./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:19:01,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:19:01,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:19:01,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:19:01,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:19:01,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:19:01,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:19:01,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:19:01,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:19:01,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:19:01,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:19:01,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:19:01,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:19:01,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:19:01,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:19:01,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:19:01,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:19:01,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:19:01,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:19:01,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:19:01,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:19:01,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:19:01,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:19:01,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:19:01,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:19:01,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:19:01,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:19:01,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:19:01,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:19:01,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:19:01,832 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:19:01,833 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:19:01,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:19:01,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:19:01,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:19:01,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:19:01,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:19:01,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:19:01,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:19:01,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:19:01,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:19:01,840 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:19:01,873 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:19:01,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:19:01,873 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:19:01,874 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:19:01,874 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:19:01,874 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:19:01,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:19:01,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:19:01,875 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:19:01,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:19:01,875 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:19:01,875 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:19:01,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:19:01,876 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:19:01,877 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:19:01,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:19:01,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:19:01,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:19:01,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:19:01,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:19:01,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:19:01,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:19:01,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:19:01,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:19:01,878 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:19:01,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:19:01,879 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:19:01,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:19:02,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:19:02,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:19:02,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:19:02,219 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:19:02,219 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:19:02,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-29 21:19:03,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:19:03,734 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:19:03,738 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-29 21:19:03,763 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be548eb6/5ff0bb79e9804bd09c12cf7c71ca6302/FLAG3ebdb61dd [2023-08-29 21:19:03,785 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0be548eb6/5ff0bb79e9804bd09c12cf7c71ca6302 [2023-08-29 21:19:03,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:19:03,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:19:03,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:19:03,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:19:03,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:19:03,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:19:03" (1/1) ... [2023-08-29 21:19:03,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cb0726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:03, skipping insertion in model container [2023-08-29 21:19:03,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:19:03" (1/1) ... [2023-08-29 21:19:03,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:19:03,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:19:04,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:19:04,322 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:19:04,382 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:19:04,471 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:19:04,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04 WrapperNode [2023-08-29 21:19:04,473 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:19:04,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:19:04,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:19:04,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:19:04,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,524 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-08-29 21:19:04,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:19:04,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:19:04,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:19:04,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:19:04,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,561 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:19:04,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:19:04,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:19:04,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:19:04,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (1/1) ... [2023-08-29 21:19:04,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:19:04,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:19:04,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:19:04,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:19:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:19:04,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 21:19:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:19:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:19:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:19:04,636 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:19:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 21:19:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:19:04,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 21:19:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:19:04,640 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:19:04,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:19:04,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:19:04,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:19:04,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:19:04,803 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:19:04,805 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:19:05,253 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:19:05,260 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:19:05,262 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:19:05,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:19:05 BoogieIcfgContainer [2023-08-29 21:19:05,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:19:05,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:19:05,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:19:05,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:19:05,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:19:03" (1/3) ... [2023-08-29 21:19:05,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ca183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:19:05, skipping insertion in model container [2023-08-29 21:19:05,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:19:04" (2/3) ... [2023-08-29 21:19:05,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ca183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:19:05, skipping insertion in model container [2023-08-29 21:19:05,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:19:05" (3/3) ... [2023-08-29 21:19:05,272 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-08-29 21:19:05,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:19:05,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-29 21:19:05,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:19:05,357 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:19:05,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 163 transitions, 331 flow [2023-08-29 21:19:05,462 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-08-29 21:19:05,463 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:19:05,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:19:05,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 163 transitions, 331 flow [2023-08-29 21:19:05,475 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 162 transitions, 327 flow [2023-08-29 21:19:05,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:19:05,495 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 162 transitions, 327 flow [2023-08-29 21:19:05,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 162 transitions, 327 flow [2023-08-29 21:19:05,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 162 transitions, 327 flow [2023-08-29 21:19:05,550 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-08-29 21:19:05,551 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:19:05,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:19:05,555 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-29 21:19:29,471 WARN L222 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 210 DAG size of output: 203 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:19:39,469 WARN L222 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 210 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:20:01,732 WARN L222 SmtUtils]: Spent 18.53s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:20:10,764 WARN L222 SmtUtils]: Spent 9.03s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:20:22,367 WARN L222 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:20:27,631 WARN L222 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:20:33,151 WARN L222 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 207 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:20:41,157 WARN L222 SmtUtils]: Spent 5.59s on a formula simplification. DAG size of input: 207 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:22:09,990 WARN L222 SmtUtils]: Spent 1.39m on a formula simplification. DAG size of input: 345 DAG size of output: 333 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:22:37,461 WARN L222 SmtUtils]: Spent 27.46s on a formula simplification that was a NOOP. DAG size: 302 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:23:50,787 WARN L222 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 345 DAG size of output: 327 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:24:01,567 WARN L222 SmtUtils]: Spent 10.77s on a formula simplification that was a NOOP. DAG size: 293 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:24:01,576 INFO L134 LiptonReduction]: Checked pairs total: 13335 [2023-08-29 21:24:01,577 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-29 21:24:01,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:24:01,593 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;@1f8f6f92, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:24:01,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-08-29 21:24:01,595 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:24:01,595 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:24:01,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:01,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:24:01,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:01,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:01,600 INFO L85 PathProgramCache]: Analyzing trace with hash 586, now seen corresponding path program 1 times [2023-08-29 21:24:01,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:01,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958554366] [2023-08-29 21:24:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:01,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:01,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:01,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958554366] [2023-08-29 21:24:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958554366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:01,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:01,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:24:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72929278] [2023-08-29 21:24:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:01,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:24:01,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:24:01,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:24:01,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 384 [2023-08-29 21:24:01,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:01,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:01,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 384 [2023-08-29 21:24:01,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:02,145 INFO L130 PetriNetUnfolder]: 192/480 cut-off events. [2023-08-29 21:24:02,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:24:02,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 480 events. 192/480 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2573 event pairs, 192 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 890. Up to 415 conditions per place. [2023-08-29 21:24:02,153 INFO L137 encePairwiseOnDemand]: 360/384 looper letters, 30 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-08-29 21:24:02,154 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 141 flow [2023-08-29 21:24:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:24:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:24:02,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 378 transitions. [2023-08-29 21:24:02,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2023-08-29 21:24:02,174 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 378 transitions. [2023-08-29 21:24:02,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 378 transitions. [2023-08-29 21:24:02,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:02,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 378 transitions. [2023-08-29 21:24:02,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:02,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:02,185 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:02,186 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 129 flow. Second operand 2 states and 378 transitions. [2023-08-29 21:24:02,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 141 flow [2023-08-29 21:24:02,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:24:02,190 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 80 flow [2023-08-29 21:24:02,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-29 21:24:02,194 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -24 predicate places. [2023-08-29 21:24:02,194 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 80 flow [2023-08-29 21:24:02,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:02,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:02,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:24:02,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:24:02,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:02,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash 604794, now seen corresponding path program 1 times [2023-08-29 21:24:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:02,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481089729] [2023-08-29 21:24:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:02,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:02,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481089729] [2023-08-29 21:24:02,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481089729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:02,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:02,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:02,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836757599] [2023-08-29 21:24:02,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:02,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:02,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:02,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:02,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:03,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2023-08-29 21:24:03,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:03,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:03,032 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2023-08-29 21:24:03,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:03,445 INFO L130 PetriNetUnfolder]: 165/419 cut-off events. [2023-08-29 21:24:03,445 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:24:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 419 events. 165/419 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2224 event pairs, 165 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 779. Up to 358 conditions per place. [2023-08-29 21:24:03,448 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 27 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-29 21:24:03,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 132 flow [2023-08-29 21:24:03,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-29 21:24:03,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-08-29 21:24:03,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-29 21:24:03,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-29 21:24:03,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:03,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-29 21:24:03,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:03,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:03,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:03,456 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 80 flow. Second operand 3 states and 486 transitions. [2023-08-29 21:24:03,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 132 flow [2023-08-29 21:24:03,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:24:03,457 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 78 flow [2023-08-29 21:24:03,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-29 21:24:03,458 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -24 predicate places. [2023-08-29 21:24:03,458 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 78 flow [2023-08-29 21:24:03,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:03,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:03,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:24:03,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:24:03,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:03,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:03,460 INFO L85 PathProgramCache]: Analyzing trace with hash 604796, now seen corresponding path program 1 times [2023-08-29 21:24:03,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:03,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958261968] [2023-08-29 21:24:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:03,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:03,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958261968] [2023-08-29 21:24:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958261968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:03,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:03,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240416144] [2023-08-29 21:24:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:03,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:03,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:03,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2023-08-29 21:24:03,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:03,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:03,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2023-08-29 21:24:03,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:04,055 INFO L130 PetriNetUnfolder]: 164/457 cut-off events. [2023-08-29 21:24:04,061 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:24:04,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 457 events. 164/457 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2539 event pairs, 144 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2023-08-29 21:24:04,065 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 36 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-29 21:24:04,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 182 flow [2023-08-29 21:24:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:04,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:04,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-29 21:24:04,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357638888888889 [2023-08-29 21:24:04,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-29 21:24:04,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-29 21:24:04,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:04,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-29 21:24:04,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:04,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:04,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:04,072 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 78 flow. Second operand 3 states and 502 transitions. [2023-08-29 21:24:04,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 182 flow [2023-08-29 21:24:04,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:24:04,074 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 105 flow [2023-08-29 21:24:04,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-29 21:24:04,075 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-08-29 21:24:04,076 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 105 flow [2023-08-29 21:24:04,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:04,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:04,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:24:04,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:24:04,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:04,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:04,077 INFO L85 PathProgramCache]: Analyzing trace with hash 18746787, now seen corresponding path program 1 times [2023-08-29 21:24:04,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:04,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850859481] [2023-08-29 21:24:04,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:04,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850859481] [2023-08-29 21:24:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850859481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:05,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:05,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732710943] [2023-08-29 21:24:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:05,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:05,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:05,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 384 [2023-08-29 21:24:05,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:05,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:05,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 384 [2023-08-29 21:24:05,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:06,086 INFO L130 PetriNetUnfolder]: 137/402 cut-off events. [2023-08-29 21:24:06,086 INFO L131 PetriNetUnfolder]: For 39/49 co-relation queries the response was YES. [2023-08-29 21:24:06,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 402 events. 137/402 cut-off events. For 39/49 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2294 event pairs, 33 based on Foata normal form. 14/282 useless extension candidates. Maximal degree in co-relation 782. Up to 248 conditions per place. [2023-08-29 21:24:06,096 INFO L137 encePairwiseOnDemand]: 380/384 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-29 21:24:06,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 207 flow [2023-08-29 21:24:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-29 21:24:06,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053819444444444 [2023-08-29 21:24:06,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-29 21:24:06,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-29 21:24:06,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:06,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-29 21:24:06,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,103 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 105 flow. Second operand 3 states and 467 transitions. [2023-08-29 21:24:06,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 207 flow [2023-08-29 21:24:06,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:24:06,106 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 95 flow [2023-08-29 21:24:06,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-29 21:24:06,107 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-08-29 21:24:06,107 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 95 flow [2023-08-29 21:24:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:06,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:24:06,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:24:06,108 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:06,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:06,108 INFO L85 PathProgramCache]: Analyzing trace with hash 18747251, now seen corresponding path program 1 times [2023-08-29 21:24:06,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:06,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356695574] [2023-08-29 21:24:06,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:06,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:06,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:06,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356695574] [2023-08-29 21:24:06,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356695574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:06,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:06,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:06,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278669127] [2023-08-29 21:24:06,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:06,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:06,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:06,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:06,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:06,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-08-29 21:24:06,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:06,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-08-29 21:24:06,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:06,974 INFO L130 PetriNetUnfolder]: 134/388 cut-off events. [2023-08-29 21:24:06,975 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-29 21:24:06,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 388 events. 134/388 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2184 event pairs, 48 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 774. Up to 261 conditions per place. [2023-08-29 21:24:06,977 INFO L137 encePairwiseOnDemand]: 379/384 looper letters, 37 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-29 21:24:06,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 214 flow [2023-08-29 21:24:06,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-29 21:24:06,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-29 21:24:06,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-29 21:24:06,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-29 21:24:06,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:06,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-29 21:24:06,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,983 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,983 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 95 flow. Second operand 3 states and 480 transitions. [2023-08-29 21:24:06,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 214 flow [2023-08-29 21:24:06,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:24:06,985 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 122 flow [2023-08-29 21:24:06,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-29 21:24:06,985 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2023-08-29 21:24:06,986 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 122 flow [2023-08-29 21:24:06,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:06,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:06,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:24:06,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:24:06,986 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:06,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash 581147541, now seen corresponding path program 1 times [2023-08-29 21:24:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:06,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133193670] [2023-08-29 21:24:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:06,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:07,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:07,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133193670] [2023-08-29 21:24:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133193670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:07,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:07,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:24:07,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309332779] [2023-08-29 21:24:07,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:07,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:24:07,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:07,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:24:07,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:24:07,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 384 [2023-08-29 21:24:07,810 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:07,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:07,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 384 [2023-08-29 21:24:07,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:08,295 INFO L130 PetriNetUnfolder]: 144/409 cut-off events. [2023-08-29 21:24:08,295 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-29 21:24:08,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 409 events. 144/409 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2318 event pairs, 38 based on Foata normal form. 15/306 useless extension candidates. Maximal degree in co-relation 891. Up to 267 conditions per place. [2023-08-29 21:24:08,298 INFO L137 encePairwiseOnDemand]: 376/384 looper letters, 49 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2023-08-29 21:24:08,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 301 flow [2023-08-29 21:24:08,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:24:08,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:24:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-08-29 21:24:08,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39895833333333336 [2023-08-29 21:24:08,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-08-29 21:24:08,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-08-29 21:24:08,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:08,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-08-29 21:24:08,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,307 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,309 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 122 flow. Second operand 5 states and 766 transitions. [2023-08-29 21:24:08,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 301 flow [2023-08-29 21:24:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:24:08,313 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 179 flow [2023-08-29 21:24:08,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-29 21:24:08,315 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -15 predicate places. [2023-08-29 21:24:08,315 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 179 flow [2023-08-29 21:24:08,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:08,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:24:08,317 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:08,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash 150858139, now seen corresponding path program 1 times [2023-08-29 21:24:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:08,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509304203] [2023-08-29 21:24:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:08,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:08,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509304203] [2023-08-29 21:24:08,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509304203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:08,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:08,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969518979] [2023-08-29 21:24:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:08,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:08,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:08,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:08,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2023-08-29 21:24:08,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:08,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2023-08-29 21:24:08,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:08,770 INFO L130 PetriNetUnfolder]: 133/379 cut-off events. [2023-08-29 21:24:08,770 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2023-08-29 21:24:08,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 379 events. 133/379 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2066 event pairs, 115 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 896. Up to 274 conditions per place. [2023-08-29 21:24:08,772 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 34 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2023-08-29 21:24:08,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 281 flow [2023-08-29 21:24:08,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:08,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-29 21:24:08,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331597222222222 [2023-08-29 21:24:08,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-29 21:24:08,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-29 21:24:08,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:08,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-29 21:24:08,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,779 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 179 flow. Second operand 3 states and 499 transitions. [2023-08-29 21:24:08,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 281 flow [2023-08-29 21:24:08,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 271 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 21:24:08,785 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 213 flow [2023-08-29 21:24:08,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-08-29 21:24:08,785 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2023-08-29 21:24:08,786 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 213 flow [2023-08-29 21:24:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:08,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:08,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 21:24:08,787 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:08,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:08,787 INFO L85 PathProgramCache]: Analyzing trace with hash 150858140, now seen corresponding path program 1 times [2023-08-29 21:24:08,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:08,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355232033] [2023-08-29 21:24:08,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:08,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:08,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:08,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355232033] [2023-08-29 21:24:08,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355232033] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:08,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:08,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:08,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658094352] [2023-08-29 21:24:08,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:08,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:08,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:08,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:08,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:08,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2023-08-29 21:24:08,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:08,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:08,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2023-08-29 21:24:08,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:09,200 INFO L130 PetriNetUnfolder]: 100/316 cut-off events. [2023-08-29 21:24:09,200 INFO L131 PetriNetUnfolder]: For 152/153 co-relation queries the response was YES. [2023-08-29 21:24:09,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 316 events. 100/316 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1686 event pairs, 96 based on Foata normal form. 10/257 useless extension candidates. Maximal degree in co-relation 826. Up to 255 conditions per place. [2023-08-29 21:24:09,202 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 30 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-29 21:24:09,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 271 flow [2023-08-29 21:24:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:09,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-08-29 21:24:09,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175347222222222 [2023-08-29 21:24:09,204 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-08-29 21:24:09,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-08-29 21:24:09,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:09,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-08-29 21:24:09,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,210 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 213 flow. Second operand 3 states and 481 transitions. [2023-08-29 21:24:09,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 271 flow [2023-08-29 21:24:09,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:24:09,214 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 185 flow [2023-08-29 21:24:09,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-29 21:24:09,216 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -16 predicate places. [2023-08-29 21:24:09,216 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 185 flow [2023-08-29 21:24:09,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:09,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:09,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 21:24:09,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:09,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash -44451740, now seen corresponding path program 1 times [2023-08-29 21:24:09,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738023067] [2023-08-29 21:24:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:09,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738023067] [2023-08-29 21:24:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738023067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:09,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:24:09,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438351999] [2023-08-29 21:24:09,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:09,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:09,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:09,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:09,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:09,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 384 [2023-08-29 21:24:09,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:09,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 384 [2023-08-29 21:24:09,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:09,670 INFO L130 PetriNetUnfolder]: 91/316 cut-off events. [2023-08-29 21:24:09,670 INFO L131 PetriNetUnfolder]: For 86/91 co-relation queries the response was YES. [2023-08-29 21:24:09,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 316 events. 91/316 cut-off events. For 86/91 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1939 event pairs, 36 based on Foata normal form. 6/247 useless extension candidates. Maximal degree in co-relation 853. Up to 158 conditions per place. [2023-08-29 21:24:09,672 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 51 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-29 21:24:09,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 419 flow [2023-08-29 21:24:09,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:09,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:09,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-29 21:24:09,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418402777777778 [2023-08-29 21:24:09,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-29 21:24:09,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-29 21:24:09,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:09,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-29 21:24:09,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,678 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 185 flow. Second operand 3 states and 509 transitions. [2023-08-29 21:24:09,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 419 flow [2023-08-29 21:24:09,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:24:09,681 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 218 flow [2023-08-29 21:24:09,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-29 21:24:09,681 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -14 predicate places. [2023-08-29 21:24:09,681 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 218 flow [2023-08-29 21:24:09,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:09,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:09,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:09,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 21:24:09,682 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:09,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:09,683 INFO L85 PathProgramCache]: Analyzing trace with hash 381630198, now seen corresponding path program 1 times [2023-08-29 21:24:09,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:09,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501018089] [2023-08-29 21:24:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:10,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501018089] [2023-08-29 21:24:10,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501018089] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:10,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:10,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:10,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623960102] [2023-08-29 21:24:10,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:10,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:10,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:10,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:10,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-08-29 21:24:10,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:10,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:10,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-08-29 21:24:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:10,407 INFO L130 PetriNetUnfolder]: 88/308 cut-off events. [2023-08-29 21:24:10,407 INFO L131 PetriNetUnfolder]: For 142/147 co-relation queries the response was YES. [2023-08-29 21:24:10,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 308 events. 88/308 cut-off events. For 142/147 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1856 event pairs, 47 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 922. Up to 202 conditions per place. [2023-08-29 21:24:10,409 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 39 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-29 21:24:10,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 331 flow [2023-08-29 21:24:10,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:10,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-29 21:24:10,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2023-08-29 21:24:10,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-29 21:24:10,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-29 21:24:10,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:10,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-29 21:24:10,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:10,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:10,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:10,414 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 218 flow. Second operand 3 states and 471 transitions. [2023-08-29 21:24:10,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 331 flow [2023-08-29 21:24:10,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:24:10,417 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 226 flow [2023-08-29 21:24:10,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-29 21:24:10,417 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -12 predicate places. [2023-08-29 21:24:10,417 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 226 flow [2023-08-29 21:24:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:10,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:10,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:10,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 21:24:10,418 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:10,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:10,418 INFO L85 PathProgramCache]: Analyzing trace with hash 381630197, now seen corresponding path program 1 times [2023-08-29 21:24:10,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994630747] [2023-08-29 21:24:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:10,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:10,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:10,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:10,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994630747] [2023-08-29 21:24:10,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994630747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:10,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:10,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:24:10,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846939854] [2023-08-29 21:24:10,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:10,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:24:10,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:10,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:24:10,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:24:10,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-08-29 21:24:10,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:10,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:10,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-08-29 21:24:10,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:11,008 INFO L130 PetriNetUnfolder]: 85/298 cut-off events. [2023-08-29 21:24:11,008 INFO L131 PetriNetUnfolder]: For 143/149 co-relation queries the response was YES. [2023-08-29 21:24:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 298 events. 85/298 cut-off events. For 143/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1796 event pairs, 49 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 915. Up to 225 conditions per place. [2023-08-29 21:24:11,010 INFO L137 encePairwiseOnDemand]: 379/384 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-08-29 21:24:11,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 338 flow [2023-08-29 21:24:11,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:24:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:24:11,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-29 21:24:11,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105902777777778 [2023-08-29 21:24:11,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-29 21:24:11,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-29 21:24:11,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:11,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-29 21:24:11,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:11,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:11,016 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:11,016 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 226 flow. Second operand 3 states and 473 transitions. [2023-08-29 21:24:11,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 338 flow [2023-08-29 21:24:11,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:24:11,019 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 238 flow [2023-08-29 21:24:11,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-08-29 21:24:11,019 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -11 predicate places. [2023-08-29 21:24:11,019 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 238 flow [2023-08-29 21:24:11,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:11,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:11,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:11,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 21:24:11,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:11,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:11,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1378222278, now seen corresponding path program 1 times [2023-08-29 21:24:11,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:11,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690297241] [2023-08-29 21:24:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:11,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690297241] [2023-08-29 21:24:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690297241] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:11,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:11,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:24:11,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260597651] [2023-08-29 21:24:11,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:11,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:24:11,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:11,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:24:11,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:24:11,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 384 [2023-08-29 21:24:11,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:11,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:11,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 384 [2023-08-29 21:24:11,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:12,365 INFO L130 PetriNetUnfolder]: 73/266 cut-off events. [2023-08-29 21:24:12,366 INFO L131 PetriNetUnfolder]: For 133/138 co-relation queries the response was YES. [2023-08-29 21:24:12,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 266 events. 73/266 cut-off events. For 133/138 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1524 event pairs, 23 based on Foata normal form. 18/235 useless extension candidates. Maximal degree in co-relation 856. Up to 103 conditions per place. [2023-08-29 21:24:12,367 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 47 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2023-08-29 21:24:12,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 412 flow [2023-08-29 21:24:12,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:24:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:24:12,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-08-29 21:24:12,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39479166666666665 [2023-08-29 21:24:12,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-08-29 21:24:12,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-08-29 21:24:12,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:12,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-08-29 21:24:12,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:12,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:12,375 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:12,375 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 238 flow. Second operand 5 states and 758 transitions. [2023-08-29 21:24:12,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 412 flow [2023-08-29 21:24:12,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:24:12,378 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 238 flow [2023-08-29 21:24:12,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-29 21:24:12,378 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2023-08-29 21:24:12,379 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 238 flow [2023-08-29 21:24:12,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:12,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:12,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:12,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 21:24:12,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:12,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:12,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220133, now seen corresponding path program 1 times [2023-08-29 21:24:12,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:12,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700593121] [2023-08-29 21:24:12,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:12,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:12,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:12,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700593121] [2023-08-29 21:24:12,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700593121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:12,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:12,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:24:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708377152] [2023-08-29 21:24:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:12,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:24:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:24:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:24:13,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 384 [2023-08-29 21:24:13,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:13,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:13,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 384 [2023-08-29 21:24:13,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:13,510 INFO L130 PetriNetUnfolder]: 70/288 cut-off events. [2023-08-29 21:24:13,511 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-08-29 21:24:13,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 288 events. 70/288 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1720 event pairs, 26 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 949. Up to 98 conditions per place. [2023-08-29 21:24:13,513 INFO L137 encePairwiseOnDemand]: 376/384 looper letters, 40 selfloop transitions, 16 changer transitions 1/63 dead transitions. [2023-08-29 21:24:13,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 423 flow [2023-08-29 21:24:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:24:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:24:13,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2023-08-29 21:24:13,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3810763888888889 [2023-08-29 21:24:13,516 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2023-08-29 21:24:13,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2023-08-29 21:24:13,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:13,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2023-08-29 21:24:13,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:13,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:13,521 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:13,521 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 238 flow. Second operand 6 states and 878 transitions. [2023-08-29 21:24:13,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 423 flow [2023-08-29 21:24:13,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 407 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:24:13,525 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 278 flow [2023-08-29 21:24:13,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-08-29 21:24:13,525 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-08-29 21:24:13,525 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 278 flow [2023-08-29 21:24:13,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:13,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:13,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 21:24:13,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:13,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:13,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220132, now seen corresponding path program 1 times [2023-08-29 21:24:13,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:13,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908628277] [2023-08-29 21:24:13,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:13,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:14,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:14,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:14,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908628277] [2023-08-29 21:24:14,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908628277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:14,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:14,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:24:14,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507221883] [2023-08-29 21:24:14,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:14,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:24:14,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:14,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:24:14,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:24:14,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 384 [2023-08-29 21:24:14,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:14,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:14,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 384 [2023-08-29 21:24:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:14,893 INFO L130 PetriNetUnfolder]: 65/280 cut-off events. [2023-08-29 21:24:14,893 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-29 21:24:14,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 280 events. 65/280 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1674 event pairs, 32 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 980. Up to 123 conditions per place. [2023-08-29 21:24:14,895 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 38 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-08-29 21:24:14,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 404 flow [2023-08-29 21:24:14,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:24:14,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:24:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-08-29 21:24:14,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37604166666666666 [2023-08-29 21:24:14,898 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-08-29 21:24:14,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-08-29 21:24:14,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:14,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-08-29 21:24:14,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:14,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:14,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:14,902 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 278 flow. Second operand 5 states and 722 transitions. [2023-08-29 21:24:14,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 404 flow [2023-08-29 21:24:14,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 388 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 21:24:14,905 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 290 flow [2023-08-29 21:24:14,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-08-29 21:24:14,906 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2023-08-29 21:24:14,906 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 290 flow [2023-08-29 21:24:14,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:14,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:14,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 21:24:14,907 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:14,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:14,907 INFO L85 PathProgramCache]: Analyzing trace with hash 224780215, now seen corresponding path program 1 times [2023-08-29 21:24:14,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:14,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272394680] [2023-08-29 21:24:14,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:14,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:24:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:24:15,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:24:15,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272394680] [2023-08-29 21:24:15,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272394680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:24:15,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:24:15,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:24:15,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013176916] [2023-08-29 21:24:15,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:24:15,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:24:15,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:24:15,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:24:15,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:24:15,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 384 [2023-08-29 21:24:15,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:15,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:24:15,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 384 [2023-08-29 21:24:15,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:24:16,355 INFO L130 PetriNetUnfolder]: 67/263 cut-off events. [2023-08-29 21:24:16,355 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2023-08-29 21:24:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 263 events. 67/263 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1467 event pairs, 9 based on Foata normal form. 20/261 useless extension candidates. Maximal degree in co-relation 1017. Up to 148 conditions per place. [2023-08-29 21:24:16,357 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 55 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2023-08-29 21:24:16,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 549 flow [2023-08-29 21:24:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:24:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:24:16,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2023-08-29 21:24:16,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3820684523809524 [2023-08-29 21:24:16,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2023-08-29 21:24:16,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2023-08-29 21:24:16,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:24:16,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2023-08-29 21:24:16,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:16,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:16,366 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:16,366 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 290 flow. Second operand 7 states and 1027 transitions. [2023-08-29 21:24:16,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 549 flow [2023-08-29 21:24:16,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:24:16,369 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 378 flow [2023-08-29 21:24:16,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-29 21:24:16,370 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-29 21:24:16,370 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 378 flow [2023-08-29 21:24:16,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:24:16,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:24:16,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:16,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 21:24:16,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-29 21:24:16,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:24:16,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1674345171, now seen corresponding path program 1 times [2023-08-29 21:24:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:24:16,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262374671] [2023-08-29 21:24:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:24:16,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:24:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 21:24:16,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 21:24:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 21:24:16,436 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 21:24:16,436 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 21:24:16,436 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (55 of 56 remaining) [2023-08-29 21:24:16,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 56 remaining) [2023-08-29 21:24:16,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 56 remaining) [2023-08-29 21:24:16,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 56 remaining) [2023-08-29 21:24:16,438 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 56 remaining) [2023-08-29 21:24:16,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 56 remaining) [2023-08-29 21:24:16,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 56 remaining) [2023-08-29 21:24:16,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 56 remaining) [2023-08-29 21:24:16,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 56 remaining) [2023-08-29 21:24:16,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 56 remaining) [2023-08-29 21:24:16,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 56 remaining) [2023-08-29 21:24:16,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 56 remaining) [2023-08-29 21:24:16,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 56 remaining) [2023-08-29 21:24:16,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 56 remaining) [2023-08-29 21:24:16,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 56 remaining) [2023-08-29 21:24:16,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 56 remaining) [2023-08-29 21:24:16,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 56 remaining) [2023-08-29 21:24:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 56 remaining) [2023-08-29 21:24:16,444 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 56 remaining) [2023-08-29 21:24:16,445 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 56 remaining) [2023-08-29 21:24:16,446 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 56 remaining) [2023-08-29 21:24:16,447 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 56 remaining) [2023-08-29 21:24:16,448 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 56 remaining) [2023-08-29 21:24:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 56 remaining) [2023-08-29 21:24:16,449 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 56 remaining) [2023-08-29 21:24:16,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 21:24:16,449 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:24:16,455 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:24:16,455 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:24:16,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:24:16 BasicIcfg [2023-08-29 21:24:16,494 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:24:16,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:24:16,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:24:16,495 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:24:16,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:19:05" (3/4) ... [2023-08-29 21:24:16,497 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 21:24:16,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:24:16,498 INFO L158 Benchmark]: Toolchain (without parser) took 312708.50ms. Allocated memory was 90.2MB in the beginning and 308.3MB in the end (delta: 218.1MB). Free memory was 61.3MB in the beginning and 208.4MB in the end (delta: -147.1MB). Peak memory consumption was 70.2MB. Max. memory is 16.1GB. [2023-08-29 21:24:16,498 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:24:16,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 683.99ms. Allocated memory is still 90.2MB. Free memory was 61.1MB in the beginning and 44.4MB in the end (delta: 16.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2023-08-29 21:24:16,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.03ms. Allocated memory is still 90.2MB. Free memory was 44.4MB in the beginning and 42.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:24:16,499 INFO L158 Benchmark]: Boogie Preprocessor took 36.80ms. Allocated memory is still 90.2MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:24:16,499 INFO L158 Benchmark]: RCFGBuilder took 698.68ms. Allocated memory is still 90.2MB. Free memory was 39.9MB in the beginning and 54.9MB in the end (delta: -15.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-08-29 21:24:16,500 INFO L158 Benchmark]: TraceAbstraction took 311227.70ms. Allocated memory was 90.2MB in the beginning and 308.3MB in the end (delta: 218.1MB). Free memory was 54.4MB in the beginning and 209.5MB in the end (delta: -155.1MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. [2023-08-29 21:24:16,500 INFO L158 Benchmark]: Witness Printer took 2.63ms. Allocated memory is still 308.3MB. Free memory is still 208.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:24:16,501 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory is still 38.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 683.99ms. Allocated memory is still 90.2MB. Free memory was 61.1MB in the beginning and 44.4MB in the end (delta: 16.6MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.03ms. Allocated memory is still 90.2MB. Free memory was 44.4MB in the beginning and 42.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.80ms. Allocated memory is still 90.2MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 698.68ms. Allocated memory is still 90.2MB. Free memory was 39.9MB in the beginning and 54.9MB in the end (delta: -15.1MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 311227.70ms. Allocated memory was 90.2MB in the beginning and 308.3MB in the end (delta: 218.1MB). Free memory was 54.4MB in the beginning and 209.5MB in the end (delta: -155.1MB). Peak memory consumption was 61.5MB. Max. memory is 16.1GB. * Witness Printer took 2.63ms. Allocated memory is still 308.3MB. Free memory is still 208.4MB. 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: 296.1s, 166 PlacesBefore, 67 PlacesAfterwards, 162 TransitionsBefore, 63 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 9 FixpointIterations, 157 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 221 TotalNumberOfCompositions, 13335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5821, independent: 5252, independent conditional: 0, independent unconditional: 5252, dependent: 569, dependent conditional: 0, dependent unconditional: 569, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1468, independent conditional: 0, independent unconditional: 1468, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5821, independent: 3784, independent conditional: 0, independent unconditional: 3784, dependent: 493, dependent conditional: 0, dependent unconditional: 493, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 255, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, t1={6:0}] [L1256] EXPR 0 A->next VAL [A->next={-3:0}, A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, t1={6:0}] [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next VAL [A={-2:0}, A_mutex={1:0}, B->next={-4:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, t1={6:0}] [L1261] 0 p->datum [L1263] 0 return 0; VAL [A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, \result=0, arg={0:0}, p={-4:0}, t1={6:0}] [L1263] 0 return 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: -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: -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: -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: 1254]: 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: -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: -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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 201 locations, 56 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: 311.1s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 296.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2617 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3267 IncrementalHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 150 mSDtfsCounter, 3267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378occurred in iteration=15, InterpolantAutomatonStates: 57, 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, 0.3s SatisfiabilityAnalysisTime, 6.7s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 [2023-08-29 21:24:16,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/goblint-regression/09-regions_04-list2_nr.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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:24:18,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:24:18,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:24:18,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:24:18,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:24:18,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:24:18,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:24:18,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:24:18,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:24:18,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:24:18,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:24:18,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:24:18,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:24:18,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:24:18,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:24:18,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:24:18,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:24:18,437 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:24:18,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:24:18,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:24:18,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:24:18,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:24:18,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:24:18,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:24:18,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:24:18,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:24:18,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:24:18,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:24:18,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:24:18,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:24:18,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:24:18,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:24:18,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:24:18,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:24:18,464 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:24:18,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:24:18,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:24:18,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:24:18,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:24:18,467 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:24:18,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:24:18,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 21:24:18,487 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:24:18,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:24:18,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:24:18,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:24:18,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:24:18,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:24:18,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:24:18,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:24:18,490 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:24:18,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:24:18,490 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:24:18,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:24:18,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:24:18,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:24:18,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:24:18,491 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:24:18,491 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:24:18,491 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:24:18,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:24:18,492 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:24:18,492 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 21:24:18,492 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 21:24:18,492 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:24:18,492 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:24:18,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:24:18,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:24:18,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:24:18,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:24:18,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:24:18,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:24:18,494 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 21:24:18,494 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 21:24:18,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:24:18,495 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:24:18,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:24:18,495 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 21:24:18,496 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:24:18,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:24:18,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:24:18,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:24:18,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:24:18,813 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:24:18,813 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:24:18,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-29 21:24:19,937 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:24:20,224 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:24:20,224 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-29 21:24:20,238 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e848bea/6c153252249249f98f158d9bac95d613/FLAGb969a7535 [2023-08-29 21:24:20,252 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83e848bea/6c153252249249f98f158d9bac95d613 [2023-08-29 21:24:20,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:24:20,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:24:20,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:24:20,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:24:20,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:24:20,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:20,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1655515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20, skipping insertion in model container [2023-08-29 21:24:20,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:20,266 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:24:20,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:24:20,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:24:20,845 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:24:20,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:24:20,948 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:24:20,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20 WrapperNode [2023-08-29 21:24:20,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:24:20,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:24:20,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:24:20,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:24:20,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:20,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:20,995 INFO L138 Inliner]: procedures = 369, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 87 [2023-08-29 21:24:20,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:24:20,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:24:20,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:24:20,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:24:21,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:24:21,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:24:21,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:24:21,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:24:21,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (1/1) ... [2023-08-29 21:24:21,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:24:21,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:24:21,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:24:21,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:24:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 21:24:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:24:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 21:24:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:24:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 21:24:21,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 21:24:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:24:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 21:24:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:24:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 21:24:21,139 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:24:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:24:21,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:24:21,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:24:21,141 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:24:21,291 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:24:21,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:24:21,843 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:24:21,849 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:24:21,849 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:24:21,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:24:21 BoogieIcfgContainer [2023-08-29 21:24:21,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:24:21,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:24:21,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:24:21,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:24:21,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:24:20" (1/3) ... [2023-08-29 21:24:21,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeda570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:24:21, skipping insertion in model container [2023-08-29 21:24:21,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:24:20" (2/3) ... [2023-08-29 21:24:21,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aeda570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:24:21, skipping insertion in model container [2023-08-29 21:24:21,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:24:21" (3/3) ... [2023-08-29 21:24:21,861 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-08-29 21:24:21,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:24:21,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-29 21:24:21,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:24:22,008 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:24:22,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 164 transitions, 333 flow [2023-08-29 21:24:22,130 INFO L130 PetriNetUnfolder]: 0/163 cut-off events. [2023-08-29 21:24:22,130 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:24:22,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 221 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:24:22,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 164 transitions, 333 flow [2023-08-29 21:24:22,142 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 163 transitions, 329 flow [2023-08-29 21:24:22,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:24:22,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 163 transitions, 329 flow [2023-08-29 21:24:22,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 163 transitions, 329 flow [2023-08-29 21:24:22,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 163 transitions, 329 flow [2023-08-29 21:24:22,218 INFO L130 PetriNetUnfolder]: 0/163 cut-off events. [2023-08-29 21:24:22,220 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:24:22,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-29 21:24:22,223 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-29 21:25:15,640 WARN L222 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 117 DAG size of output: 110 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:25:33,022 WARN L222 SmtUtils]: Spent 12.84s on a formula simplification. DAG size of input: 117 DAG size of output: 110 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:26:40,085 WARN L222 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:27:06,882 WARN L222 SmtUtils]: Spent 26.79s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:28:11,405 WARN L222 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:28:36,802 WARN L222 SmtUtils]: Spent 25.40s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:29:17,436 WARN L222 SmtUtils]: Spent 17.40s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:29:31,462 WARN L222 SmtUtils]: Spent 14.02s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:29:46,944 WARN L222 SmtUtils]: Spent 15.48s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:30:02,208 WARN L222 SmtUtils]: Spent 15.26s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:30:08,005 WARN L222 SmtUtils]: Spent 5.79s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:30:33,859 WARN L222 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:30:50,731 WARN L222 SmtUtils]: Spent 12.52s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15