-09-01 02:03:57,850 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) [2023-09-01 02:03:57,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:57,850 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] [2023-09-01 02:03:57,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 02:03:58,055 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 [2023-09-01 02:03:58,056 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)] === [2023-09-01 02:03:58,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1174161011, now seen corresponding path program 6 times [2023-09-01 02:03:58,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:58,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599063831] [2023-09-01 02:03:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:58,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:58,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:58,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599063831] [2023-09-01 02:03:58,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599063831] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:58,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549977801] [2023-09-01 02:03:58,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:03:58,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:58,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:58,219 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) [2023-09-01 02:03:58,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 02:03:58,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 02:03:58,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:03:58,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:03:58,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:58,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549977801] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:58,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:58,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-09-01 02:03:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204360741] [2023-09-01 02:03:58,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:58,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:03:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:58,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:03:58,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:03:58,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:58,521 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) [2023-09-01 02:03:58,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:58,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:58,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:03:59,251 INFO L130 PetriNetUnfolder]: 3544/5123 cut-off events. [2023-09-01 02:03:59,251 INFO L131 PetriNetUnfolder]: For 67225/67962 co-relation queries the response was YES. [2023-09-01 02:03:59,269 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. [2023-09-01 02:03:59,285 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 265 selfloop transitions, 60 changer transitions 2/340 dead transitions. [2023-09-01 02:03:59,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 340 transitions, 5599 flow [2023-09-01 02:03:59,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:03:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:03:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2023-09-01 02:03:59,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-09-01 02:03:59,288 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2023-09-01 02:03:59,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2023-09-01 02:03:59,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:03:59,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2023-09-01 02:03:59,292 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) [2023-09-01 02:03:59,294 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) [2023-09-01 02:03:59,294 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) [2023-09-01 02:03:59,294 INFO L175 Difference]: Start difference. First operand has 131 places, 271 transitions, 4313 flow. Second operand 9 states and 992 transitions. [2023-09-01 02:03:59,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 340 transitions, 5599 flow [2023-09-01 02:03:59,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 340 transitions, 5201 flow, removed 187 selfloop flow, removed 1 redundant places. [2023-09-01 02:03:59,364 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 4509 flow [2023-09-01 02:03:59,365 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} [2023-09-01 02:03:59,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2023-09-01 02:03:59,365 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 4509 flow [2023-09-01 02:03:59,415 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) [2023-09-01 02:03:59,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:03:59,416 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] [2023-09-01 02:03:59,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-09-01 02:03:59,616 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 [2023-09-01 02:03:59,616 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)] === [2023-09-01 02:03:59,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:03:59,617 INFO L85 PathProgramCache]: Analyzing trace with hash -14383625, now seen corresponding path program 7 times [2023-09-01 02:03:59,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:03:59,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890238705] [2023-09-01 02:03:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:03:59,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:03:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:59,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:03:59,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890238705] [2023-09-01 02:03:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890238705] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:03:59,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663192388] [2023-09-01 02:03:59,710 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:03:59,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:03:59,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:03:59,725 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) [2023-09-01 02:03:59,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 02:03:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:03:59,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:03:59,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:03:59,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:59,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:03:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:03:59,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663192388] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:03:59,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:03:59,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-09-01 02:03:59,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237861249] [2023-09-01 02:03:59,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:03:59,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:03:59,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:03:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:03:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:03:59,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:03:59,957 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) [2023-09-01 02:03:59,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:03:59,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:03:59,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:04:01,463 INFO L130 PetriNetUnfolder]: 6669/9752 cut-off events. [2023-09-01 02:04:01,464 INFO L131 PetriNetUnfolder]: For 117175/117636 co-relation queries the response was YES. [2023-09-01 02:04:01,501 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. [2023-09-01 02:04:01,532 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 409 selfloop transitions, 121 changer transitions 0/534 dead transitions. [2023-09-01 02:04:01,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 534 transitions, 8665 flow [2023-09-01 02:04:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:04:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:04:01,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1120 transitions. [2023-09-01 02:04:01,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 02:04:01,534 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1120 transitions. [2023-09-01 02:04:01,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1120 transitions. [2023-09-01 02:04:01,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:04:01,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1120 transitions. [2023-09-01 02:04:01,536 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) [2023-09-01 02:04:01,538 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) [2023-09-01 02:04:01,538 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) [2023-09-01 02:04:01,538 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 4509 flow. Second operand 10 states and 1120 transitions. [2023-09-01 02:04:01,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 534 transitions, 8665 flow [2023-09-01 02:04:01,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 534 transitions, 8055 flow, removed 280 selfloop flow, removed 2 redundant places. [2023-09-01 02:04:01,692 INFO L231 Difference]: Finished difference. Result has 155 places, 342 transitions, 5373 flow [2023-09-01 02:04:01,692 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} [2023-09-01 02:04:01,693 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2023-09-01 02:04:01,693 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 342 transitions, 5373 flow [2023-09-01 02:04:01,693 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) [2023-09-01 02:04:01,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:04:01,693 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] [2023-09-01 02:04:01,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-09-01 02:04:01,898 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 [2023-09-01 02:04:01,898 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)] === [2023-09-01 02:04:01,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:04:01,898 INFO L85 PathProgramCache]: Analyzing trace with hash -618251952, now seen corresponding path program 8 times [2023-09-01 02:04:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:04:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067651348] [2023-09-01 02:04:01,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:04:01,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:04:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:02,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:04:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067651348] [2023-09-01 02:04:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067651348] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:04:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092242714] [2023-09-01 02:04:02,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:04:02,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:04:02,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:04:02,101 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) [2023-09-01 02:04:02,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 02:04:02,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:04:02,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:04:02,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:04:02,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:04:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:02,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:04:02,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:02,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092242714] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:04:02,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:04:02,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-09-01 02:04:02,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380516647] [2023-09-01 02:04:02,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:04:02,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:04:02,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:04:02,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:04:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:04:02,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:04:02,404 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) [2023-09-01 02:04:02,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:04:02,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:04:02,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:04:04,347 INFO L130 PetriNetUnfolder]: 7276/10859 cut-off events. [2023-09-01 02:04:04,347 INFO L131 PetriNetUnfolder]: For 163345/163868 co-relation queries the response was YES. [2023-09-01 02:04:04,391 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. [2023-09-01 02:04:04,425 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 593 selfloop transitions, 175 changer transitions 0/772 dead transitions. [2023-09-01 02:04:04,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 772 transitions, 12200 flow [2023-09-01 02:04:04,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:04:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:04:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1324 transitions. [2023-09-01 02:04:04,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49255952380952384 [2023-09-01 02:04:04,459 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1324 transitions. [2023-09-01 02:04:04,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1324 transitions. [2023-09-01 02:04:04,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:04:04,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1324 transitions. [2023-09-01 02:04:04,464 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) [2023-09-01 02:04:04,466 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) [2023-09-01 02:04:04,467 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) [2023-09-01 02:04:04,467 INFO L175 Difference]: Start difference. First operand has 155 places, 342 transitions, 5373 flow. Second operand 12 states and 1324 transitions. [2023-09-01 02:04:04,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 772 transitions, 12200 flow [2023-09-01 02:04:04,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 772 transitions, 12033 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-09-01 02:04:04,762 INFO L231 Difference]: Finished difference. Result has 170 places, 437 transitions, 7365 flow [2023-09-01 02:04:04,762 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} [2023-09-01 02:04:04,763 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2023-09-01 02:04:04,763 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 437 transitions, 7365 flow [2023-09-01 02:04:04,763 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) [2023-09-01 02:04:04,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:04:04,763 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] [2023-09-01 02:04:04,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 02:04:04,968 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 [2023-09-01 02:04:04,969 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)] === [2023-09-01 02:04:04,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:04:04,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1157066672, now seen corresponding path program 9 times [2023-09-01 02:04:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:04:04,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976265896] [2023-09-01 02:04:04,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:04:04,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:04:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:05,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:04:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976265896] [2023-09-01 02:04:05,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976265896] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:04:05,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662452436] [2023-09-01 02:04:05,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:04:05,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:04:05,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:04:05,077 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) [2023-09-01 02:04:05,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 02:04:05,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:04:05,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:04:05,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:04:05,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:04:05,187 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:05,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:04:05,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:05,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662452436] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:04:05,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:04:05,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-09-01 02:04:05,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978502661] [2023-09-01 02:04:05,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:04:05,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 02:04:05,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:04:05,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 02:04:05,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 02:04:05,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 224 [2023-09-01 02:04:05,324 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) [2023-09-01 02:04:05,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:04:05,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 224 [2023-09-01 02:04:05,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:04:08,581 INFO L130 PetriNetUnfolder]: 10860/16217 cut-off events. [2023-09-01 02:04:08,581 INFO L131 PetriNetUnfolder]: For 277191/277191 co-relation queries the response was YES. [2023-09-01 02:04:08,687 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. [2023-09-01 02:04:08,753 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 520 selfloop transitions, 350 changer transitions 0/870 dead transitions. [2023-09-01 02:04:08,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 870 transitions, 16215 flow [2023-09-01 02:04:08,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 02:04:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 02:04:08,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2054 transitions. [2023-09-01 02:04:08,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826127819548872 [2023-09-01 02:04:08,770 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2054 transitions. [2023-09-01 02:04:08,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2054 transitions. [2023-09-01 02:04:08,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:04:08,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2054 transitions. [2023-09-01 02:04:08,786 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) [2023-09-01 02:04:08,789 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) [2023-09-01 02:04:08,790 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) [2023-09-01 02:04:08,790 INFO L175 Difference]: Start difference. First operand has 170 places, 437 transitions, 7365 flow. Second operand 19 states and 2054 transitions. [2023-09-01 02:04:08,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 870 transitions, 16215 flow [2023-09-01 02:04:09,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 870 transitions, 15393 flow, removed 309 selfloop flow, removed 1 redundant places. [2023-09-01 02:04:09,986 INFO L231 Difference]: Finished difference. Result has 199 places, 599 transitions, 11602 flow [2023-09-01 02:04:09,987 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} [2023-09-01 02:04:09,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-09-01 02:04:09,988 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 599 transitions, 11602 flow [2023-09-01 02:04:09,989 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) [2023-09-01 02:04:09,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:04:09,989 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] [2023-09-01 02:04:09,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-09-01 02:04:10,193 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 [2023-09-01 02:04:10,193 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)] === [2023-09-01 02:04:10,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:04:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -489516291, now seen corresponding path program 10 times [2023-09-01 02:04:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:04:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800714470] [2023-09-01 02:04:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:04:10,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:04:10,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:04:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800714470] [2023-09-01 02:04:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800714470] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:04:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802757470] [2023-09-01 02:04:10,302 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:04:10,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:04:10,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:04:10,318 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) [2023-09-01 02:04:10,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 02:04:10,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:04:10,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:04:10,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:04:10,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:04:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:10,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:04:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802757470] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:04:10,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:04:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 02:04:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779642289] [2023-09-01 02:04:10,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:04:10,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 02:04:10,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:04:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 02:04:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-09-01 02:04:10,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-09-01 02:04:10,623 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) [2023-09-01 02:04:10,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:04:10,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-09-01 02:04:10,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:04:16,153 INFO L130 PetriNetUnfolder]: 13212/19753 cut-off events. [2023-09-01 02:04:16,153 INFO L131 PetriNetUnfolder]: For 484622/484622 co-relation queries the response was YES. [2023-09-01 02:04:16,279 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. [2023-09-01 02:04:16,359 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 853 selfloop transitions, 761 changer transitions 56/1670 dead transitions. [2023-09-01 02:04:16,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1670 transitions, 36603 flow [2023-09-01 02:04:16,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-09-01 02:04:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-09-01 02:04:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 5294 transitions. [2023-09-01 02:04:16,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634103641456583 [2023-09-01 02:04:16,363 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 5294 transitions. [2023-09-01 02:04:16,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 5294 transitions. [2023-09-01 02:04:16,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:04:16,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 5294 transitions. [2023-09-01 02:04:16,370 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) [2023-09-01 02:04:16,377 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) [2023-09-01 02:04:16,378 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) [2023-09-01 02:04:16,378 INFO L175 Difference]: Start difference. First operand has 199 places, 599 transitions, 11602 flow. Second operand 51 states and 5294 transitions. [2023-09-01 02:04:16,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1670 transitions, 36603 flow [2023-09-01 02:04:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1670 transitions, 34650 flow, removed 785 selfloop flow, removed 1 redundant places. [2023-09-01 02:04:18,912 INFO L231 Difference]: Finished difference. Result has 279 places, 1054 transitions, 23044 flow [2023-09-01 02:04:18,913 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} [2023-09-01 02:04:18,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2023-09-01 02:04:18,913 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 1054 transitions, 23044 flow [2023-09-01 02:04:18,914 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) [2023-09-01 02:04:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:04:18,914 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] [2023-09-01 02:04:18,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-09-01 02:04:19,119 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 [2023-09-01 02:04:19,119 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)] === [2023-09-01 02:04:19,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:04:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1282512432, now seen corresponding path program 11 times [2023-09-01 02:04:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:04:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062775098] [2023-09-01 02:04:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:04:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:04:19,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:04:19,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:04:19,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062775098] [2023-09-01 02:04:19,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062775098] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:04:19,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099925802] [2023-09-01 02:04:19,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:04:19,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:04:19,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:04:19,319 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) [2023-09-01 02:04:19,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 02:04:19,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:04:19,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:04:19,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:04:19,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:04:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:19,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:04:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099925802] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:04:19,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:04:19,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 02:04:19,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448376766] [2023-09-01 02:04:19,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:04:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 02:04:19,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:04:19,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 02:04:19,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-09-01 02:04:19,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-09-01 02:04:19,666 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) [2023-09-01 02:04:19,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:04:19,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-09-01 02:04:19,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:04:29,089 INFO L130 PetriNetUnfolder]: 14807/22563 cut-off events. [2023-09-01 02:04:29,089 INFO L131 PetriNetUnfolder]: For 717652/717652 co-relation queries the response was YES. [2023-09-01 02:04:29,475 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. [2023-09-01 02:04:29,606 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 1181 selfloop transitions, 1129 changer transitions 71/2381 dead transitions. [2023-09-01 02:04:29,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2381 transitions, 50258 flow [2023-09-01 02:04:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-09-01 02:04:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-09-01 02:04:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 11157 transitions. [2023-09-01 02:04:29,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654956608811749 [2023-09-01 02:04:29,621 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 11157 transitions. [2023-09-01 02:04:29,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 11157 transitions. [2023-09-01 02:04:29,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:04:29,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 11157 transitions. [2023-09-01 02:04:29,638 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) [2023-09-01 02:04:29,656 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) [2023-09-01 02:04:29,658 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) [2023-09-01 02:04:29,658 INFO L175 Difference]: Start difference. First operand has 279 places, 1054 transitions, 23044 flow. Second operand 107 states and 11157 transitions. [2023-09-01 02:04:29,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2381 transitions, 50258 flow [2023-09-01 02:04:36,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 2381 transitions, 44039 flow, removed 2459 selfloop flow, removed 8 redundant places. [2023-09-01 02:04:36,773 INFO L231 Difference]: Finished difference. Result has 430 places, 1445 transitions, 32059 flow [2023-09-01 02:04:36,774 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} [2023-09-01 02:04:36,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2023-09-01 02:04:36,774 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1445 transitions, 32059 flow [2023-09-01 02:04:36,775 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) [2023-09-01 02:04:36,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:04:36,775 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] [2023-09-01 02:04:36,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-09-01 02:04:36,979 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 [2023-09-01 02:04:36,980 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)] === [2023-09-01 02:04:36,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:04:36,980 INFO L85 PathProgramCache]: Analyzing trace with hash -595300895, now seen corresponding path program 12 times [2023-09-01 02:04:36,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:04:36,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665090594] [2023-09-01 02:04:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:04:36,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:04:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:04:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665090594] [2023-09-01 02:04:37,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665090594] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:04:37,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823724247] [2023-09-01 02:04:37,092 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:04:37,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:04:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:04:37,093 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) [2023-09-01 02:04:37,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 02:04:37,175 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 02:04:37,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:04:37,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:04:37,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:04:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:37,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:04:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:37,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823724247] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:04:37,274 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:04:37,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-09-01 02:04:37,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587386351] [2023-09-01 02:04:37,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:04:37,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 02:04:37,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:04:37,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 02:04:37,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-09-01 02:04:37,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-09-01 02:04:37,346 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) [2023-09-01 02:04:37,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:04:37,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-09-01 02:04:37,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:04:46,922 INFO L130 PetriNetUnfolder]: 15386/23331 cut-off events. [2023-09-01 02:04:46,922 INFO L131 PetriNetUnfolder]: For 922974/923153 co-relation queries the response was YES. [2023-09-01 02:04:47,218 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. [2023-09-01 02:04:47,378 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 1112 selfloop transitions, 777 changer transitions 0/1921 dead transitions. [2023-09-01 02:04:47,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1921 transitions, 47674 flow [2023-09-01 02:04:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:04:47,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:04:47,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1120 transitions. [2023-09-01 02:04:47,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-09-01 02:04:47,380 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1120 transitions. [2023-09-01 02:04:47,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1120 transitions. [2023-09-01 02:04:47,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:04:47,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1120 transitions. [2023-09-01 02:04:47,381 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) [2023-09-01 02:04:47,383 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) [2023-09-01 02:04:47,383 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) [2023-09-01 02:04:47,383 INFO L175 Difference]: Start difference. First operand has 430 places, 1445 transitions, 32059 flow. Second operand 10 states and 1120 transitions. [2023-09-01 02:04:47,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1921 transitions, 47674 flow [2023-09-01 02:04:55,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1921 transitions, 39159 flow, removed 3216 selfloop flow, removed 15 redundant places. [2023-09-01 02:04:55,651 INFO L231 Difference]: Finished difference. Result has 426 places, 1554 transitions, 30441 flow [2023-09-01 02:04:55,653 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} [2023-09-01 02:04:55,653 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2023-09-01 02:04:55,653 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1554 transitions, 30441 flow [2023-09-01 02:04:55,654 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) [2023-09-01 02:04:55,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:04:55,654 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] [2023-09-01 02:04:55,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-09-01 02:04:55,858 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 [2023-09-01 02:04:55,858 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)] === [2023-09-01 02:04:55,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:04:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2031438389, now seen corresponding path program 13 times [2023-09-01 02:04:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:04:55,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198255234] [2023-09-01 02:04:55,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:04:55,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:04:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:04:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198255234] [2023-09-01 02:04:55,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198255234] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:04:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424580207] [2023-09-01 02:04:55,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:04:55,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:04:55,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:04:55,961 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) [2023-09-01 02:04:55,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 02:04:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:04:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:04:56,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:04:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:56,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:04:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:04:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424580207] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:04:56,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:04:56,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-09-01 02:04:56,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610977084] [2023-09-01 02:04:56,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:04:56,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 02:04:56,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:04:56,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 02:04:56,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-09-01 02:04:56,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-09-01 02:04:56,213 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) [2023-09-01 02:04:56,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:04:56,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-09-01 02:04:56,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:12,942 INFO L130 PetriNetUnfolder]: 26105/40145 cut-off events. [2023-09-01 02:05:12,942 INFO L131 PetriNetUnfolder]: For 1408892/1409230 co-relation queries the response was YES. [2023-09-01 02:05:14,507 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. [2023-09-01 02:05:14,763 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 2344 selfloop transitions, 1196 changer transitions 27/3610 dead transitions. [2023-09-01 02:05:14,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 3610 transitions, 78265 flow [2023-09-01 02:05:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-09-01 02:05:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-09-01 02:05:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3069 transitions. [2023-09-01 02:05:14,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893176020408163 [2023-09-01 02:05:14,768 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3069 transitions. [2023-09-01 02:05:14,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3069 transitions. [2023-09-01 02:05:14,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:14,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3069 transitions. [2023-09-01 02:05:14,771 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) [2023-09-01 02:05:14,774 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) [2023-09-01 02:05:14,774 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) [2023-09-01 02:05:14,774 INFO L175 Difference]: Start difference. First operand has 426 places, 1554 transitions, 30441 flow. Second operand 28 states and 3069 transitions. [2023-09-01 02:05:14,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 3610 transitions, 78265 flow [2023-09-01 02:05:27,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 3610 transitions, 77188 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-09-01 02:05:27,499 INFO L231 Difference]: Finished difference. Result has 461 places, 2036 transitions, 42675 flow [2023-09-01 02:05:27,500 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} [2023-09-01 02:05:27,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2023-09-01 02:05:27,501 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 2036 transitions, 42675 flow [2023-09-01 02:05:27,502 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) [2023-09-01 02:05:27,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:05:27,502 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] [2023-09-01 02:05:27,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 02:05:27,706 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 [2023-09-01 02:05:27,707 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)] === [2023-09-01 02:05:27,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:05:27,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1947520715, now seen corresponding path program 14 times [2023-09-01 02:05:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:05:27,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683090471] [2023-09-01 02:05:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:05:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:05:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:05:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:05:27,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:05:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683090471] [2023-09-01 02:05:27,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683090471] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:05:27,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291991804] [2023-09-01 02:05:27,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:05:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:05:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:05:27,794 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) [2023-09-01 02:05:27,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 02:05:27,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:05:27,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:05:27,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:05:27,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:05:27,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:05:27,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:05:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:05:27,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291991804] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:05:27,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:05:27,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-09-01 02:05:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345295859] [2023-09-01 02:05:27,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:05:27,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 02:05:27,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:05:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 02:05:27,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-09-01 02:05:28,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-09-01 02:05:28,087 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) [2023-09-01 02:05:28,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:05:28,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-09-01 02:05:28,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:05:52,955 INFO L130 PetriNetUnfolder]: 30083/45975 cut-off events. [2023-09-01 02:05:52,955 INFO L131 PetriNetUnfolder]: For 2011425/2011425 co-relation queries the response was YES. [2023-09-01 02:05:54,929 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. [2023-09-01 02:05:55,192 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 1759 selfloop transitions, 1813 changer transitions 8/3580 dead transitions. [2023-09-01 02:05:55,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 3580 transitions, 82737 flow [2023-09-01 02:05:55,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-09-01 02:05:55,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-09-01 02:05:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6330 transitions. [2023-09-01 02:05:55,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47098214285714285 [2023-09-01 02:05:55,198 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6330 transitions. [2023-09-01 02:05:55,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6330 transitions. [2023-09-01 02:05:55,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:05:55,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6330 transitions. [2023-09-01 02:05:55,205 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) [2023-09-01 02:05:55,211 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) [2023-09-01 02:05:55,212 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) [2023-09-01 02:05:55,213 INFO L175 Difference]: Start difference. First operand has 461 places, 2036 transitions, 42675 flow. Second operand 60 states and 6330 transitions. [2023-09-01 02:05:55,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 3580 transitions, 82737 flow [2023-09-01 02:06:23,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 3580 transitions, 79067 flow, removed 1185 selfloop flow, removed 5 redundant places. [2023-09-01 02:06:23,150 INFO L231 Difference]: Finished difference. Result has 544 places, 2619 transitions, 61880 flow [2023-09-01 02:06:23,152 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} [2023-09-01 02:06:23,153 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2023-09-01 02:06:23,153 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 2619 transitions, 61880 flow [2023-09-01 02:06:23,153 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) [2023-09-01 02:06:23,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:06:23,153 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] [2023-09-01 02:06:23,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 02:06:23,372 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 [2023-09-01 02:06:23,373 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)] === [2023-09-01 02:06:23,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:06:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1987505746, now seen corresponding path program 15 times [2023-09-01 02:06:23,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:06:23,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825164356] [2023-09-01 02:06:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:06:23,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:06:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:06:23,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:06:23,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:06:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825164356] [2023-09-01 02:06:23,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825164356] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:06:23,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721400280] [2023-09-01 02:06:23,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:06:23,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:06:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:06:23,513 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) [2023-09-01 02:06:23,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 02:06:23,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:06:23,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:06:23,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:06:23,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:06:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:06:23,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:06:23,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:06:23,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721400280] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:06:23,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:06:23,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-09-01 02:06:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508254431] [2023-09-01 02:06:23,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:06:23,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 02:06:23,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:06:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 02:06:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-09-01 02:06:23,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 224 [2023-09-01 02:06:23,845 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) [2023-09-01 02:06:23,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:06:23,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 224 [2023-09-01 02:06:23,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:07:09,652 INFO L130 PetriNetUnfolder]: 43785/68036 cut-off events. [2023-09-01 02:07:09,652 INFO L131 PetriNetUnfolder]: For 3586701/3586701 co-relation queries the response was YES. [2023-09-01 02:07:13,014 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. [2023-09-01 02:07:13,406 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 1634 selfloop transitions, 2598 changer transitions 17/4249 dead transitions. [2023-09-01 02:07:13,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 4249 transitions, 110021 flow [2023-09-01 02:07:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-09-01 02:07:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-09-01 02:07:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4251 transitions. [2023-09-01 02:07:13,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744419642857143 [2023-09-01 02:07:13,410 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4251 transitions. [2023-09-01 02:07:13,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4251 transitions. [2023-09-01 02:07:13,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:07:13,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4251 transitions. [2023-09-01 02:07:13,414 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) [2023-09-01 02:07:13,418 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) [2023-09-01 02:07:13,418 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) [2023-09-01 02:07:13,418 INFO L175 Difference]: Start difference. First operand has 544 places, 2619 transitions, 61880 flow. Second operand 40 states and 4251 transitions. [2023-09-01 02:07:13,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 4249 transitions, 110021 flow [2023-09-01 02:08:19,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 4249 transitions, 98382 flow, removed 5000 selfloop flow, removed 7 redundant places. [2023-09-01 02:08:19,119 INFO L231 Difference]: Finished difference. Result has 597 places, 3480 transitions, 85119 flow [2023-09-01 02:08:19,121 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} [2023-09-01 02:08:19,121 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 555 predicate places. [2023-09-01 02:08:19,121 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 3480 transitions, 85119 flow [2023-09-01 02:08:19,121 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) [2023-09-01 02:08:19,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:08:19,122 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] [2023-09-01 02:08:19,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-09-01 02:08:19,326 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 [2023-09-01 02:08:19,326 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)] === [2023-09-01 02:08:19,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:08:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1718755713, now seen corresponding path program 16 times [2023-09-01 02:08:19,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:08:19,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104392695] [2023-09-01 02:08:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:08:19,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:08:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:08:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:08:19,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:08:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104392695] [2023-09-01 02:08:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104392695] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:08:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715356595] [2023-09-01 02:08:19,422 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:08:19,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:08:19,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:08:19,423 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) [2023-09-01 02:08:19,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 02:08:19,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:08:19,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:08:19,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 02:08:19,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:08:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:08:19,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:08:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:08:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715356595] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:08:19,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:08:19,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-09-01 02:08:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275580155] [2023-09-01 02:08:19,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:08:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 02:08:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:08:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 02:08:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-09-01 02:08:19,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-09-01 02:08:19,748 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) [2023-09-01 02:08:19,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:08:19,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-09-01 02:08:19,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:09:39,188 INFO L130 PetriNetUnfolder]: 61064/95385 cut-off events. [2023-09-01 02:09:39,188 INFO L131 PetriNetUnfolder]: For 6053328/6053328 co-relation queries the response was YES. [2023-09-01 02:09:44,535 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. [2023-09-01 02:09:45,125 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 2719 selfloop transitions, 3390 changer transitions 5/6114 dead transitions. [2023-09-01 02:09:45,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 6114 transitions, 168507 flow [2023-09-01 02:09:45,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-09-01 02:09:45,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-09-01 02:09:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7582 transitions. [2023-09-01 02:09:45,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701140873015873 [2023-09-01 02:09:45,131 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7582 transitions. [2023-09-01 02:09:45,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7582 transitions. [2023-09-01 02:09:45,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:09:45,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7582 transitions. [2023-09-01 02:09:45,137 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) [2023-09-01 02:09:45,144 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) [2023-09-01 02:09:45,145 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) [2023-09-01 02:09:45,145 INFO L175 Difference]: Start difference. First operand has 597 places, 3480 transitions, 85119 flow. Second operand 72 states and 7582 transitions. [2023-09-01 02:09:45,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 6114 transitions, 168507 flow [2023-09-01 02:12:24,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 6114 transitions, 161539 flow, removed 2658 selfloop flow, removed 17 redundant places. [2023-09-01 02:12:24,634 INFO L231 Difference]: Finished difference. Result has 687 places, 4952 transitions, 135723 flow [2023-09-01 02:12:24,636 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} [2023-09-01 02:12:24,637 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 645 predicate places. [2023-09-01 02:12:24,637 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 4952 transitions, 135723 flow [2023-09-01 02:12:24,637 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) [2023-09-01 02:12:24,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:12:24,638 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] [2023-09-01 02:12:24,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-09-01 02:12:24,845 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 [2023-09-01 02:12:24,845 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)] === [2023-09-01 02:12:24,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:12:24,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1355912132, now seen corresponding path program 17 times [2023-09-01 02:12:24,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:12:24,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623300975] [2023-09-01 02:12:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:12:24,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:12:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:12:24,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:12:24,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:12:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623300975] [2023-09-01 02:12:24,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623300975] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:12:24,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293519948] [2023-09-01 02:12:24,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:12:24,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:12:24,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:12:24,965 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) [2023-09-01 02:12:24,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 02:12:25,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:12:25,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:12:25,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 02:12:25,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:12:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:12:25,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:12:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:12:25,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293519948] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:12:25,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:12:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-09-01 02:12:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142610513] [2023-09-01 02:12:25,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:12:25,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 02:12:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:12:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 02:12:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-09-01 02:12:25,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-09-01 02:12:25,352 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) [2023-09-01 02:12:25,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:12:25,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-09-01 02:12:25,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:14:33,729 INFO L130 PetriNetUnfolder]: 60731/94829 cut-off events. [2023-09-01 02:14:33,729 INFO L131 PetriNetUnfolder]: For 7038378/7038378 co-relation queries the response was YES. [2023-09-01 02:14:40,509 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. [2023-09-01 02:14:41,387 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 2968 selfloop transitions, 3027 changer transitions 18/6013 dead transitions. [2023-09-01 02:14:41,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 6013 transitions, 171359 flow [2023-09-01 02:14:41,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-09-01 02:14:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-09-01 02:14:41,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3020 transitions. [2023-09-01 02:14:41,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649014778325123 [2023-09-01 02:14:41,390 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3020 transitions. [2023-09-01 02:14:41,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3020 transitions. [2023-09-01 02:14:41,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:14:41,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3020 transitions. [2023-09-01 02:14:41,393 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) [2023-09-01 02:14:41,396 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) [2023-09-01 02:14:41,397 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) [2023-09-01 02:14:41,397 INFO L175 Difference]: Start difference. First operand has 687 places, 4952 transitions, 135723 flow. Second operand 29 states and 3020 transitions. [2023-09-01 02:14:41,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 6013 transitions, 171359 flow Killed by 15