./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:45:14,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:45:14,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:45:14,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:45:14,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:45:14,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:45:14,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:45:14,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:45:14,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:45:14,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:45:14,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:45:14,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:45:14,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:45:14,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:45:14,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:45:14,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:45:14,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:45:14,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:45:14,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:45:14,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:45:14,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:45:14,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:45:14,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:45:14,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:45:14,918 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:45:14,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:45:14,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:45:14,920 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:45:14,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:45:14,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:45:14,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:45:14,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:45:14,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:45:14,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:45:14,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:45:14,927 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:45:14,928 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:45:14,928 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:45:14,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:45:14,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:45:14,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:45:14,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:45:14,954 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:45:14,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:45:14,955 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:45:14,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:45:14,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:45:14,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:45:14,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:45:14,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:45:14,958 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:45:14,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:45:14,958 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:45:14,958 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:45:14,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:45:14,959 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:45:14,960 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:45:14,960 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:45:14,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:45:14,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:45:14,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:45:14,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:14,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:45:14,961 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:45:14,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb302bfc042709458f72100356b9fd74bb7921271e539fc7dcbd801222f139c8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:45:15,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:45:15,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:45:15,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:45:15,217 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:45:15,217 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:45:15,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-08-31 23:45:16,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:45:16,396 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:45:16,399 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-08-31 23:45:16,413 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222ce49a4/14a89d5a9fc6497c8f6f2b1299bed1a7/FLAG52bfd832c [2023-08-31 23:45:16,428 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/222ce49a4/14a89d5a9fc6497c8f6f2b1299bed1a7 [2023-08-31 23:45:16,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:45:16,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:45:16,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:16,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:45:16,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:45:16,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1902e501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16, skipping insertion in model container [2023-08-31 23:45:16,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:45:16,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:45:16,599 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-08-31 23:45:16,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:16,732 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:45:16,743 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i[992,1005] [2023-08-31 23:45:16,778 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:16,803 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:16,804 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:45:16,808 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:45:16,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16 WrapperNode [2023-08-31 23:45:16,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:16,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:16,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:45:16,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:45:16,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,853 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-31 23:45:16,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:45:16,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:45:16,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:45:16,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:45:16,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:45:16,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:45:16,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:45:16,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:45:16,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (1/1) ... [2023-08-31 23:45:16,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:45:16,902 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) [2023-08-31 23:45:16,914 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 [2023-08-31 23:45:16,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:45:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:45:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:45:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:45:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:45:16,933 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:45:16,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:45:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:45:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:45:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:45:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:45:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:45:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:45:16,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:45:16,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:45:16,935 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:45:17,022 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:45:17,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:45:17,232 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:45:17,236 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:45:17,237 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:45:17,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:17 BoogieIcfgContainer [2023-08-31 23:45:17,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:45:17,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:45:17,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:45:17,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:45:17,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:45:16" (1/3) ... [2023-08-31 23:45:17,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9ab9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:17, skipping insertion in model container [2023-08-31 23:45:17,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:16" (2/3) ... [2023-08-31 23:45:17,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9ab9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:45:17, skipping insertion in model container [2023-08-31 23:45:17,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:17" (3/3) ... [2023-08-31 23:45:17,243 INFO L112 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc_pso.opt_rmo.oepc_rmo.opt_tso.oepc_tso.opt.i [2023-08-31 23:45:17,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:45:17,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:45:17,267 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:45:17,340 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:45:17,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 205 flow [2023-08-31 23:45:17,408 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2023-08-31 23:45:17,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:17,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:45:17,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 205 flow [2023-08-31 23:45:17,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 88 transitions, 185 flow [2023-08-31 23:45:17,417 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:45:17,427 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-31 23:45:17,429 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-31 23:45:17,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 185 flow [2023-08-31 23:45:17,450 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-31 23:45:17,451 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:17,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:45:17,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:45:19,473 INFO L134 LiptonReduction]: Checked pairs total: 3100 [2023-08-31 23:45:19,474 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-31 23:45:19,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:45:19,487 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;@13275faf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:45:19,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:45:19,488 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:45:19,488 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:19,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:19,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:45:19,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:19,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:19,492 INFO L85 PathProgramCache]: Analyzing trace with hash 342, now seen corresponding path program 1 times [2023-08-31 23:45:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986143409] [2023-08-31 23:45:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:19,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:19,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986143409] [2023-08-31 23:45:19,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986143409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:19,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:19,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:45:19,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426387365] [2023-08-31 23:45:19,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:19,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:45:19,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:19,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:45:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:45:19,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 188 [2023-08-31 23:45:19,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:19,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:19,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 188 [2023-08-31 23:45:19,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:19,676 INFO L130 PetriNetUnfolder]: 272/458 cut-off events. [2023-08-31 23:45:19,676 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 23:45:19,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 458 events. 272/458 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2001 event pairs, 272 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 910. Up to 433 conditions per place. [2023-08-31 23:45:19,680 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-31 23:45:19,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-31 23:45:19,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:45:19,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:45:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 201 transitions. [2023-08-31 23:45:19,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345744680851063 [2023-08-31 23:45:19,689 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 201 transitions. [2023-08-31 23:45:19,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 201 transitions. [2023-08-31 23:45:19,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:19,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 201 transitions. [2023-08-31 23:45:19,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:19,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:19,696 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:19,697 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 201 transitions. [2023-08-31 23:45:19,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-31 23:45:19,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:19,699 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-31 23:45:19,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-31 23:45:19,703 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-31 23:45:19,703 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-31 23:45:19,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:19,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:19,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:45:19,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:19,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -683135229, now seen corresponding path program 1 times [2023-08-31 23:45:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:19,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926053578] [2023-08-31 23:45:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:20,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:20,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926053578] [2023-08-31 23:45:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926053578] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:45:20,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994431166] [2023-08-31 23:45:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:45:20,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:45:20,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:45:20,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 188 [2023-08-31 23:45:20,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:20,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 188 [2023-08-31 23:45:20,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:20,322 INFO L130 PetriNetUnfolder]: 293/466 cut-off events. [2023-08-31 23:45:20,323 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:45:20,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 466 events. 293/466 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1827 event pairs, 51 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 954. Up to 222 conditions per place. [2023-08-31 23:45:20,326 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 25 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-31 23:45:20,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 126 flow [2023-08-31 23:45:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:45:20,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:45:20,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 475 transitions. [2023-08-31 23:45:20,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42109929078014185 [2023-08-31 23:45:20,332 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 475 transitions. [2023-08-31 23:45:20,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 475 transitions. [2023-08-31 23:45:20,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:20,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 475 transitions. [2023-08-31 23:45:20,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.16666666666667) internal successors, (475), 6 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,338 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,338 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 475 transitions. [2023-08-31 23:45:20,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 126 flow [2023-08-31 23:45:20,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:45:20,339 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 50 flow [2023-08-31 23:45:20,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-31 23:45:20,345 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-08-31 23:45:20,345 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 50 flow [2023-08-31 23:45:20,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:20,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:20,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:45:20,346 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:20,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:20,348 INFO L85 PathProgramCache]: Analyzing trace with hash -683135279, now seen corresponding path program 1 times [2023-08-31 23:45:20,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:20,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543139121] [2023-08-31 23:45:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:20,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:20,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543139121] [2023-08-31 23:45:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543139121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:20,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:20,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476477485] [2023-08-31 23:45:20,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:20,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:45:20,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:45:20,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:45:20,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-08-31 23:45:20,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:20,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-08-31 23:45:20,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:20,637 INFO L130 PetriNetUnfolder]: 953/1504 cut-off events. [2023-08-31 23:45:20,637 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-31 23:45:20,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3225 conditions, 1504 events. 953/1504 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7243 event pairs, 265 based on Foata normal form. 106/1610 useless extension candidates. Maximal degree in co-relation 3221. Up to 634 conditions per place. [2023-08-31 23:45:20,642 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 26 selfloop transitions, 6 changer transitions 18/50 dead transitions. [2023-08-31 23:45:20,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 50 transitions, 228 flow [2023-08-31 23:45:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:45:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:45:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2023-08-31 23:45:20,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475531914893617 [2023-08-31 23:45:20,644 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2023-08-31 23:45:20,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2023-08-31 23:45:20,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:20,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2023-08-31 23:45:20,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,647 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 50 flow. Second operand 5 states and 447 transitions. [2023-08-31 23:45:20,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 50 transitions, 228 flow [2023-08-31 23:45:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 50 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:45:20,649 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 98 flow [2023-08-31 23:45:20,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-08-31 23:45:20,650 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-31 23:45:20,650 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 98 flow [2023-08-31 23:45:20,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:20,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:45:20,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:20,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 297602452, now seen corresponding path program 1 times [2023-08-31 23:45:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279613811] [2023-08-31 23:45:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:20,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:20,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:20,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279613811] [2023-08-31 23:45:20,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279613811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:20,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:20,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:45:20,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447072569] [2023-08-31 23:45:20,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:20,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:45:20,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:20,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:45:20,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:45:20,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-08-31 23:45:20,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:20,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-08-31 23:45:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:20,875 INFO L130 PetriNetUnfolder]: 663/1082 cut-off events. [2023-08-31 23:45:20,876 INFO L131 PetriNetUnfolder]: For 891/891 co-relation queries the response was YES. [2023-08-31 23:45:20,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3213 conditions, 1082 events. 663/1082 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4721 event pairs, 205 based on Foata normal form. 82/1164 useless extension candidates. Maximal degree in co-relation 3206. Up to 360 conditions per place. [2023-08-31 23:45:20,879 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 28 selfloop transitions, 6 changer transitions 26/60 dead transitions. [2023-08-31 23:45:20,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 366 flow [2023-08-31 23:45:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:45:20,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:45:20,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 608 transitions. [2023-08-31 23:45:20,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46200607902735563 [2023-08-31 23:45:20,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 608 transitions. [2023-08-31 23:45:20,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 608 transitions. [2023-08-31 23:45:20,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:20,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 608 transitions. [2023-08-31 23:45:20,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.85714285714286) internal successors, (608), 7 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,885 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,885 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 98 flow. Second operand 7 states and 608 transitions. [2023-08-31 23:45:20,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 366 flow [2023-08-31 23:45:20,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 60 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:20,888 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 132 flow [2023-08-31 23:45:20,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2023-08-31 23:45:20,889 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-31 23:45:20,889 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 132 flow [2023-08-31 23:45:20,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:20,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:45:20,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:20,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1181252611, now seen corresponding path program 1 times [2023-08-31 23:45:20,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:20,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129289179] [2023-08-31 23:45:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:20,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129289179] [2023-08-31 23:45:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129289179] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:20,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:45:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050774601] [2023-08-31 23:45:20,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:45:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:45:20,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:45:20,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-08-31 23:45:20,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:20,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:20,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-08-31 23:45:20,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:21,040 INFO L130 PetriNetUnfolder]: 239/467 cut-off events. [2023-08-31 23:45:21,041 INFO L131 PetriNetUnfolder]: For 526/540 co-relation queries the response was YES. [2023-08-31 23:45:21,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 467 events. 239/467 cut-off events. For 526/540 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2208 event pairs, 69 based on Foata normal form. 27/475 useless extension candidates. Maximal degree in co-relation 1362. Up to 356 conditions per place. [2023-08-31 23:45:21,043 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 25 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-31 23:45:21,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 234 flow [2023-08-31 23:45:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:45:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:45:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-08-31 23:45:21,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49822695035460995 [2023-08-31 23:45:21,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-08-31 23:45:21,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-08-31 23:45:21,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:21,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-08-31 23:45:21,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,047 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 132 flow. Second operand 3 states and 281 transitions. [2023-08-31 23:45:21,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 234 flow [2023-08-31 23:45:21,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 223 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:21,049 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 147 flow [2023-08-31 23:45:21,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-08-31 23:45:21,050 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-31 23:45:21,050 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 147 flow [2023-08-31 23:45:21,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:21,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:21,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:45:21,051 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:21,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash -402415203, now seen corresponding path program 1 times [2023-08-31 23:45:21,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224684395] [2023-08-31 23:45:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:21,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:21,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:21,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224684395] [2023-08-31 23:45:21,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224684395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:21,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:21,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:45:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728994192] [2023-08-31 23:45:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:21,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:45:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:45:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:45:21,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-08-31 23:45:21,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:21,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-08-31 23:45:21,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:21,185 INFO L130 PetriNetUnfolder]: 138/301 cut-off events. [2023-08-31 23:45:21,185 INFO L131 PetriNetUnfolder]: For 238/263 co-relation queries the response was YES. [2023-08-31 23:45:21,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 301 events. 138/301 cut-off events. For 238/263 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1342 event pairs, 29 based on Foata normal form. 51/337 useless extension candidates. Maximal degree in co-relation 1033. Up to 129 conditions per place. [2023-08-31 23:45:21,187 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 27 selfloop transitions, 7 changer transitions 4/45 dead transitions. [2023-08-31 23:45:21,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 299 flow [2023-08-31 23:45:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:45:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:45:21,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 374 transitions. [2023-08-31 23:45:21,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2023-08-31 23:45:21,188 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 374 transitions. [2023-08-31 23:45:21,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 374 transitions. [2023-08-31 23:45:21,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:21,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 374 transitions. [2023-08-31 23:45:21,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,190 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,190 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 147 flow. Second operand 4 states and 374 transitions. [2023-08-31 23:45:21,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 299 flow [2023-08-31 23:45:21,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 283 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:21,192 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 175 flow [2023-08-31 23:45:21,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-31 23:45:21,193 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 6 predicate places. [2023-08-31 23:45:21,193 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 175 flow [2023-08-31 23:45:21,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:21,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:21,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:45:21,194 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:21,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:21,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1630249970, now seen corresponding path program 1 times [2023-08-31 23:45:21,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:21,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524675770] [2023-08-31 23:45:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:21,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:21,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524675770] [2023-08-31 23:45:21,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524675770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:21,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:21,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:45:21,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890662855] [2023-08-31 23:45:21,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:21,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:45:21,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:21,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:45:21,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:45:21,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:45:21,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:21,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:45:21,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:21,375 INFO L130 PetriNetUnfolder]: 220/513 cut-off events. [2023-08-31 23:45:21,375 INFO L131 PetriNetUnfolder]: For 808/844 co-relation queries the response was YES. [2023-08-31 23:45:21,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 513 events. 220/513 cut-off events. For 808/844 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2767 event pairs, 51 based on Foata normal form. 16/522 useless extension candidates. Maximal degree in co-relation 1984. Up to 242 conditions per place. [2023-08-31 23:45:21,378 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 38 selfloop transitions, 4 changer transitions 18/65 dead transitions. [2023-08-31 23:45:21,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 491 flow [2023-08-31 23:45:21,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:45:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:45:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-08-31 23:45:21,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2023-08-31 23:45:21,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-08-31 23:45:21,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-08-31 23:45:21,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:21,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-08-31 23:45:21,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,382 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 175 flow. Second operand 5 states and 455 transitions. [2023-08-31 23:45:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 491 flow [2023-08-31 23:45:21,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 65 transitions, 453 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-31 23:45:21,384 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 177 flow [2023-08-31 23:45:21,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-08-31 23:45:21,385 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-31 23:45:21,385 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 177 flow [2023-08-31 23:45:21,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:21,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:21,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:45:21,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:21,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:21,386 INFO L85 PathProgramCache]: Analyzing trace with hash 826135756, now seen corresponding path program 2 times [2023-08-31 23:45:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006377798] [2023-08-31 23:45:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:21,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:21,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:21,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006377798] [2023-08-31 23:45:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006377798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:45:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647419977] [2023-08-31 23:45:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:21,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:45:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:45:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:45:21,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 188 [2023-08-31 23:45:21,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:21,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 188 [2023-08-31 23:45:21,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:21,567 INFO L130 PetriNetUnfolder]: 233/483 cut-off events. [2023-08-31 23:45:21,568 INFO L131 PetriNetUnfolder]: For 741/741 co-relation queries the response was YES. [2023-08-31 23:45:21,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 483 events. 233/483 cut-off events. For 741/741 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2250 event pairs, 31 based on Foata normal form. 8/491 useless extension candidates. Maximal degree in co-relation 1866. Up to 201 conditions per place. [2023-08-31 23:45:21,570 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 36 selfloop transitions, 5 changer transitions 26/67 dead transitions. [2023-08-31 23:45:21,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 67 transitions, 506 flow [2023-08-31 23:45:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:45:21,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:45:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2023-08-31 23:45:21,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46914893617021275 [2023-08-31 23:45:21,572 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2023-08-31 23:45:21,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2023-08-31 23:45:21,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:21,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2023-08-31 23:45:21,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,574 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,574 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 177 flow. Second operand 5 states and 441 transitions. [2023-08-31 23:45:21,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 67 transitions, 506 flow [2023-08-31 23:45:21,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 67 transitions, 493 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:21,577 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 159 flow [2023-08-31 23:45:21,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-08-31 23:45:21,578 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-31 23:45:21,578 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 159 flow [2023-08-31 23:45:21,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:21,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:21,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:45:21,579 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:21,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:21,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1920014828, now seen corresponding path program 3 times [2023-08-31 23:45:21,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:21,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312189624] [2023-08-31 23:45:21,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:21,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:21,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:21,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312189624] [2023-08-31 23:45:21,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312189624] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:21,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:21,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:45:21,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478915893] [2023-08-31 23:45:21,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:21,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:45:21,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:21,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:45:21,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:45:21,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 188 [2023-08-31 23:45:21,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,689 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:21,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 188 [2023-08-31 23:45:21,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:21,720 INFO L130 PetriNetUnfolder]: 32/87 cut-off events. [2023-08-31 23:45:21,720 INFO L131 PetriNetUnfolder]: For 201/231 co-relation queries the response was YES. [2023-08-31 23:45:21,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 87 events. 32/87 cut-off events. For 201/231 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 253 event pairs, 6 based on Foata normal form. 33/117 useless extension candidates. Maximal degree in co-relation 343. Up to 27 conditions per place. [2023-08-31 23:45:21,721 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 17 selfloop transitions, 10 changer transitions 1/33 dead transitions. [2023-08-31 23:45:21,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 33 transitions, 260 flow [2023-08-31 23:45:21,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:45:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:45:21,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-08-31 23:45:21,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4829787234042553 [2023-08-31 23:45:21,723 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-08-31 23:45:21,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-08-31 23:45:21,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:21,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-08-31 23:45:21,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,725 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,725 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 159 flow. Second operand 5 states and 454 transitions. [2023-08-31 23:45:21,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 33 transitions, 260 flow [2023-08-31 23:45:21,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 33 transitions, 209 flow, removed 8 selfloop flow, removed 9 redundant places. [2023-08-31 23:45:21,726 INFO L231 Difference]: Finished difference. Result has 42 places, 26 transitions, 151 flow [2023-08-31 23:45:21,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=26} [2023-08-31 23:45:21,727 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-31 23:45:21,727 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 26 transitions, 151 flow [2023-08-31 23:45:21,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.6) internal successors, (438), 5 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:21,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:21,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:45:21,728 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:21,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash -129814626, now seen corresponding path program 1 times [2023-08-31 23:45:21,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:21,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847363508] [2023-08-31 23:45:21,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:21,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847363508] [2023-08-31 23:45:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847363508] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:45:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730615395] [2023-08-31 23:45:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:21,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:45:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:45:21,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:45:21,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:45:21,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 26 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:21,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:45:21,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:21,867 INFO L130 PetriNetUnfolder]: 49/136 cut-off events. [2023-08-31 23:45:21,867 INFO L131 PetriNetUnfolder]: For 313/313 co-relation queries the response was YES. [2023-08-31 23:45:21,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 540 conditions, 136 events. 49/136 cut-off events. For 313/313 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 474 event pairs, 14 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 531. Up to 80 conditions per place. [2023-08-31 23:45:21,868 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 26 selfloop transitions, 2 changer transitions 17/48 dead transitions. [2023-08-31 23:45:21,868 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 398 flow [2023-08-31 23:45:21,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:45:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:45:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 527 transitions. [2023-08-31 23:45:21,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671985815602837 [2023-08-31 23:45:21,870 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 527 transitions. [2023-08-31 23:45:21,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 527 transitions. [2023-08-31 23:45:21,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:21,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 527 transitions. [2023-08-31 23:45:21,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,873 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,873 INFO L175 Difference]: Start difference. First operand has 42 places, 26 transitions, 151 flow. Second operand 6 states and 527 transitions. [2023-08-31 23:45:21,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 398 flow [2023-08-31 23:45:21,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 334 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-31 23:45:21,874 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 136 flow [2023-08-31 23:45:21,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2023-08-31 23:45:21,875 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-31 23:45:21,875 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 136 flow [2023-08-31 23:45:21,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:45:21,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:21,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:45:21,876 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:45:21,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:45:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash 515272976, now seen corresponding path program 2 times [2023-08-31 23:45:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:45:21,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674543941] [2023-08-31 23:45:21,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:45:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:45:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:45:21,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:45:21,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:45:21,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674543941] [2023-08-31 23:45:21,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674543941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:45:21,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:45:21,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:45:21,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975453486] [2023-08-31 23:45:21,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:45:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:45:21,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:45:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:45:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:45:21,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 188 [2023-08-31 23:45:21,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:21,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:45:21,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 188 [2023-08-31 23:45:21,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:45:22,038 INFO L130 PetriNetUnfolder]: 54/124 cut-off events. [2023-08-31 23:45:22,038 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-08-31 23:45:22,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491 conditions, 124 events. 54/124 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 373 event pairs, 7 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 480. Up to 84 conditions per place. [2023-08-31 23:45:22,039 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-31 23:45:22,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 328 flow [2023-08-31 23:45:22,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:45:22,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:45:22,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 495 transitions. [2023-08-31 23:45:22,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43882978723404253 [2023-08-31 23:45:22,040 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 495 transitions. [2023-08-31 23:45:22,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 495 transitions. [2023-08-31 23:45:22,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:45:22,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 495 transitions. [2023-08-31 23:45:22,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:22,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:22,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:22,043 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 136 flow. Second operand 6 states and 495 transitions. [2023-08-31 23:45:22,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 328 flow [2023-08-31 23:45:22,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 314 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 23:45:22,044 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2023-08-31 23:45:22,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2023-08-31 23:45:22,045 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-31 23:45:22,045 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2023-08-31 23:45:22,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:45:22,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:45:22,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:45:22,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:45:22,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:45:22,049 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:45:22,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:45:22,049 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2023-08-31 23:45:22,051 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:45:22,051 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:45:22,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:45:22 BasicIcfg [2023-08-31 23:45:22,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:45:22,053 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:45:22,053 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:45:22,054 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:45:22,054 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:45:17" (3/4) ... [2023-08-31 23:45:22,055 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:45:22,059 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:45:22,059 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:45:22,059 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:45:22,062 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:45:22,062 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:45:22,062 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:45:22,062 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:45:22,086 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:45:22,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:45:22,087 INFO L158 Benchmark]: Toolchain (without parser) took 5656.07ms. Allocated memory was 71.3MB in the beginning and 142.6MB in the end (delta: 71.3MB). Free memory was 47.7MB in the beginning and 40.1MB in the end (delta: 7.5MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,087 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:22,087 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.62ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 47.4MB in the beginning and 69.1MB in the end (delta: -21.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,088 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.99ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 67.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,088 INFO L158 Benchmark]: Boogie Preprocessor took 21.46ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 65.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,088 INFO L158 Benchmark]: RCFGBuilder took 361.63ms. Allocated memory is still 96.5MB. Free memory was 65.5MB in the beginning and 51.3MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,088 INFO L158 Benchmark]: TraceAbstraction took 4813.43ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 50.5MB in the beginning and 42.2MB in the end (delta: 8.3MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,089 INFO L158 Benchmark]: Witness Printer took 33.31ms. Allocated memory is still 142.6MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:45:22,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 71.3MB. Free memory is still 48.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.62ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 47.4MB in the beginning and 69.1MB in the end (delta: -21.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.99ms. Allocated memory is still 96.5MB. Free memory was 69.1MB in the beginning and 67.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.46ms. Allocated memory is still 96.5MB. Free memory was 67.0MB in the beginning and 65.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.63ms. Allocated memory is still 96.5MB. Free memory was 65.5MB in the beginning and 51.3MB in the end (delta: 14.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4813.43ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 50.5MB in the beginning and 42.2MB in the end (delta: 8.3MB). Peak memory consumption was 54.1MB. Max. memory is 16.1GB. * Witness Printer took 33.31ms. Allocated memory is still 142.6MB. Free memory was 42.2MB in the beginning and 40.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 96 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 5 FixpointIterations, 29 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 1 ChoiceCompositions, 93 TotalNumberOfCompositions, 3100 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1671, independent: 1589, independent conditional: 0, independent unconditional: 1589, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 824, independent: 797, independent conditional: 0, independent unconditional: 797, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1671, independent: 792, independent conditional: 0, independent unconditional: 792, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 824, unknown conditional: 0, unknown unconditional: 824] , Statistics on independence cache: Total cache size (in pairs): 70, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 782]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 118 locations, 11 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: 4.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 405 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 302 mSDsluCounter, 103 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 68 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 981 IncrementalHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 35 mSDtfsCounter, 981 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=7, InterpolantAutomatonStates: 54, 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, 1.1s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 702 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:45:22,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE