./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_11-equ_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/06-symbeq_11-equ_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 071be118cd0932d66afa6bce30fcab76880adc6e53d2ca540223cce2e13054f4 --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 21:18:03,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:18:03,856 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:18:03,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:18:03,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:18:03,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:18:03,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:18:03,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:18:03,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:18:03,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:18:03,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:18:03,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:18:03,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:18:03,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:18:03,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:18:03,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:18:03,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:18:03,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:18:03,895 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:18:03,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:18:03,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:18:03,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:18:03,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:18:03,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:18:03,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:18:03,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:18:03,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:18:03,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:18:03,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:18:03,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:18:03,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:18:03,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:18:03,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:18:03,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:18:03,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:18:03,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:18:03,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:18:03,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:18:03,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:18:03,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:18:03,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:18:03,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:18:03,943 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:18:03,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:18:03,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:18:03,944 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:18:03,945 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:18:03,945 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:18:03,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:18:03,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:18:03,946 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:18:03,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:18:03,947 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:18:03,947 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:18:03,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:18:03,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:18:03,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:18:03,948 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:18:03,948 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:18:03,949 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:18:03,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:18:03,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:18:03,949 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:18:03,949 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:18:03,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:18:03,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:18:03,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:18:03,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:18:03,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:18:03,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:18:03,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:18:03,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:18:03,952 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:18:03,952 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:18:03,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:18:03,952 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:18:03,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 071be118cd0932d66afa6bce30fcab76880adc6e53d2ca540223cce2e13054f4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:18:04,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:18:04,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:18:04,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:18:04,304 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:18:04,305 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:18:04,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_11-equ_nr.i [2023-08-29 21:18:05,367 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:18:05,663 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:18:05,663 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_11-equ_nr.i [2023-08-29 21:18:05,676 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0515e4dc2/7958008b327946acab4009c62db8be43/FLAGa6549102d [2023-08-29 21:18:05,691 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0515e4dc2/7958008b327946acab4009c62db8be43 [2023-08-29 21:18:05,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:18:05,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:18:05,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:18:05,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:18:05,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:18:05,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:18:05" (1/1) ... [2023-08-29 21:18:05,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e989c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:05, skipping insertion in model container [2023-08-29 21:18:05,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:18:05" (1/1) ... [2023-08-29 21:18:05,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:18:05,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:18:06,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:18:06,214 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:18:06,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:18:06,343 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:18:06,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06 WrapperNode [2023-08-29 21:18:06,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:18:06,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:18:06,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:18:06,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:18:06,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,394 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,427 INFO L138 Inliner]: procedures = 265, calls = 29, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 65 [2023-08-29 21:18:06,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:18:06,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:18:06,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:18:06,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:18:06,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,465 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:18:06,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:18:06,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:18:06,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:18:06,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (1/1) ... [2023-08-29 21:18:06,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:18:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:18:06,518 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 21:18:06,539 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 21:18:06,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:18:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:18:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:18:06,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:18:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:18:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:18:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:18:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:18:06,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:18:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:18:06,560 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 21:18:06,717 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:18:06,718 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:18:06,919 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:18:06,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:18:06,925 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:18:06,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:18:06 BoogieIcfgContainer [2023-08-29 21:18:06,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:18:06,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:18:06,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:18:06,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:18:06,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:18:05" (1/3) ... [2023-08-29 21:18:06,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38454774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:18:06, skipping insertion in model container [2023-08-29 21:18:06,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:18:06" (2/3) ... [2023-08-29 21:18:06,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38454774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:18:06, skipping insertion in model container [2023-08-29 21:18:06,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:18:06" (3/3) ... [2023-08-29 21:18:06,935 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_11-equ_nr.i [2023-08-29 21:18:06,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:18:06,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-29 21:18:06,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:18:07,021 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:18:07,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 83 transitions, 171 flow [2023-08-29 21:18:07,121 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2023-08-29 21:18:07,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:07,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 1/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2023-08-29 21:18:07,126 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 83 transitions, 171 flow [2023-08-29 21:18:07,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 82 transitions, 167 flow [2023-08-29 21:18:07,134 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:18:07,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 82 transitions, 167 flow [2023-08-29 21:18:07,152 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 82 transitions, 167 flow [2023-08-29 21:18:07,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 82 transitions, 167 flow [2023-08-29 21:18:07,184 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2023-08-29 21:18:07,185 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:07,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 87 events. 1/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 61. Up to 2 conditions per place. [2023-08-29 21:18:07,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-08-29 21:18:14,951 INFO L134 LiptonReduction]: Checked pairs total: 1013 [2023-08-29 21:18:14,952 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-29 21:18:14,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:18:14,967 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;@402eb733, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:18:14,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-29 21:18:14,969 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 21:18:14,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:14,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:14,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:18:14,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:14,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash 297, now seen corresponding path program 1 times [2023-08-29 21:18:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:14,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233068393] [2023-08-29 21:18:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:14,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:15,089 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 21:18:15,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:15,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233068393] [2023-08-29 21:18:15,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233068393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:15,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:15,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:18:15,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368585788] [2023-08-29 21:18:15,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:15,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:18:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:18:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:18:15,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 168 [2023-08-29 21:18:15,129 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 39 flow. Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:18:15,129 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:15,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 168 [2023-08-29 21:18:15,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:15,165 INFO L130 PetriNetUnfolder]: 25/68 cut-off events. [2023-08-29 21:18:15,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:15,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 68 events. 25/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 213 event pairs, 25 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 123. Up to 65 conditions per place. [2023-08-29 21:18:15,167 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 13 selfloop transitions, 0 changer transitions 0/16 dead transitions. [2023-08-29 21:18:15,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 16 transitions, 61 flow [2023-08-29 21:18:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:18:15,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:18:15,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 179 transitions. [2023-08-29 21:18:15,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2023-08-29 21:18:15,179 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 179 transitions. [2023-08-29 21:18:15,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 179 transitions. [2023-08-29 21:18:15,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:15,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 179 transitions. [2023-08-29 21:18:15,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 21:18:15,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 21:18:15,188 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 21:18:15,189 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 39 flow. Second operand 2 states and 179 transitions. [2023-08-29 21:18:15,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 16 transitions, 61 flow [2023-08-29 21:18:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 60 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:18:15,192 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 34 flow [2023-08-29 21:18:15,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=34, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-08-29 21:18:15,196 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -2 predicate places. [2023-08-29 21:18:15,196 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 34 flow [2023-08-29 21:18:15,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:18:15,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:15,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:18:15,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:18:15,197 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:15,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash 9208, now seen corresponding path program 1 times [2023-08-29 21:18:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:15,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586195519] [2023-08-29 21:18:15,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:15,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:18:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:15,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586195519] [2023-08-29 21:18:15,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586195519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:15,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:15,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:18:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380290333] [2023-08-29 21:18:15,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:15,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:18:15,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:15,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:18:15,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:18:15,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 168 [2023-08-29 21:18:15,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 21:18:15,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:15,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 168 [2023-08-29 21:18:15,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:15,355 INFO L130 PetriNetUnfolder]: 30/77 cut-off events. [2023-08-29 21:18:15,356 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:15,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 77 events. 30/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 251 event pairs, 25 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 154. Up to 63 conditions per place. [2023-08-29 21:18:15,358 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 15 selfloop transitions, 1 changer transitions 4/22 dead transitions. [2023-08-29 21:18:15,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 22 transitions, 86 flow [2023-08-29 21:18:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:18:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:18:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-08-29 21:18:15,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2023-08-29 21:18:15,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-08-29 21:18:15,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-08-29 21:18:15,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:15,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-08-29 21:18:15,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 21:18:15,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:15,369 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:15,369 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 34 flow. Second operand 3 states and 249 transitions. [2023-08-29 21:18:15,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 22 transitions, 86 flow [2023-08-29 21:18:15,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 86 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:18:15,370 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 37 flow [2023-08-29 21:18:15,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-29 21:18:15,371 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 1 predicate places. [2023-08-29 21:18:15,371 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 37 flow [2023-08-29 21:18:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 21:18:15,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:15,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:18:15,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:18:15,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:15,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash 293253, now seen corresponding path program 1 times [2023-08-29 21:18:15,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:15,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740737165] [2023-08-29 21:18:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:15,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:15,852 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 21:18:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:15,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740737165] [2023-08-29 21:18:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740737165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:15,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:15,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:18:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554970587] [2023-08-29 21:18:15,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:15,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:18:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:18:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:18:15,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 168 [2023-08-29 21:18:15,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 37 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 21:18:15,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:15,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 168 [2023-08-29 21:18:15,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:15,915 INFO L130 PetriNetUnfolder]: 20/54 cut-off events. [2023-08-29 21:18:15,916 INFO L131 PetriNetUnfolder]: For 19/22 co-relation queries the response was YES. [2023-08-29 21:18:15,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 54 events. 20/54 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 158 event pairs, 20 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 114. Up to 51 conditions per place. [2023-08-29 21:18:15,917 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 10 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-29 21:18:15,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 57 flow [2023-08-29 21:18:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:18:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:18:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-29 21:18:15,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2023-08-29 21:18:15,919 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-29 21:18:15,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-29 21:18:15,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:15,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-29 21:18:15,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states 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 21:18:15,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:15,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:15,923 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 37 flow. Second operand 3 states and 243 transitions. [2023-08-29 21:18:15,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 57 flow [2023-08-29 21:18:15,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 53 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 21:18:15,925 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 33 flow [2023-08-29 21:18:15,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-08-29 21:18:15,926 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2023-08-29 21:18:15,929 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 33 flow [2023-08-29 21:18:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states 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 21:18:15,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:15,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:18:15,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:18:15,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:15,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 293254, now seen corresponding path program 1 times [2023-08-29 21:18:15,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:15,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003722444] [2023-08-29 21:18:15,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:15,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:16,083 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 21:18:16,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:16,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003722444] [2023-08-29 21:18:16,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003722444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:16,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:16,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:18:16,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890781255] [2023-08-29 21:18:16,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:18:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:18:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:18:16,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 168 [2023-08-29 21:18:16,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 21:18:16,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:16,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 168 [2023-08-29 21:18:16,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:16,146 INFO L130 PetriNetUnfolder]: 20/60 cut-off events. [2023-08-29 21:18:16,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:16,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 60 events. 20/60 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 176 event pairs, 10 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 120. Up to 29 conditions per place. [2023-08-29 21:18:16,147 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-08-29 21:18:16,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 73 flow [2023-08-29 21:18:16,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:18:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:18:16,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-29 21:18:16,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2023-08-29 21:18:16,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-29 21:18:16,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-29 21:18:16,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:16,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-29 21:18:16,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 21:18:16,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:16,156 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:16,156 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 33 flow. Second operand 3 states and 245 transitions. [2023-08-29 21:18:16,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 73 flow [2023-08-29 21:18:16,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:18:16,162 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 34 flow [2023-08-29 21:18:16,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=34, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-08-29 21:18:16,164 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 0 predicate places. [2023-08-29 21:18:16,164 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 34 flow [2023-08-29 21:18:16,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states 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 21:18:16,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:16,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:18:16,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:18:16,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:16,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:16,167 INFO L85 PathProgramCache]: Analyzing trace with hash 293240, now seen corresponding path program 1 times [2023-08-29 21:18:16,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:16,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196746780] [2023-08-29 21:18:16,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:16,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:16,257 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 21:18:16,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:16,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196746780] [2023-08-29 21:18:16,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196746780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:16,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:16,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:18:16,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135601541] [2023-08-29 21:18:16,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:16,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:18:16,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:16,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:18:16,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:18:16,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 168 [2023-08-29 21:18:16,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 21:18:16,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:16,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 168 [2023-08-29 21:18:16,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:16,315 INFO L130 PetriNetUnfolder]: 12/36 cut-off events. [2023-08-29 21:18:16,315 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 21:18:16,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 36 events. 12/36 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 90 event pairs, 12 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 83. Up to 33 conditions per place. [2023-08-29 21:18:16,316 INFO L137 encePairwiseOnDemand]: 166/168 looper letters, 8 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-29 21:18:16,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 50 flow [2023-08-29 21:18:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:18:16,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:18:16,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-29 21:18:16,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49007936507936506 [2023-08-29 21:18:16,318 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-29 21:18:16,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-29 21:18:16,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:16,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-29 21:18:16,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 21:18:16,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:16,320 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:16,320 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 34 flow. Second operand 3 states and 247 transitions. [2023-08-29 21:18:16,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 50 flow [2023-08-29 21:18:16,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 46 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:18:16,321 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 30 flow [2023-08-29 21:18:16,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-08-29 21:18:16,322 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-08-29 21:18:16,322 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 30 flow [2023-08-29 21:18:16,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 21:18:16,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:16,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:18:16,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:18:16,323 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:16,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:16,324 INFO L85 PathProgramCache]: Analyzing trace with hash 9089831, now seen corresponding path program 1 times [2023-08-29 21:18:16,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:16,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501474698] [2023-08-29 21:18:16,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:16,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:16,382 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 21:18:16,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:16,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501474698] [2023-08-29 21:18:16,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501474698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:16,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:16,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:18:16,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003588885] [2023-08-29 21:18:16,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:16,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:18:16,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:16,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:18:16,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:18:16,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 168 [2023-08-29 21:18:16,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 21:18:16,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:16,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 168 [2023-08-29 21:18:16,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:16,451 INFO L130 PetriNetUnfolder]: 10/39 cut-off events. [2023-08-29 21:18:16,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:18:16,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 39 events. 10/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 100 event pairs, 4 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 83. Up to 18 conditions per place. [2023-08-29 21:18:16,452 INFO L137 encePairwiseOnDemand]: 164/168 looper letters, 9 selfloop transitions, 3 changer transitions 1/16 dead transitions. [2023-08-29 21:18:16,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 16 transitions, 65 flow [2023-08-29 21:18:16,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:18:16,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:18:16,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-29 21:18:16,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-29 21:18:16,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-29 21:18:16,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-29 21:18:16,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:16,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-29 21:18:16,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 21:18:16,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:16,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:18:16,456 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 30 flow. Second operand 3 states and 248 transitions. [2023-08-29 21:18:16,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 16 transitions, 65 flow [2023-08-29 21:18:16,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:18:16,457 INFO L231 Difference]: Finished difference. Result has 23 places, 13 transitions, 47 flow [2023-08-29 21:18:16,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=23, PETRI_TRANSITIONS=13} [2023-08-29 21:18:16,458 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-08-29 21:18:16,458 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 13 transitions, 47 flow [2023-08-29 21:18:16,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 21:18:16,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:16,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:18:16,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:18:16,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:16,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:16,460 INFO L85 PathProgramCache]: Analyzing trace with hash 249132179, now seen corresponding path program 1 times [2023-08-29 21:18:16,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:16,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242582912] [2023-08-29 21:18:16,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:16,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:16,547 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 21:18:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:16,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242582912] [2023-08-29 21:18:16,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242582912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:16,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:16,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:18:16,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14829208] [2023-08-29 21:18:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:16,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:18:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:18:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:18:16,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 168 [2023-08-29 21:18:16,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 13 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 21:18:16,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:16,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 168 [2023-08-29 21:18:16,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:16,608 INFO L130 PetriNetUnfolder]: 10/35 cut-off events. [2023-08-29 21:18:16,609 INFO L131 PetriNetUnfolder]: For 16/19 co-relation queries the response was YES. [2023-08-29 21:18:16,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 35 events. 10/35 cut-off events. For 16/19 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 72 event pairs, 6 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 97. Up to 21 conditions per place. [2023-08-29 21:18:16,609 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 6 selfloop transitions, 2 changer transitions 4/14 dead transitions. [2023-08-29 21:18:16,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 14 transitions, 73 flow [2023-08-29 21:18:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:18:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:18:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-29 21:18:16,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2023-08-29 21:18:16,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-29 21:18:16,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-29 21:18:16,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:16,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-29 21:18:16,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 21:18:16,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 21:18:16,614 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 21:18:16,614 INFO L175 Difference]: Start difference. First operand has 23 places, 13 transitions, 47 flow. Second operand 4 states and 309 transitions. [2023-08-29 21:18:16,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 14 transitions, 73 flow [2023-08-29 21:18:16,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 14 transitions, 67 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:18:16,615 INFO L231 Difference]: Finished difference. Result has 23 places, 9 transitions, 33 flow [2023-08-29 21:18:16,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=23, PETRI_TRANSITIONS=9} [2023-08-29 21:18:16,616 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-08-29 21:18:16,616 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 9 transitions, 33 flow [2023-08-29 21:18:16,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 21:18:16,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:18:16,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:18:16,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 21:18:16,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-29 21:18:16,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:18:16,618 INFO L85 PathProgramCache]: Analyzing trace with hash -827914920, now seen corresponding path program 1 times [2023-08-29 21:18:16,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:18:16,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676324465] [2023-08-29 21:18:16,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:18:16,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:18:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:18:16,807 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 21:18:16,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:18:16,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676324465] [2023-08-29 21:18:16,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676324465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:18:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:18:16,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:18:16,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8717474] [2023-08-29 21:18:16,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:18:16,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:18:16,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:18:16,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:18:16,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:18:16,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 168 [2023-08-29 21:18:16,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 9 transitions, 33 flow. Second operand has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 21:18:16,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:18:16,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 168 [2023-08-29 21:18:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:18:17,018 INFO L130 PetriNetUnfolder]: 4/17 cut-off events. [2023-08-29 21:18:17,018 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 21:18:17,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 17 events. 4/17 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 2 based on Foata normal form. 2/19 useless extension candidates. Maximal degree in co-relation 44. Up to 9 conditions per place. [2023-08-29 21:18:17,019 INFO L137 encePairwiseOnDemand]: 165/168 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2023-08-29 21:18:17,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 9 transitions, 47 flow [2023-08-29 21:18:17,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:18:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:18:17,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 285 transitions. [2023-08-29 21:18:17,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42410714285714285 [2023-08-29 21:18:17,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 285 transitions. [2023-08-29 21:18:17,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 285 transitions. [2023-08-29 21:18:17,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:18:17,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 285 transitions. [2023-08-29 21:18:17,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 71.25) internal successors, (285), 4 states have internal predecessors, (285), 0 states have call successors, (0), 0 states 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 21:18:17,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 21:18:17,023 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 0 states 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 21:18:17,023 INFO L175 Difference]: Start difference. First operand has 23 places, 9 transitions, 33 flow. Second operand 4 states and 285 transitions. [2023-08-29 21:18:17,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 9 transitions, 47 flow [2023-08-29 21:18:17,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:18:17,023 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-29 21:18:17,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-29 21:18:17,024 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -2 predicate places. [2023-08-29 21:18:17,024 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-29 21:18:17,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 70.33333333333333) internal successors, (422), 6 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 21:18:17,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-29 21:18:17,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2023-08-29 21:18:17,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2023-08-29 21:18:17,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 21:18:17,028 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:18:17,032 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:18:17,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:18:17,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:18:17 BasicIcfg [2023-08-29 21:18:17,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:18:17,036 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:18:17,036 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:18:17,036 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:18:17,037 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:18:06" (3/4) ... [2023-08-29 21:18:17,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:18:17,044 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:18:17,047 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-08-29 21:18:17,047 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:18:17,047 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:18:17,073 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:18:17,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:18:17,074 INFO L158 Benchmark]: Toolchain (without parser) took 11379.82ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 70.5MB in the beginning and 60.9MB in the end (delta: 9.6MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,074 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:18:17,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.00ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 68.5MB in the end (delta: 1.8MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.42ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 66.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,075 INFO L158 Benchmark]: Boogie Preprocessor took 50.17ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 64.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,075 INFO L158 Benchmark]: RCFGBuilder took 449.08ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 50.5MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,076 INFO L158 Benchmark]: TraceAbstraction took 10106.34ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 49.8MB in the beginning and 63.0MB in the end (delta: -13.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,076 INFO L158 Benchmark]: Witness Printer took 37.76ms. Allocated memory is still 113.2MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:18:17,077 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 69.2MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 50.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.00ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 68.5MB in the end (delta: 1.8MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.42ms. Allocated memory is still 94.4MB. Free memory was 68.5MB in the beginning and 66.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.17ms. Allocated memory is still 94.4MB. Free memory was 66.1MB in the beginning and 64.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.08ms. Allocated memory is still 94.4MB. Free memory was 64.5MB in the beginning and 50.5MB in the end (delta: 14.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10106.34ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 49.8MB in the beginning and 63.0MB in the end (delta: -13.2MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. * Witness Printer took 37.76ms. Allocated memory is still 113.2MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.8s, 84 PlacesBefore, 21 PlacesAfterwards, 82 TransitionsBefore, 18 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 9 FixpointIterations, 62 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 85 TotalNumberOfCompositions, 1013 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 443, independent: 326, independent conditional: 0, independent unconditional: 326, dependent: 117, dependent conditional: 0, dependent unconditional: 117, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 162, independent: 144, independent conditional: 0, independent unconditional: 144, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 443, independent: 182, independent conditional: 0, independent unconditional: 182, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 162, unknown conditional: 0, unknown unconditional: 162] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 11, Positive conditional cache size: 0, Positive unconditional cache size: 11, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1000]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 93 locations, 10 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: 10.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 528 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 273 mSDsluCounter, 26 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 624 IncrementalHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 13 mSDtfsCounter, 624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=6, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 251 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:18:17,092 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 Writing output log to file Ultimate.log Result: TRUE