./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:21:12,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:21:12,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:21:12,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:21:12,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:21:12,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:21:12,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:21:12,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:21:12,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:21:12,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:21:12,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:21:12,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:21:12,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:21:12,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:21:12,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:21:12,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:21:12,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:21:12,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:21:12,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:21:12,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:21:12,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:21:12,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:21:12,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:21:12,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:21:12,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:21:12,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:21:12,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:21:12,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:21:12,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:21:12,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:21:12,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:21:12,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:21:12,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:21:12,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:21:12,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:21:12,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:21:12,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:21:12,402 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:21:12,402 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:21:12,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:21:12,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:21:12,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:21:12,440 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:21:12,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:21:12,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:21:12,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:21:12,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:21:12,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:21:12,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:21:12,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:21:12,444 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:21:12,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:21:12,445 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:21:12,445 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:21:12,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:21:12,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:21:12,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:21:12,446 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:21:12,446 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:21:12,446 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:21:12,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:21:12,447 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:21:12,447 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:21:12,447 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:21:12,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:21:12,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:21:12,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:21:12,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:21:12,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:21:12,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:21:12,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:21:12,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:21:12,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:21:12,449 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:21:12,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:21:12,450 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:21:12,450 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:21:12,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:21:12,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:21:12,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:21:12,796 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:21:12,797 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:21:12,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-30 02:21:13,947 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:21:14,235 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:21:14,239 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-30 02:21:14,265 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfb82e2c/d5aae9fcf62d4d2db15ef45935379d33/FLAGe3b84817b [2023-08-30 02:21:14,285 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bfb82e2c/d5aae9fcf62d4d2db15ef45935379d33 [2023-08-30 02:21:14,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:21:14,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:21:14,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:21:14,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:21:14,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:21:14,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8ba830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14, skipping insertion in model container [2023-08-30 02:21:14,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:21:14,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:21:14,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2023-08-30 02:21:14,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:21:14,734 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:21:14,779 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2023-08-30 02:21:14,785 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:21:14,824 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:21:14,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14 WrapperNode [2023-08-30 02:21:14,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:21:14,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:21:14,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:21:14,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:21:14,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,888 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2023-08-30 02:21:14,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:21:14,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:21:14,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:21:14,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:21:14,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,917 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:21:14,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:21:14,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:21:14,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:21:14,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (1/1) ... [2023-08-30 02:21:14,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:21:14,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:21:14,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 02:21:14,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 02:21:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 02:21:15,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 02:21:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 02:21:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 02:21:15,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 02:21:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:21:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 02:21:15,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:21:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:21:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:21:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:21:15,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:21:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:21:15,012 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:21:15,139 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:21:15,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:21:15,372 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:21:15,378 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:21:15,378 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 02:21:15,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:15 BoogieIcfgContainer [2023-08-30 02:21:15,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:21:15,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:21:15,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:21:15,384 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:21:15,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:21:14" (1/3) ... [2023-08-30 02:21:15,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a22118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:15, skipping insertion in model container [2023-08-30 02:21:15,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:14" (2/3) ... [2023-08-30 02:21:15,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a22118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:15, skipping insertion in model container [2023-08-30 02:21:15,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:15" (3/3) ... [2023-08-30 02:21:15,393 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-08-30 02:21:15,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:21:15,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 02:21:15,409 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:21:15,503 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 02:21:15,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 101 transitions, 218 flow [2023-08-30 02:21:15,601 INFO L130 PetriNetUnfolder]: 1/99 cut-off events. [2023-08-30 02:21:15,603 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:21:15,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 1/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-30 02:21:15,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 101 transitions, 218 flow [2023-08-30 02:21:15,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 95 transitions, 202 flow [2023-08-30 02:21:15,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:21:15,629 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 95 transitions, 202 flow [2023-08-30 02:21:15,631 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 95 transitions, 202 flow [2023-08-30 02:21:15,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 95 transitions, 202 flow [2023-08-30 02:21:15,657 INFO L130 PetriNetUnfolder]: 1/95 cut-off events. [2023-08-30 02:21:15,659 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:21:15,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 1/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-30 02:21:15,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2023-08-30 02:21:19,604 INFO L134 LiptonReduction]: Checked pairs total: 3225 [2023-08-30 02:21:19,605 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-30 02:21:19,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:21:19,622 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;@107f9e93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:21:19,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 02:21:19,624 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:21:19,624 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:21:19,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:19,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:21:19,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:19,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 352, now seen corresponding path program 1 times [2023-08-30 02:21:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614706207] [2023-08-30 02:21:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:19,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:19,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614706207] [2023-08-30 02:21:19,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614706207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:19,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:19,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:21:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408939892] [2023-08-30 02:21:19,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:21:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:21:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:21:19,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 187 [2023-08-30 02:21:19,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:19,818 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:19,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 187 [2023-08-30 02:21:19,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:19,911 INFO L130 PetriNetUnfolder]: 161/316 cut-off events. [2023-08-30 02:21:19,911 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 02:21:19,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 316 events. 161/316 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1340 event pairs, 161 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 563. Up to 302 conditions per place. [2023-08-30 02:21:19,916 INFO L137 encePairwiseOnDemand]: 185/187 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2023-08-30 02:21:19,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 120 flow [2023-08-30 02:21:19,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:21:19,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:21:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 216 transitions. [2023-08-30 02:21:19,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775401069518716 [2023-08-30 02:21:19,932 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 216 transitions. [2023-08-30 02:21:19,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 216 transitions. [2023-08-30 02:21:19,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:19,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 216 transitions. [2023-08-30 02:21:19,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.0) internal successors, (216), 2 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:19,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:19,942 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:19,944 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 2 states and 216 transitions. [2023-08-30 02:21:19,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 120 flow [2023-08-30 02:21:19,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 02:21:19,948 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 64 flow [2023-08-30 02:21:19,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 02:21:19,952 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 02:21:19,953 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 64 flow [2023-08-30 02:21:19,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:19,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:19,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:21:19,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:21:19,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:19,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash 346732, now seen corresponding path program 1 times [2023-08-30 02:21:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073291060] [2023-08-30 02:21:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:20,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:20,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073291060] [2023-08-30 02:21:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073291060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:20,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:20,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914397138] [2023-08-30 02:21:20,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:20,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:20,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:20,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:20,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:20,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 187 [2023-08-30 02:21:20,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:20,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 187 [2023-08-30 02:21:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:20,310 INFO L130 PetriNetUnfolder]: 153/298 cut-off events. [2023-08-30 02:21:20,310 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:20,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 298 events. 153/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1245 event pairs, 153 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 588. Up to 282 conditions per place. [2023-08-30 02:21:20,316 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-30 02:21:20,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2023-08-30 02:21:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-30 02:21:20,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5240641711229946 [2023-08-30 02:21:20,324 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-30 02:21:20,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-30 02:21:20,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:20,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-30 02:21:20,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,332 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 64 flow. Second operand 3 states and 294 transitions. [2023-08-30 02:21:20,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2023-08-30 02:21:20,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:21:20,333 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-08-30 02:21:20,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 02:21:20,334 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 02:21:20,334 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-08-30 02:21:20,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:20,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:21:20,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:21:20,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:20,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:20,339 INFO L85 PathProgramCache]: Analyzing trace with hash 346730, now seen corresponding path program 1 times [2023-08-30 02:21:20,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:20,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774884322] [2023-08-30 02:21:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:20,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:20,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774884322] [2023-08-30 02:21:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774884322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:20,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:20,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:20,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419398844] [2023-08-30 02:21:20,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:20,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:20,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:20,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-30 02:21:20,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:20,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-30 02:21:20,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:20,549 INFO L130 PetriNetUnfolder]: 145/280 cut-off events. [2023-08-30 02:21:20,549 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:20,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 280 events. 145/280 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1136 event pairs, 145 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 554. Up to 264 conditions per place. [2023-08-30 02:21:20,552 INFO L137 encePairwiseOnDemand]: 183/187 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-30 02:21:20,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 100 flow [2023-08-30 02:21:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-08-30 02:21:20,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49910873440285203 [2023-08-30 02:21:20,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-08-30 02:21:20,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-08-30 02:21:20,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:20,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-08-30 02:21:20,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,558 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 280 transitions. [2023-08-30 02:21:20,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 100 flow [2023-08-30 02:21:20,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:20,560 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2023-08-30 02:21:20,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 02:21:20,561 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-30 02:21:20,561 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2023-08-30 02:21:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:20,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:21:20,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:21:20,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:20,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 333216029, now seen corresponding path program 1 times [2023-08-30 02:21:20,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:20,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410110988] [2023-08-30 02:21:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:20,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:20,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:20,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410110988] [2023-08-30 02:21:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410110988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:20,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:20,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:20,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570681150] [2023-08-30 02:21:20,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:20,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:20,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:20,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 187 [2023-08-30 02:21:20,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:20,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 187 [2023-08-30 02:21:20,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:20,669 INFO L130 PetriNetUnfolder]: 107/218 cut-off events. [2023-08-30 02:21:20,670 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:20,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 218 events. 107/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 819 event pairs, 107 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 430. Up to 202 conditions per place. [2023-08-30 02:21:20,673 INFO L137 encePairwiseOnDemand]: 184/187 looper letters, 17 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-30 02:21:20,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 96 flow [2023-08-30 02:21:20,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-30 02:21:20,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008912655971479 [2023-08-30 02:21:20,679 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-30 02:21:20,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-30 02:21:20,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:20,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-30 02:21:20,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,686 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 281 transitions. [2023-08-30 02:21:20,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 96 flow [2023-08-30 02:21:20,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:20,688 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2023-08-30 02:21:20,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-30 02:21:20,690 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 02:21:20,690 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2023-08-30 02:21:20,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:20,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:21:20,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:21:20,691 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:20,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:20,692 INFO L85 PathProgramCache]: Analyzing trace with hash 333216031, now seen corresponding path program 1 times [2023-08-30 02:21:20,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159067281] [2023-08-30 02:21:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:20,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:20,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159067281] [2023-08-30 02:21:20,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159067281] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:20,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:20,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:21:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628335920] [2023-08-30 02:21:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:20,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:21:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:20,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:21:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:21:20,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 187 [2023-08-30 02:21:20,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:20,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 187 [2023-08-30 02:21:20,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:20,887 INFO L130 PetriNetUnfolder]: 69/156 cut-off events. [2023-08-30 02:21:20,887 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:20,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 156 events. 69/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 545 event pairs, 69 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 306. Up to 140 conditions per place. [2023-08-30 02:21:20,888 INFO L137 encePairwiseOnDemand]: 184/187 looper letters, 16 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-30 02:21:20,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2023-08-30 02:21:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-30 02:21:20,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-30 02:21:20,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-30 02:21:20,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-30 02:21:20,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:20,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-30 02:21:20,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,894 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 265 transitions. [2023-08-30 02:21:20,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2023-08-30 02:21:20,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:20,895 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-08-30 02:21:20,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 02:21:20,896 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 02:21:20,896 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-08-30 02:21:20,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:20,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:20,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:20,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:21:20,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:20,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash -96587509, now seen corresponding path program 1 times [2023-08-30 02:21:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:20,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238240269] [2023-08-30 02:21:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:20,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238240269] [2023-08-30 02:21:21,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238240269] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:21,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:21,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:21:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369172854] [2023-08-30 02:21:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:21,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:21,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:21,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:21,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:21,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-08-30 02:21:21,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:21,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-08-30 02:21:21,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:21,158 INFO L130 PetriNetUnfolder]: 64/178 cut-off events. [2023-08-30 02:21:21,158 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 02:21:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 178 events. 64/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 605 event pairs, 24 based on Foata normal form. 32/210 useless extension candidates. Maximal degree in co-relation 351. Up to 104 conditions per place. [2023-08-30 02:21:21,161 INFO L137 encePairwiseOnDemand]: 179/187 looper letters, 19 selfloop transitions, 8 changer transitions 0/29 dead transitions. [2023-08-30 02:21:21,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 122 flow [2023-08-30 02:21:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-30 02:21:21,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044563279857398 [2023-08-30 02:21:21,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-30 02:21:21,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-30 02:21:21,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:21,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-30 02:21:21,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,166 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 283 transitions. [2023-08-30 02:21:21,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 122 flow [2023-08-30 02:21:21,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:21,167 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 68 flow [2023-08-30 02:21:21,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 02:21:21,170 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 02:21:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 68 flow [2023-08-30 02:21:21,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:21,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:21:21,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:21,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:21,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1434219029, now seen corresponding path program 2 times [2023-08-30 02:21:21,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:21,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966831116] [2023-08-30 02:21:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:21,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:21:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966831116] [2023-08-30 02:21:21,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966831116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:21,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:21,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 02:21:21,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953256715] [2023-08-30 02:21:21,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:21,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 02:21:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:21:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 02:21:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-30 02:21:21,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 187 [2023-08-30 02:21:21,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 68 flow. Second operand has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:21,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 187 [2023-08-30 02:21:21,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:21,752 INFO L130 PetriNetUnfolder]: 66/203 cut-off events. [2023-08-30 02:21:21,752 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 02:21:21,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 203 events. 66/203 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 753 event pairs, 12 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 452. Up to 98 conditions per place. [2023-08-30 02:21:21,754 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 43 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2023-08-30 02:21:21,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 58 transitions, 260 flow [2023-08-30 02:21:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 02:21:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 02:21:21,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 784 transitions. [2023-08-30 02:21:21,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46583481877599525 [2023-08-30 02:21:21,757 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 784 transitions. [2023-08-30 02:21:21,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 784 transitions. [2023-08-30 02:21:21,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:21,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 784 transitions. [2023-08-30 02:21:21,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 87.11111111111111) internal successors, (784), 9 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,764 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,765 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 68 flow. Second operand 9 states and 784 transitions. [2023-08-30 02:21:21,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 58 transitions, 260 flow [2023-08-30 02:21:21,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:21:21,768 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 133 flow [2023-08-30 02:21:21,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-30 02:21:21,769 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-30 02:21:21,769 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 133 flow [2023-08-30 02:21:21,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:21,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:21,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:21:21,770 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:21,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:21,773 INFO L85 PathProgramCache]: Analyzing trace with hash -258193401, now seen corresponding path program 1 times [2023-08-30 02:21:21,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:21:21,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668507424] [2023-08-30 02:21:21,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:21,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:21:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:21:21,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:21:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:21:21,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:21:21,844 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:21:21,844 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-30 02:21:21,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 02:21:21,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 02:21:21,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 02:21:21,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 02:21:21,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 02:21:21,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 02:21:21,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 02:21:21,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-30 02:21:21,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 02:21:21,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 02:21:21,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 02:21:21,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:21:21,849 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:21,853 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:21:21,853 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:21:21,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:21:21 BasicIcfg [2023-08-30 02:21:21,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:21:21,893 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:21:21,893 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:21:21,893 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:21:21,894 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:15" (3/4) ... [2023-08-30 02:21:21,896 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:21:21,896 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:21:21,897 INFO L158 Benchmark]: Toolchain (without parser) took 7607.72ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 35.5MB in the beginning and 45.1MB in the end (delta: -9.6MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2023-08-30 02:21:21,897 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:21:21,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.88ms. Allocated memory is still 69.2MB. Free memory was 35.2MB in the beginning and 33.1MB in the end (delta: 2.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2023-08-30 02:21:21,898 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.78ms. Allocated memory is still 69.2MB. Free memory was 33.1MB in the beginning and 31.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:21:21,899 INFO L158 Benchmark]: Boogie Preprocessor took 30.58ms. Allocated memory is still 69.2MB. Free memory was 31.0MB in the beginning and 29.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:21:21,899 INFO L158 Benchmark]: RCFGBuilder took 459.21ms. Allocated memory is still 69.2MB. Free memory was 29.5MB in the beginning and 35.9MB in the end (delta: -6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 02:21:21,899 INFO L158 Benchmark]: TraceAbstraction took 6510.95ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 35.3MB in the beginning and 46.0MB in the end (delta: -10.7MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-08-30 02:21:21,900 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 100.7MB. Free memory was 46.0MB in the beginning and 45.1MB in the end (delta: 908.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:21:21,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory was 32.3MB in the beginning and 32.3MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 532.88ms. Allocated memory is still 69.2MB. Free memory was 35.2MB in the beginning and 33.1MB in the end (delta: 2.1MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.78ms. Allocated memory is still 69.2MB. Free memory was 33.1MB in the beginning and 31.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.58ms. Allocated memory is still 69.2MB. Free memory was 31.0MB in the beginning and 29.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 459.21ms. Allocated memory is still 69.2MB. Free memory was 29.5MB in the beginning and 35.9MB in the end (delta: -6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 6510.95ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 35.3MB in the beginning and 46.0MB in the end (delta: -10.7MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 100.7MB. Free memory was 46.0MB in the beginning and 45.1MB in the end (delta: 908.6kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 101 PlacesBefore, 39 PlacesAfterwards, 95 TransitionsBefore, 32 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 53 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 86 TotalNumberOfCompositions, 3225 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1775, independent: 1614, independent conditional: 0, independent unconditional: 1614, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 484, independent: 463, independent conditional: 0, independent unconditional: 463, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1775, independent: 1151, independent conditional: 0, independent unconditional: 1151, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 484, unknown conditional: 0, unknown unconditional: 484] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 84, Positive conditional cache size: 0, Positive unconditional cache size: 84, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 727]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 727. Possible FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-2, t1={5:0}, t2={6:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=-1, t1={5:0}, t2={6:0}] [L723] 0 \read(t1) VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-2, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={5:0}, t2={6:0}] [L724] 0 \read(t2) VAL [\read(t2)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={5:0}, t2={6:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 131 locations, 12 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: 6.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 196 mSDsluCounter, 63 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 714 IncrementalHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 30 mSDtfsCounter, 714 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=7, InterpolantAutomatonStates: 26, 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, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-30 02:21:21,921 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:21:23,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:21:23,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:21:23,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:21:23,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:21:23,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:21:23,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:21:23,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:21:23,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:21:23,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:21:23,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:21:23,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:21:23,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:21:23,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:21:23,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:21:23,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:21:23,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:21:23,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:21:23,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:21:23,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:21:23,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:21:23,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:21:23,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:21:23,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:21:23,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:21:23,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:21:23,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:21:23,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:21:23,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:21:23,886 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:21:23,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:21:23,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:21:23,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:21:23,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:21:23,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:21:23,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:21:23,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:21:23,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:21:23,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:21:23,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:21:23,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:21:23,896 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 02:21:23,937 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:21:23,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:21:23,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:21:23,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:21:23,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:21:23,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:21:23,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:21:23,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:21:23,941 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:21:23,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:21:23,942 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:21:23,942 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:21:23,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:21:23,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:21:23,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:21:23,943 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:21:23,943 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:21:23,944 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:21:23,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:21:23,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:21:23,944 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 02:21:23,944 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 02:21:23,945 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:21:23,945 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:21:23,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:21:23,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:21:23,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:21:23,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:21:23,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:21:23,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:21:23,946 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 02:21:23,946 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 02:21:23,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:21:23,947 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:21:23,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:21:23,947 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 02:21:23,948 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:21:23,948 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:21:24,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:21:24,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:21:24,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:21:24,310 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:21:24,312 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:21:24,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-30 02:21:25,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:21:25,716 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:21:25,717 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2023-08-30 02:21:25,728 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3889c919e/9db66c882b5d45ed9ae9148127fb661a/FLAG917737477 [2023-08-30 02:21:25,747 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3889c919e/9db66c882b5d45ed9ae9148127fb661a [2023-08-30 02:21:25,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:21:25,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:21:25,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:21:25,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:21:25,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:21:25,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:25" (1/1) ... [2023-08-30 02:21:25,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4feb7f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:25, skipping insertion in model container [2023-08-30 02:21:25,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:21:25" (1/1) ... [2023-08-30 02:21:25,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:21:25,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:21:26,136 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2023-08-30 02:21:26,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:21:26,160 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:21:26,199 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2023-08-30 02:21:26,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:21:26,246 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:21:26,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26 WrapperNode [2023-08-30 02:21:26,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:21:26,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:21:26,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:21:26,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:21:26,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,314 INFO L138 Inliner]: procedures = 172, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2023-08-30 02:21:26,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:21:26,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:21:26,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:21:26,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:21:26,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,350 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,359 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:21:26,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:21:26,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:21:26,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:21:26,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (1/1) ... [2023-08-30 02:21:26,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:21:26,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:21:26,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 02:21:26,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 02:21:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 02:21:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 02:21:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 02:21:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 02:21:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 02:21:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 02:21:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:21:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:21:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:21:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 02:21:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 02:21:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 02:21:26,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:21:26,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:21:26,452 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:21:26,633 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:21:26,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:21:26,910 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:21:26,918 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:21:26,918 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 02:21:26,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:26 BoogieIcfgContainer [2023-08-30 02:21:26,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:21:26,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:21:26,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:21:26,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:21:26,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:21:25" (1/3) ... [2023-08-30 02:21:26,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71320221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:26, skipping insertion in model container [2023-08-30 02:21:26,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:21:26" (2/3) ... [2023-08-30 02:21:26,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71320221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:21:26, skipping insertion in model container [2023-08-30 02:21:26,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:26" (3/3) ... [2023-08-30 02:21:26,934 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2023-08-30 02:21:26,952 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:21:26,952 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 02:21:26,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:21:27,074 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 02:21:27,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 102 transitions, 220 flow [2023-08-30 02:21:27,170 INFO L130 PetriNetUnfolder]: 1/100 cut-off events. [2023-08-30 02:21:27,171 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:21:27,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 1/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-30 02:21:27,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 102 transitions, 220 flow [2023-08-30 02:21:27,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 96 transitions, 204 flow [2023-08-30 02:21:27,185 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:21:27,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 96 transitions, 204 flow [2023-08-30 02:21:27,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 96 transitions, 204 flow [2023-08-30 02:21:27,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 96 transitions, 204 flow [2023-08-30 02:21:27,235 INFO L130 PetriNetUnfolder]: 1/96 cut-off events. [2023-08-30 02:21:27,235 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:21:27,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 1/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-30 02:21:27,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 940 [2023-08-30 02:21:35,654 INFO L134 LiptonReduction]: Checked pairs total: 3261 [2023-08-30 02:21:35,654 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-30 02:21:35,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:21:35,677 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;@211cc6d0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:21:35,678 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 02:21:35,679 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:21:35,680 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:21:35,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:35,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:21:35,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:35,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash 357, now seen corresponding path program 1 times [2023-08-30 02:21:35,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408370613] [2023-08-30 02:21:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:35,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:35,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:35,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:35,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 02:21:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:35,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 02:21:35,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:35,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:35,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:35,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408370613] [2023-08-30 02:21:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408370613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:35,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:35,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:21:35,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061815567] [2023-08-30 02:21:35,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:35,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:21:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:21:35,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:21:35,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 190 [2023-08-30 02:21:35,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:35,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:35,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 190 [2023-08-30 02:21:35,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:36,041 INFO L130 PetriNetUnfolder]: 161/316 cut-off events. [2023-08-30 02:21:36,042 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 02:21:36,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 316 events. 161/316 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1348 event pairs, 161 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 563. Up to 302 conditions per place. [2023-08-30 02:21:36,047 INFO L137 encePairwiseOnDemand]: 188/190 looper letters, 24 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2023-08-30 02:21:36,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 30 transitions, 120 flow [2023-08-30 02:21:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:21:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:21:36,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 218 transitions. [2023-08-30 02:21:36,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736842105263158 [2023-08-30 02:21:36,082 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 218 transitions. [2023-08-30 02:21:36,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 218 transitions. [2023-08-30 02:21:36,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:36,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 218 transitions. [2023-08-30 02:21:36,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,094 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,096 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 76 flow. Second operand 2 states and 218 transitions. [2023-08-30 02:21:36,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 30 transitions, 120 flow [2023-08-30 02:21:36,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 02:21:36,103 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 64 flow [2023-08-30 02:21:36,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 02:21:36,110 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 02:21:36,112 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 64 flow [2023-08-30 02:21:36,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:36,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:21:36,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:36,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:36,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:36,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:36,323 INFO L85 PathProgramCache]: Analyzing trace with hash 349677, now seen corresponding path program 1 times [2023-08-30 02:21:36,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096500050] [2023-08-30 02:21:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:36,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:36,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:36,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:36,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 02:21:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:36,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 02:21:36,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:36,477 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 02:21:36,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-30 02:21:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:36,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:36,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096500050] [2023-08-30 02:21:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096500050] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:36,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:36,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:36,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809234587] [2023-08-30 02:21:36,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:36,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:36,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-08-30 02:21:36,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:36,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-08-30 02:21:36,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:36,691 INFO L130 PetriNetUnfolder]: 153/298 cut-off events. [2023-08-30 02:21:36,691 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:36,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 298 events. 153/298 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1244 event pairs, 153 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 588. Up to 282 conditions per place. [2023-08-30 02:21:36,694 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-30 02:21:36,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 104 flow [2023-08-30 02:21:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-30 02:21:36,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2023-08-30 02:21:36,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-30 02:21:36,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-30 02:21:36,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:36,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-30 02:21:36,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,703 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 64 flow. Second operand 3 states and 297 transitions. [2023-08-30 02:21:36,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 104 flow [2023-08-30 02:21:36,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:21:36,705 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-08-30 02:21:36,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 02:21:36,706 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 02:21:36,706 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-08-30 02:21:36,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:36,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:36,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:21:36,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:36,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:36,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash 349679, now seen corresponding path program 1 times [2023-08-30 02:21:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780518372] [2023-08-30 02:21:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:36,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:36,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:36,920 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:36,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 02:21:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:36,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 02:21:36,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:36,996 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 02:21:36,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2023-08-30 02:21:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:37,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:37,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:37,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780518372] [2023-08-30 02:21:37,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780518372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:37,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:37,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:37,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844763476] [2023-08-30 02:21:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:37,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:37,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:37,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:37,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-30 02:21:37,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:37,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-30 02:21:37,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:37,140 INFO L130 PetriNetUnfolder]: 145/280 cut-off events. [2023-08-30 02:21:37,141 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:37,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 280 events. 145/280 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1140 event pairs, 145 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 554. Up to 264 conditions per place. [2023-08-30 02:21:37,143 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-30 02:21:37,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 100 flow [2023-08-30 02:21:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-08-30 02:21:37,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4964912280701754 [2023-08-30 02:21:37,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-08-30 02:21:37,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-08-30 02:21:37,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:37,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-08-30 02:21:37,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,150 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 283 transitions. [2023-08-30 02:21:37,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 100 flow [2023-08-30 02:21:37,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:37,151 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 60 flow [2023-08-30 02:21:37,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-30 02:21:37,152 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -7 predicate places. [2023-08-30 02:21:37,153 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 60 flow [2023-08-30 02:21:37,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:37,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:21:37,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:37,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:37,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:37,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:37,364 INFO L85 PathProgramCache]: Analyzing trace with hash 336048163, now seen corresponding path program 1 times [2023-08-30 02:21:37,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:37,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794137288] [2023-08-30 02:21:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:37,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:37,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:37,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:37,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 02:21:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:21:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:37,463 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 02:21:37,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-08-30 02:21:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:37,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:37,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:37,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794137288] [2023-08-30 02:21:37,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794137288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:37,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:37,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922985462] [2023-08-30 02:21:37,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:37,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:37,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 190 [2023-08-30 02:21:37,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:37,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 190 [2023-08-30 02:21:37,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:37,621 INFO L130 PetriNetUnfolder]: 107/218 cut-off events. [2023-08-30 02:21:37,621 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:37,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 218 events. 107/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 822 event pairs, 107 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 430. Up to 202 conditions per place. [2023-08-30 02:21:37,623 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 17 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-30 02:21:37,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 96 flow [2023-08-30 02:21:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-30 02:21:37,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49298245614035086 [2023-08-30 02:21:37,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-30 02:21:37,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-30 02:21:37,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:37,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-30 02:21:37,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,629 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 60 flow. Second operand 3 states and 281 transitions. [2023-08-30 02:21:37,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 96 flow [2023-08-30 02:21:37,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 92 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:37,631 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 58 flow [2023-08-30 02:21:37,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-30 02:21:37,633 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 02:21:37,633 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 58 flow [2023-08-30 02:21:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:37,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:37,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:21:37,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:37,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:37,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:37,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:37,848 INFO L85 PathProgramCache]: Analyzing trace with hash 336048162, now seen corresponding path program 1 times [2023-08-30 02:21:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:37,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337888203] [2023-08-30 02:21:37,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:37,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:37,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:37,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:37,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 02:21:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:37,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 02:21:37,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:37,948 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 02:21:37,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-08-30 02:21:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:38,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:38,012 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337888203] [2023-08-30 02:21:38,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337888203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:38,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:38,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:21:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438418001] [2023-08-30 02:21:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:38,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:38,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 190 [2023-08-30 02:21:38,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:38,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 190 [2023-08-30 02:21:38,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:38,126 INFO L130 PetriNetUnfolder]: 69/156 cut-off events. [2023-08-30 02:21:38,126 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 02:21:38,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 156 events. 69/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 533 event pairs, 69 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 306. Up to 140 conditions per place. [2023-08-30 02:21:38,127 INFO L137 encePairwiseOnDemand]: 187/190 looper letters, 16 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-30 02:21:38,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 92 flow [2023-08-30 02:21:38,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2023-08-30 02:21:38,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2023-08-30 02:21:38,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 292 transitions. [2023-08-30 02:21:38,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 292 transitions. [2023-08-30 02:21:38,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:38,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 292 transitions. [2023-08-30 02:21:38,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,133 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 58 flow. Second operand 3 states and 292 transitions. [2023-08-30 02:21:38,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 92 flow [2023-08-30 02:21:38,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:38,134 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 56 flow [2023-08-30 02:21:38,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 02:21:38,135 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 02:21:38,135 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 56 flow [2023-08-30 02:21:38,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:38,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:38,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:38,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:38,345 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:38,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash 603236717, now seen corresponding path program 1 times [2023-08-30 02:21:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:38,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413475031] [2023-08-30 02:21:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:38,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:38,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:38,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:38,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 02:21:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:38,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 02:21:38,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:38,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-08-30 02:21:38,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:38,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:38,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:38,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413475031] [2023-08-30 02:21:38,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413475031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:38,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:38,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:21:38,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36439102] [2023-08-30 02:21:38,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:38,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:21:38,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:38,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:21:38,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:21:38,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 190 [2023-08-30 02:21:38,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:38,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 190 [2023-08-30 02:21:38,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:38,563 INFO L130 PetriNetUnfolder]: 64/178 cut-off events. [2023-08-30 02:21:38,563 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 02:21:38,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 178 events. 64/178 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 605 event pairs, 24 based on Foata normal form. 32/210 useless extension candidates. Maximal degree in co-relation 351. Up to 104 conditions per place. [2023-08-30 02:21:38,565 INFO L137 encePairwiseOnDemand]: 182/190 looper letters, 19 selfloop transitions, 8 changer transitions 0/29 dead transitions. [2023-08-30 02:21:38,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 122 flow [2023-08-30 02:21:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:21:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:21:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-08-30 02:21:38,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5017543859649123 [2023-08-30 02:21:38,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-08-30 02:21:38,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-08-30 02:21:38,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:38,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-08-30 02:21:38,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,570 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 56 flow. Second operand 3 states and 286 transitions. [2023-08-30 02:21:38,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 122 flow [2023-08-30 02:21:38,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:21:38,571 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 68 flow [2023-08-30 02:21:38,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-30 02:21:38,572 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 02:21:38,572 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 68 flow [2023-08-30 02:21:38,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:38,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:38,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:38,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-08-30 02:21:38,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:38,782 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:38,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:38,783 INFO L85 PathProgramCache]: Analyzing trace with hash -259486798, now seen corresponding path program 1 times [2023-08-30 02:21:38,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:38,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529337693] [2023-08-30 02:21:38,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:21:38,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:38,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:38,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:38,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 02:21:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:21:38,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 02:21:38,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 02:21:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:21:39,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 02:21:39,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 02:21:39,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529337693] [2023-08-30 02:21:39,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529337693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:21:39,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:21:39,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 02:21:39,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581911023] [2023-08-30 02:21:39,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:21:39,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 02:21:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 02:21:39,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 02:21:39,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-30 02:21:39,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 190 [2023-08-30 02:21:39,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 68 flow. Second operand has 9 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:39,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:21:39,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 190 [2023-08-30 02:21:39,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:21:39,372 INFO L130 PetriNetUnfolder]: 66/203 cut-off events. [2023-08-30 02:21:39,372 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 02:21:39,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 203 events. 66/203 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 755 event pairs, 12 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 452. Up to 98 conditions per place. [2023-08-30 02:21:39,374 INFO L137 encePairwiseOnDemand]: 181/190 looper letters, 43 selfloop transitions, 11 changer transitions 0/58 dead transitions. [2023-08-30 02:21:39,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 58 transitions, 260 flow [2023-08-30 02:21:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 02:21:39,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 02:21:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 793 transitions. [2023-08-30 02:21:39,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637426900584795 [2023-08-30 02:21:39,377 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 793 transitions. [2023-08-30 02:21:39,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 793 transitions. [2023-08-30 02:21:39,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:21:39,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 793 transitions. [2023-08-30 02:21:39,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.11111111111111) internal successors, (793), 9 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:39,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:39,382 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 190.0) internal successors, (1900), 10 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:39,382 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 68 flow. Second operand 9 states and 793 transitions. [2023-08-30 02:21:39,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 58 transitions, 260 flow [2023-08-30 02:21:39,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 58 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:21:39,384 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 133 flow [2023-08-30 02:21:39,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-30 02:21:39,403 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-30 02:21:39,403 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 133 flow [2023-08-30 02:21:39,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.11111111111111) internal successors, (757), 9 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:21:39,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:21:39,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:39,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:39,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:39,614 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:21:39,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:21:39,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1995049213, now seen corresponding path program 2 times [2023-08-30 02:21:39,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 02:21:39,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823652684] [2023-08-30 02:21:39,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 02:21:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 02:21:39,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 02:21:39,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 02:21:39,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 02:21:39,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-08-30 02:21:39,712 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:21:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:21:39,790 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-30 02:21:39,790 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:21:39,791 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2023-08-30 02:21:39,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 02:21:39,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 02:21:39,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 02:21:39,793 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 02:21:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 02:21:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 02:21:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 02:21:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2023-08-30 02:21:39,794 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 02:21:39,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 02:21:39,795 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 02:21:39,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 02:21:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 02:21:39,996 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:21:39,999 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:21:39,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:21:40,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:21:40 BasicIcfg [2023-08-30 02:21:40,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:21:40,048 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:21:40,048 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:21:40,048 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:21:40,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:21:26" (3/4) ... [2023-08-30 02:21:40,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 02:21:40,053 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:21:40,053 INFO L158 Benchmark]: Toolchain (without parser) took 14303.08ms. Allocated memory was 73.4MB in the beginning and 125.8MB in the end (delta: 52.4MB). Free memory was 50.9MB in the beginning and 82.0MB in the end (delta: -31.2MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-08-30 02:21:40,054 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 73.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:21:40,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 496.33ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 30.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-08-30 02:21:40,054 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.60ms. Allocated memory was 73.4MB in the beginning and 104.9MB in the end (delta: 31.5MB). Free memory was 30.1MB in the beginning and 84.3MB in the end (delta: -54.2MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-08-30 02:21:40,055 INFO L158 Benchmark]: Boogie Preprocessor took 55.89ms. Allocated memory is still 104.9MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:21:40,055 INFO L158 Benchmark]: RCFGBuilder took 548.32ms. Allocated memory is still 104.9MB. Free memory was 82.9MB in the beginning and 64.9MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-30 02:21:40,056 INFO L158 Benchmark]: TraceAbstraction took 13124.52ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 64.1MB in the beginning and 83.1MB in the end (delta: -18.9MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2023-08-30 02:21:40,056 INFO L158 Benchmark]: Witness Printer took 5.28ms. Allocated memory is still 125.8MB. Free memory was 83.1MB in the beginning and 82.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:21:40,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 73.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 496.33ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 30.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.60ms. Allocated memory was 73.4MB in the beginning and 104.9MB in the end (delta: 31.5MB). Free memory was 30.1MB in the beginning and 84.3MB in the end (delta: -54.2MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.89ms. Allocated memory is still 104.9MB. Free memory was 84.3MB in the beginning and 82.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 548.32ms. Allocated memory is still 104.9MB. Free memory was 82.9MB in the beginning and 64.9MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13124.52ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 64.1MB in the beginning and 83.1MB in the end (delta: -18.9MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. * Witness Printer took 5.28ms. Allocated memory is still 125.8MB. Free memory was 83.1MB in the beginning and 82.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.5s, 102 PlacesBefore, 39 PlacesAfterwards, 96 TransitionsBefore, 32 TransitionsAfterwards, 940 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 88 TotalNumberOfCompositions, 3261 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1888, independent: 1725, independent conditional: 0, independent unconditional: 1725, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 498, independent: 477, independent conditional: 0, independent unconditional: 477, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1888, independent: 1248, independent conditional: 0, independent unconditional: 1248, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 498, unknown conditional: 0, unknown unconditional: 498] , Statistics on independence cache: Total cache size (in pairs): 113, Positive cache size: 102, Positive conditional cache size: 0, Positive unconditional cache size: 102, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 727]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 727. Possible FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=0, t1={5:0}, t2={7:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=1, t1={5:0}, t2={7:0}] [L723] 0 \read(t1) VAL [\read(t1)=0, arg={0:0}, arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={5:0}, t2={7:0}] [L724] 0 \read(t2) VAL [\read(t2)=1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}, pthread_mutex_lock(&ma)=0, t1={5:0}, t2={7:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] [L725] COND TRUE 0 data1==16 && data2==5 [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={7:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 132 locations, 12 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: 12.9s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 338 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 72 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 51 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 679 IncrementalHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 21 mSDtfsCounter, 679 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=7, InterpolantAutomatonStates: 26, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 304 SizeOfPredicates, 6 NumberOfNonLiveVariables, 563 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-30 02:21:40,079 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: UNKNOWN: Overapproximated counterexample