./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:45:10,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:45:10,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:45:10,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:45:10,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:45:10,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:45:10,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:45:10,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:45:10,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:45:10,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:45:10,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:45:10,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:45:10,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:45:10,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:45:10,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:45:10,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:45:10,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:45:10,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:45:10,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:45:10,868 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:45:10,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:45:10,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:45:10,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:45:10,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:45:10,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:45:10,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:45:10,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:45:10,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:45:10,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:45:10,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:45:10,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:45:10,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:45:10,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:45:10,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:45:10,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:45:10,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:45:10,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:45:10,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:45:10,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:45:10,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:45:10,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:45:10,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:45:10,932 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:45:10,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:45:10,933 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:45:10,933 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:45:10,934 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:45:10,934 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:45:10,935 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:45:10,935 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:45:10,935 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:45:10,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:45:10,936 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:45:10,936 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:45:10,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:45:10,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:45:10,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:45:10,937 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:45:10,937 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:45:10,937 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:45:10,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:45:10,938 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:45:10,938 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:45:10,938 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:45:10,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:45:10,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:45:10,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:45:10,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:45:10,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:45:10,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:45:10,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:45:10,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:45:10,940 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:45:10,940 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:45:10,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:45:10,940 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:45:10,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:45:11,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:45:11,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:45:11,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:45:11,248 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:45:11,248 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:45:11,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2023-08-29 22:45:12,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:45:12,634 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:45:12,635 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c [2023-08-29 22:45:12,643 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0bdd2eae/4f5dca43cfbd48dea3df4c11243b91df/FLAGaa9ccdb0a [2023-08-29 22:45:12,657 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0bdd2eae/4f5dca43cfbd48dea3df4c11243b91df [2023-08-29 22:45:12,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:45:12,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:45:12,661 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:45:12,661 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:45:12,667 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:45:12,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5590e9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12, skipping insertion in model container [2023-08-29 22:45:12,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:45:12,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:45:12,820 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c[2584,2597] [2023-08-29 22:45:12,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:45:12,839 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:45:12,859 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-symm.wvr.c[2584,2597] [2023-08-29 22:45:12,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:45:12,880 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:45:12,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12 WrapperNode [2023-08-29 22:45:12,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:45:12,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:45:12,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:45:12,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:45:12,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,949 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 154 [2023-08-29 22:45:12,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:45:12,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:45:12,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:45:12,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:45:12,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:12,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:45:13,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:45:13,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:45:13,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:45:13,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (1/1) ... [2023-08-29 22:45:13,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:45:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:45:13,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 22:45:13,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 22:45:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:45:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 22:45:13,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 22:45:13,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 22:45:13,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 22:45:13,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:45:13,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:45:13,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:45:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:45:13,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:45:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 22:45:13,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:45:13,082 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:45:13,197 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:45:13,198 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:45:13,561 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:45:13,572 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:45:13,572 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:45:13,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:45:13 BoogieIcfgContainer [2023-08-29 22:45:13,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:45:13,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:45:13,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:45:13,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:45:13,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:45:12" (1/3) ... [2023-08-29 22:45:13,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bf7fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:45:13, skipping insertion in model container [2023-08-29 22:45:13,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:12" (2/3) ... [2023-08-29 22:45:13,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bf7fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:45:13, skipping insertion in model container [2023-08-29 22:45:13,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:45:13" (3/3) ... [2023-08-29 22:45:13,581 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2023-08-29 22:45:13,596 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:45:13,597 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 22:45:13,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:45:13,714 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 22:45:13,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 197 transitions, 410 flow [2023-08-29 22:45:13,848 INFO L130 PetriNetUnfolder]: 11/195 cut-off events. [2023-08-29 22:45:13,848 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 22:45:13,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 11/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2023-08-29 22:45:13,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 197 transitions, 410 flow [2023-08-29 22:45:13,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 191 transitions, 394 flow [2023-08-29 22:45:13,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:45:13,888 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 187 places, 191 transitions, 394 flow [2023-08-29 22:45:13,891 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 187 places, 191 transitions, 394 flow [2023-08-29 22:45:13,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 191 transitions, 394 flow [2023-08-29 22:45:13,963 INFO L130 PetriNetUnfolder]: 11/191 cut-off events. [2023-08-29 22:45:13,964 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 22:45:13,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 191 events. 11/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 167 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2023-08-29 22:45:13,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 6580 [2023-08-29 22:45:20,039 INFO L134 LiptonReduction]: Checked pairs total: 6023 [2023-08-29 22:45:20,039 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-29 22:45:20,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:45:20,068 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;@72cdbfcc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:45:20,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-29 22:45:20,070 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 22:45:20,071 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:45:20,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:20,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:45:20,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:20,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:20,077 INFO L85 PathProgramCache]: Analyzing trace with hash 796, now seen corresponding path program 1 times [2023-08-29 22:45:20,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:20,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228897722] [2023-08-29 22:45:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:20,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:20,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228897722] [2023-08-29 22:45:20,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228897722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:20,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:20,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:45:20,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868564052] [2023-08-29 22:45:20,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:20,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:45:20,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:20,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:45:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:45:20,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 429 [2023-08-29 22:45:20,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 52 flow. Second operand has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:20,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 429 [2023-08-29 22:45:20,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:20,248 INFO L130 PetriNetUnfolder]: 21/56 cut-off events. [2023-08-29 22:45:20,248 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 22:45:20,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 56 events. 21/56 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 128 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 84. Up to 57 conditions per place. [2023-08-29 22:45:20,249 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 17 selfloop transitions, 0 changer transitions 0/17 dead transitions. [2023-08-29 22:45:20,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 17 transitions, 80 flow [2023-08-29 22:45:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:45:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:45:20,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 382 transitions. [2023-08-29 22:45:20,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44522144522144524 [2023-08-29 22:45:20,264 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 382 transitions. [2023-08-29 22:45:20,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 382 transitions. [2023-08-29 22:45:20,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:20,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 382 transitions. [2023-08-29 22:45:20,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 191.0) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,276 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,278 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 52 flow. Second operand 2 states and 382 transitions. [2023-08-29 22:45:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 17 transitions, 80 flow [2023-08-29 22:45:20,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 22:45:20,281 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 38 flow [2023-08-29 22:45:20,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-29 22:45:20,286 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-29 22:45:20,286 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 38 flow [2023-08-29 22:45:20,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 181.5) internal successors, (363), 2 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:20,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:45:20,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:45:20,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:20,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash 783197, now seen corresponding path program 1 times [2023-08-29 22:45:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:20,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222916572] [2023-08-29 22:45:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:20,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:20,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:20,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222916572] [2023-08-29 22:45:20,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222916572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:20,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:20,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:45:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186372355] [2023-08-29 22:45:20,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:20,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:45:20,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:20,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:45:20,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:45:20,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 429 [2023-08-29 22:45:20,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:20,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 429 [2023-08-29 22:45:20,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:20,479 INFO L130 PetriNetUnfolder]: 19/50 cut-off events. [2023-08-29 22:45:20,479 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:45:20,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 50 events. 19/50 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 103. Up to 50 conditions per place. [2023-08-29 22:45:20,480 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-29 22:45:20,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 64 flow [2023-08-29 22:45:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:45:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:45:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-08-29 22:45:20,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2023-08-29 22:45:20,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-08-29 22:45:20,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-08-29 22:45:20,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:20,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-08-29 22:45:20,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,489 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 38 flow. Second operand 3 states and 533 transitions. [2023-08-29 22:45:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 64 flow [2023-08-29 22:45:20,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:45:20,490 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 36 flow [2023-08-29 22:45:20,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-08-29 22:45:20,491 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-29 22:45:20,491 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 36 flow [2023-08-29 22:45:20,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:20,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:45:20,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:45:20,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:20,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:20,493 INFO L85 PathProgramCache]: Analyzing trace with hash 783195, now seen corresponding path program 1 times [2023-08-29 22:45:20,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:20,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10805115] [2023-08-29 22:45:20,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:20,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:20,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10805115] [2023-08-29 22:45:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10805115] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:45:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632677278] [2023-08-29 22:45:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:45:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:45:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:45:20,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-29 22:45:20,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:20,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-29 22:45:20,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:20,668 INFO L130 PetriNetUnfolder]: 17/44 cut-off events. [2023-08-29 22:45:20,668 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:45:20,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 44 events. 17/44 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 87 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 92. Up to 44 conditions per place. [2023-08-29 22:45:20,671 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-29 22:45:20,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 58 flow [2023-08-29 22:45:20,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:45:20,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:45:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2023-08-29 22:45:20,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219114219114219 [2023-08-29 22:45:20,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2023-08-29 22:45:20,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2023-08-29 22:45:20,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:20,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2023-08-29 22:45:20,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,679 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 36 flow. Second operand 3 states and 543 transitions. [2023-08-29 22:45:20,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 58 flow [2023-08-29 22:45:20,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:20,680 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 33 flow [2023-08-29 22:45:20,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=33, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-29 22:45:20,681 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-29 22:45:20,684 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 33 flow [2023-08-29 22:45:20,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:20,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:45:20,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:45:20,685 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:20,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 752668677, now seen corresponding path program 1 times [2023-08-29 22:45:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:20,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508013972] [2023-08-29 22:45:20,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:20,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:20,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508013972] [2023-08-29 22:45:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508013972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:20,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:20,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:45:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797837058] [2023-08-29 22:45:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:20,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:45:20,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:45:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:45:20,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-08-29 22:45:20,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 33 flow. Second operand has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:20,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-08-29 22:45:20,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:20,898 INFO L130 PetriNetUnfolder]: 13/36 cut-off events. [2023-08-29 22:45:20,898 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:45:20,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 36 events. 13/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 60 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 77. Up to 36 conditions per place. [2023-08-29 22:45:20,899 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 11 selfloop transitions, 1 changer transitions 0/12 dead transitions. [2023-08-29 22:45:20,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 12 transitions, 55 flow [2023-08-29 22:45:20,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:45:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:45:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-29 22:45:20,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017094017094017 [2023-08-29 22:45:20,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-29 22:45:20,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-29 22:45:20,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:20,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-29 22:45:20,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,916 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 33 flow. Second operand 3 states and 517 transitions. [2023-08-29 22:45:20,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 12 transitions, 55 flow [2023-08-29 22:45:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 12 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:20,917 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 32 flow [2023-08-29 22:45:20,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=30, 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=32, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-08-29 22:45:20,919 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-29 22:45:20,919 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 32 flow [2023-08-29 22:45:20,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.25) internal successors, (677), 4 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:20,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 22:45:20,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 22:45:20,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:20,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:20,921 INFO L85 PathProgramCache]: Analyzing trace with hash 752668678, now seen corresponding path program 1 times [2023-08-29 22:45:20,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:20,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152513995] [2023-08-29 22:45:20,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:20,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152513995] [2023-08-29 22:45:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152513995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:20,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:45:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837855698] [2023-08-29 22:45:20,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:20,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:45:20,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:20,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:45:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:45:20,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 429 [2023-08-29 22:45:20,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:20,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:20,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 429 [2023-08-29 22:45:20,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:21,034 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-08-29 22:45:21,035 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:45:21,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 62. Up to 28 conditions per place. [2023-08-29 22:45:21,035 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 10 selfloop transitions, 1 changer transitions 0/11 dead transitions. [2023-08-29 22:45:21,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 11 transitions, 52 flow [2023-08-29 22:45:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:45:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:45:21,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 531 transitions. [2023-08-29 22:45:21,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2023-08-29 22:45:21,038 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 531 transitions. [2023-08-29 22:45:21,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 531 transitions. [2023-08-29 22:45:21,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:21,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 531 transitions. [2023-08-29 22:45:21,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,043 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 32 flow. Second operand 3 states and 531 transitions. [2023-08-29 22:45:21,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 11 transitions, 52 flow [2023-08-29 22:45:21,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 11 transitions, 51 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:21,044 INFO L231 Difference]: Finished difference. Result has 20 places, 11 transitions, 31 flow [2023-08-29 22:45:21,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=31, PETRI_PLACES=20, PETRI_TRANSITIONS=11} [2023-08-29 22:45:21,045 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-29 22:45:21,045 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 11 transitions, 31 flow [2023-08-29 22:45:21,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:21,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:21,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 22:45:21,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:21,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:21,047 INFO L85 PathProgramCache]: Analyzing trace with hash -694424491, now seen corresponding path program 1 times [2023-08-29 22:45:21,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:21,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787282480] [2023-08-29 22:45:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:21,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:21,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787282480] [2023-08-29 22:45:21,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787282480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:21,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:21,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:45:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844808361] [2023-08-29 22:45:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:45:21,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:45:21,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:45:21,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 429 [2023-08-29 22:45:21,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 11 transitions, 31 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:21,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 429 [2023-08-29 22:45:21,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:21,689 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2023-08-29 22:45:21,689 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:45:21,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 32 events. 8/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 1/33 useless extension candidates. Maximal degree in co-relation 71. Up to 16 conditions per place. [2023-08-29 22:45:21,689 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 10 selfloop transitions, 3 changer transitions 8/21 dead transitions. [2023-08-29 22:45:21,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 96 flow [2023-08-29 22:45:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:45:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:45:21,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 847 transitions. [2023-08-29 22:45:21,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39487179487179486 [2023-08-29 22:45:21,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 847 transitions. [2023-08-29 22:45:21,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 847 transitions. [2023-08-29 22:45:21,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:21,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 847 transitions. [2023-08-29 22:45:21,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.4) internal successors, (847), 5 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,701 INFO L175 Difference]: Start difference. First operand has 20 places, 11 transitions, 31 flow. Second operand 5 states and 847 transitions. [2023-08-29 22:45:21,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 96 flow [2023-08-29 22:45:21,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:45:21,702 INFO L231 Difference]: Finished difference. Result has 24 places, 11 transitions, 38 flow [2023-08-29 22:45:21,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=11, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=38, PETRI_PLACES=24, PETRI_TRANSITIONS=11} [2023-08-29 22:45:21,703 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-08-29 22:45:21,703 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 11 transitions, 38 flow [2023-08-29 22:45:21,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:21,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:45:21,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:45:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 22:45:21,703 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-29 22:45:21,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:45:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1138583347, now seen corresponding path program 2 times [2023-08-29 22:45:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:45:21,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024607180] [2023-08-29 22:45:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:45:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:45:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:45:22,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:45:22,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:45:22,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024607180] [2023-08-29 22:45:22,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024607180] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:45:22,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:45:22,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:45:22,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150055917] [2023-08-29 22:45:22,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:45:22,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:45:22,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:45:22,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:45:22,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:45:22,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 429 [2023-08-29 22:45:22,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 11 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:22,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:45:22,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 429 [2023-08-29 22:45:22,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:45:22,261 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2023-08-29 22:45:22,261 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 22:45:22,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 14 events. 2/14 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 1/15 useless extension candidates. Maximal degree in co-relation 39. Up to 6 conditions per place. [2023-08-29 22:45:22,261 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-29 22:45:22,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 12 transitions, 62 flow [2023-08-29 22:45:22,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:45:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:45:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 838 transitions. [2023-08-29 22:45:22,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906759906759907 [2023-08-29 22:45:22,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 838 transitions. [2023-08-29 22:45:22,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 838 transitions. [2023-08-29 22:45:22,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:45:22,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 838 transitions. [2023-08-29 22:45:22,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.6) internal successors, (838), 5 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:22,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:22,278 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:22,278 INFO L175 Difference]: Start difference. First operand has 24 places, 11 transitions, 38 flow. Second operand 5 states and 838 transitions. [2023-08-29 22:45:22,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 12 transitions, 62 flow [2023-08-29 22:45:22,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 12 transitions, 58 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:45:22,280 INFO L231 Difference]: Finished difference. Result has 24 places, 0 transitions, 0 flow [2023-08-29 22:45:22,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=24, PETRI_TRANSITIONS=0} [2023-08-29 22:45:22,280 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-08-29 22:45:22,280 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 0 transitions, 0 flow [2023-08-29 22:45:22,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 167.75) internal successors, (671), 4 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:45:22,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-29 22:45:22,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-29 22:45:22,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-29 22:45:22,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-29 22:45:22,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-29 22:45:22,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-29 22:45:22,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-29 22:45:22,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-29 22:45:22,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-29 22:45:22,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-29 22:45:22,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-29 22:45:22,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-29 22:45:22,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 22:45:22,291 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-08-29 22:45:22,294 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:45:22,295 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:45:22,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:45:22 BasicIcfg [2023-08-29 22:45:22,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:45:22,303 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:45:22,303 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:45:22,303 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:45:22,303 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:45:13" (3/4) ... [2023-08-29 22:45:22,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 22:45:22,320 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 22:45:22,320 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 22:45:22,324 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-08-29 22:45:22,324 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 22:45:22,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 22:45:22,325 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 22:45:22,362 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 22:45:22,362 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:45:22,363 INFO L158 Benchmark]: Toolchain (without parser) took 9703.08ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 67.7MB in the beginning and 125.3MB in the end (delta: -57.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-08-29 22:45:22,363 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:45:22,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.45ms. Allocated memory is still 90.2MB. Free memory was 67.5MB in the beginning and 56.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 22:45:22,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.42ms. Allocated memory is still 90.2MB. Free memory was 56.3MB in the beginning and 54.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:45:22,364 INFO L158 Benchmark]: Boogie Preprocessor took 53.14ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 52.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:45:22,364 INFO L158 Benchmark]: RCFGBuilder took 569.10ms. Allocated memory is still 90.2MB. Free memory was 52.5MB in the beginning and 58.9MB in the end (delta: -6.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2023-08-29 22:45:22,367 INFO L158 Benchmark]: TraceAbstraction took 8726.61ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 58.3MB in the beginning and 129.5MB in the end (delta: -71.2MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. [2023-08-29 22:45:22,367 INFO L158 Benchmark]: Witness Printer took 59.86ms. Allocated memory is still 159.4MB. Free memory was 129.5MB in the beginning and 125.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 22:45:22,369 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 65.0MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.45ms. Allocated memory is still 90.2MB. Free memory was 67.5MB in the beginning and 56.3MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.42ms. Allocated memory is still 90.2MB. Free memory was 56.3MB in the beginning and 54.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.14ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 52.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 569.10ms. Allocated memory is still 90.2MB. Free memory was 52.5MB in the beginning and 58.9MB in the end (delta: -6.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8726.61ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 58.3MB in the beginning and 129.5MB in the end (delta: -71.2MB). Peak memory consumption was 85.5MB. Max. memory is 16.1GB. * Witness Printer took 59.86ms. Allocated memory is still 159.4MB. Free memory was 129.5MB in the beginning and 125.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 187 PlacesBefore, 27 PlacesAfterwards, 191 TransitionsBefore, 20 TransitionsAfterwards, 6580 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 101 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 32 ConcurrentYvCompositions, 11 ChoiceCompositions, 232 TotalNumberOfCompositions, 6023 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6023, independent: 6023, independent conditional: 0, independent unconditional: 6023, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3933, independent: 3933, independent conditional: 0, independent unconditional: 3933, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6023, independent: 2090, independent conditional: 0, independent unconditional: 2090, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 3933, unknown conditional: 0, unknown unconditional: 3933] , Statistics on independence cache: Total cache size (in pairs): 15, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 77]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 58]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 277 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 366 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 179 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 368 IncrementalHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 19 mSDtfsCounter, 368 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 1.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 713 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 22:45:22,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE