./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/chl-file-item-trans.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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:44:21,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:44:21,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:44:21,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:44:21,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:44:21,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:44:21,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:44:21,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:44:21,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:44:21,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:44:21,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:44:21,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:44:21,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:44:21,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:44:21,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:44:21,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:44:21,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:44:21,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:44:21,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:44:21,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:44:21,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:44:21,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:44:21,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:44:21,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:44:21,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:44:21,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:44:21,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:44:21,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:44:21,457 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:44:21,458 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:44:21,458 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:44:21,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:44:21,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:44:21,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:44:21,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:44:21,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:44:21,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:44:21,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:44:21,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:44:21,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:44:21,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:44:21,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:44:21,517 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:44:21,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:44:21,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:44:21,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:44:21,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:44:21,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:44:21,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:44:21,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:44:21,521 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:44:21,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:44:21,522 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:44:21,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:44:21,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:44:21,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:44:21,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:44:21,523 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:44:21,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:44:21,523 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:44:21,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:44:21,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:44:21,524 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:44:21,524 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:44:21,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:44:21,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:44:21,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:44:21,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:44:21,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:44:21,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:44:21,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:44:21,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:44:21,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:44:21,526 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:44:21,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:44:21,527 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:44:21,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:44:21,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:44:21,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:44:21,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:44:21,892 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:44:21,892 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:44:21,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c [2023-08-29 22:44:23,086 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:44:23,317 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:44:23,318 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c [2023-08-29 22:44:23,324 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81caeb958/be5b8c04c4864b8982c70318851604ba/FLAG797103763 [2023-08-29 22:44:23,333 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81caeb958/be5b8c04c4864b8982c70318851604ba [2023-08-29 22:44:23,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:44:23,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:44:23,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:44:23,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:44:23,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:44:23,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47aab82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23, skipping insertion in model container [2023-08-29 22:44:23,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:44:23,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:44:23,503 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/chl-file-item-trans.wvr.c[2817,2830] [2023-08-29 22:44:23,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:44:23,529 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:44:23,553 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/chl-file-item-trans.wvr.c[2817,2830] [2023-08-29 22:44:23,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:44:23,577 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:44:23,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23 WrapperNode [2023-08-29 22:44:23,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:44:23,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:44:23,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:44:23,580 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:44:23,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,634 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 202 [2023-08-29 22:44:23,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:44:23,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:44:23,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:44:23,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:44:23,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:44:23,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:44:23,688 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:44:23,688 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:44:23,689 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (1/1) ... [2023-08-29 22:44:23,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:44:23,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:44:23,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 22:44:23,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 22:44:23,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:44:23,771 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 22:44:23,771 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 22:44:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 22:44:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 22:44:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 22:44:23,772 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 22:44:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:44:23,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:44:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:44:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:44:23,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:44:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:44:23,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:44:23,775 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:44:23,937 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:44:23,938 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:44:24,295 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:44:24,303 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:44:24,304 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:44:24,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:44:24 BoogieIcfgContainer [2023-08-29 22:44:24,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:44:24,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:44:24,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:44:24,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:44:24,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:44:23" (1/3) ... [2023-08-29 22:44:24,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3893608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:44:24, skipping insertion in model container [2023-08-29 22:44:24,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:44:23" (2/3) ... [2023-08-29 22:44:24,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3893608b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:44:24, skipping insertion in model container [2023-08-29 22:44:24,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:44:24" (3/3) ... [2023-08-29 22:44:24,313 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2023-08-29 22:44:24,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:44:24,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 22:44:24,345 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:44:24,539 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 22:44:24,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 250 transitions, 524 flow [2023-08-29 22:44:24,665 INFO L130 PetriNetUnfolder]: 19/247 cut-off events. [2023-08-29 22:44:24,665 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:44:24,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 19/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-29 22:44:24,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 250 transitions, 524 flow [2023-08-29 22:44:24,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 243 transitions, 504 flow [2023-08-29 22:44:24,681 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:44:24,689 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 243 transitions, 504 flow [2023-08-29 22:44:24,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 243 transitions, 504 flow [2023-08-29 22:44:24,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 243 transitions, 504 flow [2023-08-29 22:44:24,748 INFO L130 PetriNetUnfolder]: 19/243 cut-off events. [2023-08-29 22:44:24,748 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:44:24,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 243 events. 19/243 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-08-29 22:44:24,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 16368 [2023-08-29 22:44:33,207 INFO L134 LiptonReduction]: Checked pairs total: 15678 [2023-08-29 22:44:33,208 INFO L136 LiptonReduction]: Total number of compositions: 304 [2023-08-29 22:44:33,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:44:33,238 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;@51adf8b8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:44:33,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 22:44:33,240 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 22:44:33,240 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:33,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:33,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:44:33,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:33,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:33,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1048, now seen corresponding path program 1 times [2023-08-29 22:44:33,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:33,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743933122] [2023-08-29 22:44:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:33,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:33,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743933122] [2023-08-29 22:44:33,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743933122] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:33,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:33,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:44:33,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074177363] [2023-08-29 22:44:33,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:33,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:44:33,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:33,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:44:33,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:44:33,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 554 [2023-08-29 22:44:33,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 236.5) internal successors, (473), 2 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:33,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:33,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 554 [2023-08-29 22:44:33,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:33,534 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-29 22:44:33,534 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-29 22:44:33,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 469 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-08-29 22:44:33,540 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-29 22:44:33,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-29 22:44:33,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:44:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:44:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2023-08-29 22:44:33,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45216606498194944 [2023-08-29 22:44:33,564 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2023-08-29 22:44:33,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2023-08-29 22:44:33,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:33,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2023-08-29 22:44:33,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:33,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:33,583 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:33,584 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 501 transitions. [2023-08-29 22:44:33,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-29 22:44:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 22:44:33,591 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-29 22:44:33,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-29 22:44:33,597 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 22:44:33,598 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-29 22:44:33,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 236.5) internal successors, (473), 2 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:33,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:33,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:44:33,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:44:33,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:33,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1028155, now seen corresponding path program 1 times [2023-08-29 22:44:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:33,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730822256] [2023-08-29 22:44:33,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:33,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:33,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730822256] [2023-08-29 22:44:33,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730822256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:33,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:33,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718428777] [2023-08-29 22:44:33,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:33,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:33,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:33,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:33,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:33,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 554 [2023-08-29 22:44:33,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:33,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:33,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 554 [2023-08-29 22:44:33,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:34,011 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-29 22:44:34,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:34,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 425 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-08-29 22:44:34,013 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 22:44:34,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-29 22:44:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2023-08-29 22:44:34,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326113116726835 [2023-08-29 22:44:34,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2023-08-29 22:44:34,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2023-08-29 22:44:34,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:34,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2023-08-29 22:44:34,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,023 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 719 transitions. [2023-08-29 22:44:34,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-29 22:44:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:44:34,024 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-29 22:44:34,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=54, 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=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-29 22:44:34,025 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-29 22:44:34,025 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-29 22:44:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:34,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:44:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:44:34,027 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:34,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:34,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1028154, now seen corresponding path program 1 times [2023-08-29 22:44:34,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590052689] [2023-08-29 22:44:34,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:34,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590052689] [2023-08-29 22:44:34,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590052689] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:34,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:34,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992709543] [2023-08-29 22:44:34,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:34,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:34,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 554 [2023-08-29 22:44:34,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:34,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 554 [2023-08-29 22:44:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:34,235 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-29 22:44:34,235 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:34,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 387 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-08-29 22:44:34,236 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 22:44:34,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-29 22:44:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-08-29 22:44:34,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223826714801444 [2023-08-29 22:44:34,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-08-29 22:44:34,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-08-29 22:44:34,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:34,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-08-29 22:44:34,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,246 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 702 transitions. [2023-08-29 22:44:34,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-29 22:44:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:34,247 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-29 22:44:34,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-29 22:44:34,248 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-29 22:44:34,248 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-29 22:44:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:34,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:44:34,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:44:34,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:34,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash 988077891, now seen corresponding path program 1 times [2023-08-29 22:44:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75461959] [2023-08-29 22:44:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:34,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:34,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75461959] [2023-08-29 22:44:34,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75461959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:34,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:34,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:34,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857282686] [2023-08-29 22:44:34,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:34,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:34,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:34,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:34,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:34,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 554 [2023-08-29 22:44:34,350 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,350 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:34,350 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 554 [2023-08-29 22:44:34,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:34,412 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-29 22:44:34,413 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:34,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 343 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-08-29 22:44:34,418 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-29 22:44:34,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-29 22:44:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:34,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-08-29 22:44:34,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43020457280385077 [2023-08-29 22:44:34,421 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-08-29 22:44:34,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-08-29 22:44:34,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:34,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-08-29 22:44:34,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,429 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 715 transitions. [2023-08-29 22:44:34,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-29 22:44:34,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:34,431 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-29 22:44:34,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-29 22:44:34,432 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-29 22:44:34,433 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-29 22:44:34,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:34,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:44:34,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 22:44:34,435 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:34,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:34,436 INFO L85 PathProgramCache]: Analyzing trace with hash 988077890, now seen corresponding path program 1 times [2023-08-29 22:44:34,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:34,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785926268] [2023-08-29 22:44:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:34,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:34,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:34,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785926268] [2023-08-29 22:44:34,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785926268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:34,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:34,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:44:34,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175375236] [2023-08-29 22:44:34,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:34,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:44:34,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:34,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:44:34,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:44:34,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 554 [2023-08-29 22:44:34,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:34,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 554 [2023-08-29 22:44:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:34,615 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-29 22:44:34,616 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:34,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 299 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-08-29 22:44:34,617 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-29 22:44:34,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-29 22:44:34,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-08-29 22:44:34,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41997593261131166 [2023-08-29 22:44:34,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-08-29 22:44:34,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-08-29 22:44:34,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:34,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-08-29 22:44:34,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,626 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,626 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 698 transitions. [2023-08-29 22:44:34,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-29 22:44:34,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:34,627 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-29 22:44:34,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-29 22:44:34,628 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:44:34,628 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-29 22:44:34,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:34,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:34,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:44:34,629 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:34,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 355101856, now seen corresponding path program 1 times [2023-08-29 22:44:34,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:34,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376888313] [2023-08-29 22:44:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:34,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:34,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:34,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:34,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376888313] [2023-08-29 22:44:34,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376888313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:34,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:34,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:44:34,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923720879] [2023-08-29 22:44:34,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:34,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:44:34,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:34,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:44:34,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:44:34,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 554 [2023-08-29 22:44:34,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:34,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 554 [2023-08-29 22:44:34,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:34,884 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-29 22:44:34,885 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:34,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-08-29 22:44:34,886 INFO L137 encePairwiseOnDemand]: 552/554 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-29 22:44:34,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-29 22:44:34,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:34,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-29 22:44:34,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418772563176893 [2023-08-29 22:44:34,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-29 22:44:34,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-29 22:44:34,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:34,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-29 22:44:34,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,896 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 705 transitions. [2023-08-29 22:44:34,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-29 22:44:34,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:34,898 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-29 22:44:34,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-29 22:44:34,902 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:44:34,902 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-29 22:44:34,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:34,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:34,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:34,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 22:44:34,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:34,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash 355101855, now seen corresponding path program 1 times [2023-08-29 22:44:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:34,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847231411] [2023-08-29 22:44:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:34,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:35,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:35,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847231411] [2023-08-29 22:44:35,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847231411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:35,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:35,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:44:35,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551931324] [2023-08-29 22:44:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:35,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:35,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:35,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:35,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:35,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 554 [2023-08-29 22:44:35,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:35,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:35,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 554 [2023-08-29 22:44:35,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:35,142 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-29 22:44:35,142 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:44:35,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-08-29 22:44:35,143 INFO L137 encePairwiseOnDemand]: 552/554 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-29 22:44:35,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-29 22:44:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:44:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:44:35,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2023-08-29 22:44:35,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037304452466907 [2023-08-29 22:44:35,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2023-08-29 22:44:35,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2023-08-29 22:44:35,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:35,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2023-08-29 22:44:35,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:35,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:35,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:35,151 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 671 transitions. [2023-08-29 22:44:35,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-29 22:44:35,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:35,153 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-29 22:44:35,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-29 22:44:35,153 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-29 22:44:35,154 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-29 22:44:35,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:35,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:35,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 22:44:35,155 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:35,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1360094838, now seen corresponding path program 1 times [2023-08-29 22:44:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351506253] [2023-08-29 22:44:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:35,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:36,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:36,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351506253] [2023-08-29 22:44:36,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351506253] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:36,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:36,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:36,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778365637] [2023-08-29 22:44:36,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:36,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:36,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:36,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:36,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:36,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 554 [2023-08-29 22:44:36,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:36,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:36,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 554 [2023-08-29 22:44:36,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:36,913 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-08-29 22:44:36,913 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 22:44:36,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 1 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-08-29 22:44:36,914 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 30 selfloop transitions, 5 changer transitions 9/44 dead transitions. [2023-08-29 22:44:36,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 199 flow [2023-08-29 22:44:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:36,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1305 transitions. [2023-08-29 22:44:36,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925992779783393 [2023-08-29 22:44:36,917 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1305 transitions. [2023-08-29 22:44:36,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1305 transitions. [2023-08-29 22:44:36,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:36,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1305 transitions. [2023-08-29 22:44:36,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:36,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:36,926 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:36,926 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1305 transitions. [2023-08-29 22:44:36,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 199 flow [2023-08-29 22:44:36,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:36,928 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 63 flow [2023-08-29 22:44:36,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-08-29 22:44:36,928 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-29 22:44:36,929 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 63 flow [2023-08-29 22:44:36,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:36,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:36,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:36,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 22:44:36,930 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:36,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1698100650, now seen corresponding path program 2 times [2023-08-29 22:44:36,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:36,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263269763] [2023-08-29 22:44:36,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:36,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:37,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:37,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263269763] [2023-08-29 22:44:37,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263269763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:37,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:37,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:37,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084947547] [2023-08-29 22:44:37,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:37,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:37,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:37,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:37,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:38,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 554 [2023-08-29 22:44:38,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:38,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:38,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 554 [2023-08-29 22:44:38,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:38,395 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-08-29 22:44:38,396 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-29 22:44:38,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 114 events. 36/114 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 402 event pairs, 2 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 294. Up to 45 conditions per place. [2023-08-29 22:44:38,397 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 32 selfloop transitions, 6 changer transitions 9/47 dead transitions. [2023-08-29 22:44:38,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 241 flow [2023-08-29 22:44:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:38,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2023-08-29 22:44:38,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39651022864019253 [2023-08-29 22:44:38,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2023-08-29 22:44:38,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2023-08-29 22:44:38,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:38,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2023-08-29 22:44:38,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:38,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:38,410 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:38,410 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 63 flow. Second operand 6 states and 1318 transitions. [2023-08-29 22:44:38,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 241 flow [2023-08-29 22:44:38,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 22:44:38,412 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 101 flow [2023-08-29 22:44:38,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2023-08-29 22:44:38,413 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-29 22:44:38,413 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 101 flow [2023-08-29 22:44:38,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:38,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:38,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:38,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 22:44:38,414 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:38,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:38,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1410945388, now seen corresponding path program 3 times [2023-08-29 22:44:38,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:38,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407464760] [2023-08-29 22:44:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:38,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:39,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:39,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:39,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407464760] [2023-08-29 22:44:39,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407464760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:39,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:39,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:39,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517648036] [2023-08-29 22:44:39,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:39,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:39,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:39,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:39,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:39,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 554 [2023-08-29 22:44:39,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 21 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:39,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:39,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 554 [2023-08-29 22:44:39,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:39,945 INFO L130 PetriNetUnfolder]: 32/98 cut-off events. [2023-08-29 22:44:39,946 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-29 22:44:39,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 98 events. 32/98 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 2 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 312. Up to 46 conditions per place. [2023-08-29 22:44:39,946 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-29 22:44:39,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 256 flow [2023-08-29 22:44:39,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1268 transitions. [2023-08-29 22:44:39,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.381468110709988 [2023-08-29 22:44:39,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1268 transitions. [2023-08-29 22:44:39,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1268 transitions. [2023-08-29 22:44:39,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:39,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1268 transitions. [2023-08-29 22:44:39,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.33333333333334) internal successors, (1268), 6 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:39,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:39,960 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:39,961 INFO L175 Difference]: Start difference. First operand has 41 places, 21 transitions, 101 flow. Second operand 6 states and 1268 transitions. [2023-08-29 22:44:39,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 256 flow [2023-08-29 22:44:39,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 245 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 22:44:39,963 INFO L231 Difference]: Finished difference. Result has 45 places, 20 transitions, 108 flow [2023-08-29 22:44:39,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=20} [2023-08-29 22:44:39,964 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-29 22:44:39,964 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 20 transitions, 108 flow [2023-08-29 22:44:39,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:39,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:39,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:39,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 22:44:39,965 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:39,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:39,966 INFO L85 PathProgramCache]: Analyzing trace with hash -180611160, now seen corresponding path program 4 times [2023-08-29 22:44:39,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:39,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484402715] [2023-08-29 22:44:39,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:39,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:40,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:40,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:40,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484402715] [2023-08-29 22:44:40,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484402715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:40,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:40,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229317638] [2023-08-29 22:44:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:40,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:41,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 554 [2023-08-29 22:44:41,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 20 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:41,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:41,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 554 [2023-08-29 22:44:41,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:41,400 INFO L130 PetriNetUnfolder]: 16/54 cut-off events. [2023-08-29 22:44:41,400 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-29 22:44:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 54 events. 16/54 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 1 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 199. Up to 20 conditions per place. [2023-08-29 22:44:41,401 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 18 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2023-08-29 22:44:41,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 201 flow [2023-08-29 22:44:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:41,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1273 transitions. [2023-08-29 22:44:41,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38297232250300844 [2023-08-29 22:44:41,406 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1273 transitions. [2023-08-29 22:44:41,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1273 transitions. [2023-08-29 22:44:41,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:41,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1273 transitions. [2023-08-29 22:44:41,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.16666666666666) internal successors, (1273), 6 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:41,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:41,415 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:41,416 INFO L175 Difference]: Start difference. First operand has 45 places, 20 transitions, 108 flow. Second operand 6 states and 1273 transitions. [2023-08-29 22:44:41,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 201 flow [2023-08-29 22:44:41,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 180 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-29 22:44:41,420 INFO L231 Difference]: Finished difference. Result has 43 places, 18 transitions, 82 flow [2023-08-29 22:44:41,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=18} [2023-08-29 22:44:41,420 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-08-29 22:44:41,421 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 18 transitions, 82 flow [2023-08-29 22:44:41,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:41,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:41,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 22:44:41,434 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:41,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash -144084204, now seen corresponding path program 5 times [2023-08-29 22:44:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041822042] [2023-08-29 22:44:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:41,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:42,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:42,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:42,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041822042] [2023-08-29 22:44:42,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041822042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:42,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:42,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:42,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138113979] [2023-08-29 22:44:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:42,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:42,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:42,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:42,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 554 [2023-08-29 22:44:42,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:42,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:42,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 554 [2023-08-29 22:44:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:42,794 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-08-29 22:44:42,795 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-29 22:44:42,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 40 events. 8/40 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 137. Up to 19 conditions per place. [2023-08-29 22:44:42,795 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-29 22:44:42,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 178 flow [2023-08-29 22:44:42,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:42,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2023-08-29 22:44:42,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38838748495788206 [2023-08-29 22:44:42,800 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2023-08-29 22:44:42,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2023-08-29 22:44:42,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:42,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2023-08-29 22:44:42,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:42,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:42,809 INFO L175 Difference]: Start difference. First operand has 43 places, 18 transitions, 82 flow. Second operand 6 states and 1291 transitions. [2023-08-29 22:44:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 178 flow [2023-08-29 22:44:42,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-29 22:44:42,812 INFO L231 Difference]: Finished difference. Result has 40 places, 16 transitions, 63 flow [2023-08-29 22:44:42,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2023-08-29 22:44:42,813 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-08-29 22:44:42,814 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 63 flow [2023-08-29 22:44:42,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:42,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:44:42,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:42,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 22:44:42,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 22:44:42,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:44:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1062034394, now seen corresponding path program 6 times [2023-08-29 22:44:42,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:44:42,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211722466] [2023-08-29 22:44:42,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:44:42,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:44:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:44:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:44:43,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:44:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211722466] [2023-08-29 22:44:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211722466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:44:43,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:44:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 22:44:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609544667] [2023-08-29 22:44:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:44:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:44:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:44:43,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:44:43,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:44:43,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 554 [2023-08-29 22:44:43,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:43,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:44:43,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 554 [2023-08-29 22:44:43,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:44:43,879 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-08-29 22:44:43,880 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 22:44:43,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 70. Up to 8 conditions per place. [2023-08-29 22:44:43,880 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-29 22:44:43,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 18 transitions, 101 flow [2023-08-29 22:44:43,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:44:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:44:43,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2023-08-29 22:44:43,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38116726835138387 [2023-08-29 22:44:43,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2023-08-29 22:44:43,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2023-08-29 22:44:43,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:44:43,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2023-08-29 22:44:43,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:43,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:43,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:43,891 INFO L175 Difference]: Start difference. First operand has 40 places, 16 transitions, 63 flow. Second operand 6 states and 1267 transitions. [2023-08-29 22:44:43,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 18 transitions, 101 flow [2023-08-29 22:44:43,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 18 transitions, 88 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-08-29 22:44:43,892 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-29 22:44:43,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-29 22:44:43,893 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-08-29 22:44:43,893 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-29 22:44:43,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:44:43,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-29 22:44:43,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-29 22:44:43,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-29 22:44:43,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-29 22:44:43,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-29 22:44:43,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-29 22:44:43,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-29 22:44:43,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-29 22:44:43,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-29 22:44:43,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-29 22:44:43,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-29 22:44:43,898 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-29 22:44:43,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-29 22:44:43,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-29 22:44:43,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-29 22:44:43,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-29 22:44:43,899 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-29 22:44:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 22:44:43,900 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:44:43,902 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:44:43,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:44:43,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:44:43 BasicIcfg [2023-08-29 22:44:43,907 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:44:43,907 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:44:43,907 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:44:43,907 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:44:43,908 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:44:24" (3/4) ... [2023-08-29 22:44:43,910 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 22:44:43,915 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 22:44:43,915 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 22:44:43,915 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 22:44:43,921 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-29 22:44:43,921 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 22:44:43,921 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 22:44:43,922 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 22:44:43,959 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 22:44:43,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:44:43,960 INFO L158 Benchmark]: Toolchain (without parser) took 20624.17ms. Allocated memory was 73.4MB in the beginning and 308.3MB in the end (delta: 234.9MB). Free memory was 50.7MB in the beginning and 122.2MB in the end (delta: -71.6MB). Peak memory consumption was 163.5MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,960 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:44:43,961 INFO L158 Benchmark]: CACSL2BoogieTranslator took 241.69ms. Allocated memory is still 73.4MB. Free memory was 50.5MB in the beginning and 39.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.10ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 36.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,961 INFO L158 Benchmark]: Boogie Preprocessor took 49.92ms. Allocated memory is still 73.4MB. Free memory was 36.9MB in the beginning and 35.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,961 INFO L158 Benchmark]: RCFGBuilder took 619.98ms. Allocated memory is still 73.4MB. Free memory was 35.1MB in the beginning and 33.4MB in the end (delta: 1.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,962 INFO L158 Benchmark]: TraceAbstraction took 19599.34ms. Allocated memory was 73.4MB in the beginning and 308.3MB in the end (delta: 234.9MB). Free memory was 32.8MB in the beginning and 125.4MB in the end (delta: -92.6MB). Peak memory consumption was 143.2MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,962 INFO L158 Benchmark]: Witness Printer took 52.61ms. Allocated memory is still 308.3MB. Free memory was 125.4MB in the beginning and 122.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:44:43,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 241.69ms. Allocated memory is still 73.4MB. Free memory was 50.5MB in the beginning and 39.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.10ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 36.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.92ms. Allocated memory is still 73.4MB. Free memory was 36.9MB in the beginning and 35.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 619.98ms. Allocated memory is still 73.4MB. Free memory was 35.1MB in the beginning and 33.4MB in the end (delta: 1.7MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19599.34ms. Allocated memory was 73.4MB in the beginning and 308.3MB in the end (delta: 234.9MB). Free memory was 32.8MB in the beginning and 125.4MB in the end (delta: -92.6MB). Peak memory consumption was 143.2MB. Max. memory is 16.1GB. * Witness Printer took 52.61ms. Allocated memory is still 308.3MB. Free memory was 125.4MB in the beginning and 122.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5s, 234 PlacesBefore, 39 PlacesAfterwards, 243 TransitionsBefore, 29 TransitionsAfterwards, 16368 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 60 ConcurrentYvCompositions, 19 ChoiceCompositions, 304 TotalNumberOfCompositions, 15678 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15678, independent: 15678, independent conditional: 0, independent unconditional: 15678, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9983, independent: 9983, independent conditional: 0, independent unconditional: 9983, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15678, independent: 5695, independent conditional: 0, independent unconditional: 5695, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 9983, unknown conditional: 0, unknown unconditional: 9983] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 83]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 352 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1902 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1129 mSDsluCounter, 771 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 595 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2348 IncrementalHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 176 mSDtfsCounter, 2348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 22:44:44,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE