./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-atomic/peterson.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-atomic/peterson.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 ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 --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 22:25:13,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 22:25:13,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 22:25:13,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 22:25:13,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 22:25:13,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 22:25:13,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 22:25:13,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 22:25:13,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 22:25:13,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 22:25:13,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 22:25:13,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 22:25:13,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 22:25:13,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 22:25:13,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 22:25:14,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 22:25:14,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 22:25:14,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 22:25:14,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 22:25:14,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 22:25:14,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 22:25:14,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 22:25:14,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 22:25:14,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 22:25:14,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 22:25:14,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 22:25:14,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 22:25:14,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 22:25:14,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 22:25:14,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 22:25:14,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 22:25:14,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 22:25:14,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 22:25:14,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 22:25:14,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 22:25:14,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 22:25:14,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 22:25:14,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 22:25:14,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 22:25:14,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 22:25:14,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 22:25:14,036 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 22:25:14,070 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 22:25:14,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 22:25:14,072 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 22:25:14,072 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 22:25:14,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 22:25:14,073 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 22:25:14,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 22:25:14,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 22:25:14,074 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 22:25:14,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 22:25:14,075 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 22:25:14,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 22:25:14,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 22:25:14,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 22:25:14,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 22:25:14,076 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 22:25:14,076 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 22:25:14,076 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 22:25:14,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 22:25:14,077 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 22:25:14,077 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 22:25:14,077 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 22:25:14,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 22:25:14,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 22:25:14,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 22:25:14,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:25:14,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 22:25:14,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 22:25:14,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 22:25:14,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 22:25:14,079 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 22:25:14,079 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 22:25:14,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 22:25:14,079 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 22:25:14,079 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee3d1a41e169e13d6fb9bc974b1d8f7c8de5421cb2dfbc7e3d9a400662188398 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 22:25:14,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 22:25:14,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 22:25:14,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 22:25:14,417 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 22:25:14,418 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 22:25:14,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-31 22:25:15,523 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 22:25:15,782 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 22:25:15,783 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson.i [2023-08-31 22:25:15,793 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f465679/4ccbd5e81f9c4062b73a7f39e20865e2/FLAG83cf9720b [2023-08-31 22:25:15,808 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26f465679/4ccbd5e81f9c4062b73a7f39e20865e2 [2023-08-31 22:25:15,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 22:25:15,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 22:25:15,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 22:25:15,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 22:25:15,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 22:25:15,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:25:15" (1/1) ... [2023-08-31 22:25:15,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e286faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:15, skipping insertion in model container [2023-08-31 22:25:15,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 10:25:15" (1/1) ... [2023-08-31 22:25:15,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 22:25:15,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 22:25:16,066 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:25:16,211 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-atomic/peterson.i[30997,31010] [2023-08-31 22:25:16,219 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-atomic/peterson.i[31682,31695] [2023-08-31 22:25:16,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:25:16,234 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 22:25:16,257 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 22:25:16,274 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-atomic/peterson.i[30997,31010] [2023-08-31 22:25:16,279 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-atomic/peterson.i[31682,31695] [2023-08-31 22:25:16,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 22:25:16,378 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:25:16,380 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:25:16,380 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 22:25:16,386 INFO L208 MainTranslator]: Completed translation [2023-08-31 22:25:16,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16 WrapperNode [2023-08-31 22:25:16,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 22:25:16,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 22:25:16,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 22:25:16,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 22:25:16,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,447 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-08-31 22:25:16,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 22:25:16,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 22:25:16,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 22:25:16,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 22:25:16,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 22:25:16,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 22:25:16,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 22:25:16,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 22:25:16,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (1/1) ... [2023-08-31 22:25:16,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 22:25:16,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 22:25:16,535 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 22:25:16,545 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 22:25:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 22:25:16,567 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-31 22:25:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-31 22:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 22:25:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 22:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 22:25:16,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 22:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 22:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 22:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 22:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 22:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 22:25:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 22:25:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 22:25:16,571 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 22:25:16,680 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 22:25:16,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 22:25:16,887 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 22:25:16,892 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 22:25:16,893 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-31 22:25:16,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:25:16 BoogieIcfgContainer [2023-08-31 22:25:16,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 22:25:16,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 22:25:16,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 22:25:16,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 22:25:16,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 10:25:15" (1/3) ... [2023-08-31 22:25:16,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3404d4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:25:16, skipping insertion in model container [2023-08-31 22:25:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 10:25:16" (2/3) ... [2023-08-31 22:25:16,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3404d4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 10:25:16, skipping insertion in model container [2023-08-31 22:25:16,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:25:16" (3/3) ... [2023-08-31 22:25:16,904 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson.i [2023-08-31 22:25:16,919 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 22:25:16,919 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 22:25:16,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 22:25:17,006 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 22:25:17,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 196 flow [2023-08-31 22:25:17,121 INFO L130 PetriNetUnfolder]: 6/88 cut-off events. [2023-08-31 22:25:17,121 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:25:17,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 6/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-31 22:25:17,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 90 transitions, 196 flow [2023-08-31 22:25:17,132 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 84 transitions, 180 flow [2023-08-31 22:25:17,136 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 22:25:17,149 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 84 transitions, 180 flow [2023-08-31 22:25:17,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 84 transitions, 180 flow [2023-08-31 22:25:17,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 180 flow [2023-08-31 22:25:17,189 INFO L130 PetriNetUnfolder]: 6/84 cut-off events. [2023-08-31 22:25:17,190 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 22:25:17,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 106 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-31 22:25:17,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 1476 [2023-08-31 22:25:19,242 INFO L134 LiptonReduction]: Checked pairs total: 4653 [2023-08-31 22:25:19,243 INFO L136 LiptonReduction]: Total number of compositions: 67 [2023-08-31 22:25:19,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 22:25:19,261 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;@16ab4c69, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 22:25:19,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-31 22:25:19,263 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 22:25:19,263 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 22:25:19,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:19,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 22:25:19,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:19,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 343, now seen corresponding path program 1 times [2023-08-31 22:25:19,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:19,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888722035] [2023-08-31 22:25:19,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:19,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:19,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:19,363 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 22:25:19,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:19,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888722035] [2023-08-31 22:25:19,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888722035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:19,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:19,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 22:25:19,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615678086] [2023-08-31 22:25:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 22:25:19,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:19,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 22:25:19,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 22:25:19,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-08-31 22:25:19,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:19,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-08-31 22:25:19,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:19,506 INFO L130 PetriNetUnfolder]: 292/538 cut-off events. [2023-08-31 22:25:19,506 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-31 22:25:19,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 538 events. 292/538 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2896 event pairs, 287 based on Foata normal form. 18/308 useless extension candidates. Maximal degree in co-relation 966. Up to 511 conditions per place. [2023-08-31 22:25:19,512 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 26 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2023-08-31 22:25:19,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 136 flow [2023-08-31 22:25:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 22:25:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 22:25:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 193 transitions. [2023-08-31 22:25:19,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6146496815286624 [2023-08-31 22:25:19,525 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 193 transitions. [2023-08-31 22:25:19,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 193 transitions. [2023-08-31 22:25:19,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:19,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 193 transitions. [2023-08-31 22:25:19,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,535 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,537 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 90 flow. Second operand 2 states and 193 transitions. [2023-08-31 22:25:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 136 flow [2023-08-31 22:25:19,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 22:25:19,541 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 76 flow [2023-08-31 22:25:19,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-31 22:25:19,546 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-08-31 22:25:19,546 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 76 flow [2023-08-31 22:25:19,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 82.5) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:19,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 22:25:19,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 22:25:19,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:19,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:19,548 INFO L85 PathProgramCache]: Analyzing trace with hash 338423, now seen corresponding path program 1 times [2023-08-31 22:25:19,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:19,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967112004] [2023-08-31 22:25:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:19,749 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 22:25:19,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:19,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967112004] [2023-08-31 22:25:19,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967112004] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:19,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576214966] [2023-08-31 22:25:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:19,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-08-31 22:25:19,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:19,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-08-31 22:25:19,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:19,858 INFO L130 PetriNetUnfolder]: 281/514 cut-off events. [2023-08-31 22:25:19,858 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 22:25:19,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 514 events. 281/514 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2707 event pairs, 276 based on Foata normal form. 0/283 useless extension candidates. Maximal degree in co-relation 1008. Up to 485 conditions per place. [2023-08-31 22:25:19,864 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 22 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-31 22:25:19,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 120 flow [2023-08-31 22:25:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-31 22:25:19,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456475583864119 [2023-08-31 22:25:19,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-31 22:25:19,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-31 22:25:19,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:19,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-31 22:25:19,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 22:25:19,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:19,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:19,887 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 76 flow. Second operand 3 states and 257 transitions. [2023-08-31 22:25:19,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 120 flow [2023-08-31 22:25:19,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 22:25:19,889 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 76 flow [2023-08-31 22:25:19,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-31 22:25:19,889 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -5 predicate places. [2023-08-31 22:25:19,890 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 76 flow [2023-08-31 22:25:19,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:19,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:19,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 22:25:19,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 22:25:19,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:19,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 338422, now seen corresponding path program 1 times [2023-08-31 22:25:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:19,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373499459] [2023-08-31 22:25:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:19,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:19,944 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 22:25:19,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:19,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373499459] [2023-08-31 22:25:19,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373499459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:19,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:19,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:19,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552121295] [2023-08-31 22:25:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:19,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:19,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:19,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:19,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 157 [2023-08-31 22:25:19,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 22:25:19,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:19,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 157 [2023-08-31 22:25:19,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:20,073 INFO L130 PetriNetUnfolder]: 270/490 cut-off events. [2023-08-31 22:25:20,073 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 22:25:20,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 490 events. 270/490 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2582 event pairs, 265 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 962. Up to 461 conditions per place. [2023-08-31 22:25:20,080 INFO L137 encePairwiseOnDemand]: 153/157 looper letters, 20 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-31 22:25:20,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 116 flow [2023-08-31 22:25:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-31 22:25:20,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159235668789809 [2023-08-31 22:25:20,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-31 22:25:20,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-31 22:25:20,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:20,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-31 22:25:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:20,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,088 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 76 flow. Second operand 3 states and 243 transitions. [2023-08-31 22:25:20,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 116 flow [2023-08-31 22:25:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:20,090 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 72 flow [2023-08-31 22:25:20,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-31 22:25:20,091 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-31 22:25:20,091 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 72 flow [2023-08-31 22:25:20,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 22:25:20,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:20,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:25:20,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 22:25:20,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:20,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash 325230467, now seen corresponding path program 1 times [2023-08-31 22:25:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:20,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067058849] [2023-08-31 22:25:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:20,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:20,237 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 22:25:20,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:20,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067058849] [2023-08-31 22:25:20,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067058849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:20,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:20,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 22:25:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612801567] [2023-08-31 22:25:20,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:20,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:20,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:20,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:20,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-08-31 22:25:20,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 22:25:20,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:20,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-08-31 22:25:20,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:20,315 INFO L130 PetriNetUnfolder]: 199/377 cut-off events. [2023-08-31 22:25:20,315 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 22:25:20,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 377 events. 199/377 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1904 event pairs, 194 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 736. Up to 348 conditions per place. [2023-08-31 22:25:20,317 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 19 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-31 22:25:20,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 112 flow [2023-08-31 22:25:20,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:20,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 253 transitions. [2023-08-31 22:25:20,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371549893842887 [2023-08-31 22:25:20,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 253 transitions. [2023-08-31 22:25:20,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 253 transitions. [2023-08-31 22:25:20,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:20,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 253 transitions. [2023-08-31 22:25:20,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 22:25:20,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,326 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,326 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 72 flow. Second operand 3 states and 253 transitions. [2023-08-31 22:25:20,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 112 flow [2023-08-31 22:25:20,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:20,329 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 70 flow [2023-08-31 22:25:20,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-31 22:25:20,330 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-31 22:25:20,331 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 70 flow [2023-08-31 22:25:20,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 22:25:20,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:20,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 22:25:20,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 22:25:20,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:20,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:20,332 INFO L85 PathProgramCache]: Analyzing trace with hash 325230466, now seen corresponding path program 1 times [2023-08-31 22:25:20,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:20,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140479120] [2023-08-31 22:25:20,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:20,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:20,391 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 22:25:20,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:20,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140479120] [2023-08-31 22:25:20,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140479120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:20,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:20,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:25:20,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711528411] [2023-08-31 22:25:20,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:20,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 22:25:20,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:20,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 22:25:20,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 22:25:20,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 157 [2023-08-31 22:25:20,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 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 22:25:20,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:20,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 157 [2023-08-31 22:25:20,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:20,484 INFO L130 PetriNetUnfolder]: 128/264 cut-off events. [2023-08-31 22:25:20,484 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 22:25:20,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 264 events. 128/264 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1246 event pairs, 123 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 510. Up to 235 conditions per place. [2023-08-31 22:25:20,486 INFO L137 encePairwiseOnDemand]: 154/157 looper letters, 18 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-31 22:25:20,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 108 flow [2023-08-31 22:25:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 228 transitions. [2023-08-31 22:25:20,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840764331210191 [2023-08-31 22:25:20,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 228 transitions. [2023-08-31 22:25:20,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 228 transitions. [2023-08-31 22:25:20,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:20,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 228 transitions. [2023-08-31 22:25:20,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 22:25:20,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,490 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 70 flow. Second operand 3 states and 228 transitions. [2023-08-31 22:25:20,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 108 flow [2023-08-31 22:25:20,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:20,491 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2023-08-31 22:25:20,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-31 22:25:20,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-08-31 22:25:20,493 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2023-08-31 22:25:20,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 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 22:25:20,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:20,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:20,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 22:25:20,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:20,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2099206089, now seen corresponding path program 1 times [2023-08-31 22:25:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:20,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152014007] [2023-08-31 22:25:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:20,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:20,518 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 22:25:20,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:20,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152014007] [2023-08-31 22:25:20,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152014007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:20,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:20,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:25:20,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108496761] [2023-08-31 22:25:20,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:20,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:20,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:20,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-08-31 22:25:20,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 22:25:20,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:20,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-08-31 22:25:20,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:20,580 INFO L130 PetriNetUnfolder]: 158/342 cut-off events. [2023-08-31 22:25:20,580 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 22:25:20,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 342 events. 158/342 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1603 event pairs, 69 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 660. Up to 168 conditions per place. [2023-08-31 22:25:20,582 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 30 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-31 22:25:20,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 42 transitions, 162 flow [2023-08-31 22:25:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:20,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-08-31 22:25:20,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564755838641189 [2023-08-31 22:25:20,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-08-31 22:25:20,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-08-31 22:25:20,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:20,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-08-31 22:25:20,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:25:20,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,587 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 266 transitions. [2023-08-31 22:25:20,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 42 transitions, 162 flow [2023-08-31 22:25:20,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:20,588 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 84 flow [2023-08-31 22:25:20,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-08-31 22:25:20,589 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-31 22:25:20,589 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 84 flow [2023-08-31 22:25:20,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 22:25:20,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:20,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:20,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 22:25:20,590 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:20,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1197105897, now seen corresponding path program 1 times [2023-08-31 22:25:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273974086] [2023-08-31 22:25:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:20,624 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 22:25:20,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:20,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273974086] [2023-08-31 22:25:20,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273974086] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:20,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:20,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 22:25:20,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746396639] [2023-08-31 22:25:20,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:20,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 22:25:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 22:25:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 22:25:20,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-08-31 22:25:20,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:20,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:20,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-08-31 22:25:20,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:20,686 INFO L130 PetriNetUnfolder]: 126/288 cut-off events. [2023-08-31 22:25:20,686 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-31 22:25:20,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 288 events. 126/288 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1320 event pairs, 82 based on Foata normal form. 20/276 useless extension candidates. Maximal degree in co-relation 619. Up to 184 conditions per place. [2023-08-31 22:25:20,688 INFO L137 encePairwiseOnDemand]: 152/157 looper letters, 28 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-31 22:25:20,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 166 flow [2023-08-31 22:25:20,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:20,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-31 22:25:20,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626326963906582 [2023-08-31 22:25:20,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-31 22:25:20,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-31 22:25:20,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:20,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-31 22:25:20,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:20,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:20,692 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 84 flow. Second operand 3 states and 265 transitions. [2023-08-31 22:25:20,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 166 flow [2023-08-31 22:25:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:20,694 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 86 flow [2023-08-31 22:25:20,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-31 22:25:20,695 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-08-31 22:25:20,695 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 86 flow [2023-08-31 22:25:20,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 22:25:20,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:20,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 22:25:20,696 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:20,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:20,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1858584576, now seen corresponding path program 1 times [2023-08-31 22:25:20,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:20,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437019382] [2023-08-31 22:25:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:20,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:20,769 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 22:25:20,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:20,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437019382] [2023-08-31 22:25:20,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437019382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:20,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:20,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 22:25:20,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298100793] [2023-08-31 22:25:20,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:20,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 22:25:20,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 22:25:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 22:25:20,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 157 [2023-08-31 22:25:20,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 22:25:20,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:20,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 157 [2023-08-31 22:25:20,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:21,005 INFO L130 PetriNetUnfolder]: 326/633 cut-off events. [2023-08-31 22:25:21,005 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-31 22:25:21,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 633 events. 326/633 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2990 event pairs, 59 based on Foata normal form. 26/657 useless extension candidates. Maximal degree in co-relation 1345. Up to 247 conditions per place. [2023-08-31 22:25:21,008 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 64 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2023-08-31 22:25:21,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 86 transitions, 389 flow [2023-08-31 22:25:21,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 22:25:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 22:25:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 785 transitions. [2023-08-31 22:25:21,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-31 22:25:21,011 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 785 transitions. [2023-08-31 22:25:21,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 785 transitions. [2023-08-31 22:25:21,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:21,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 785 transitions. [2023-08-31 22:25:21,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.5) internal successors, (785), 10 states have internal predecessors, (785), 0 states have call successors, (0), 0 states 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 22:25:21,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states 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 22:25:21,018 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states 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 22:25:21,018 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 86 flow. Second operand 10 states and 785 transitions. [2023-08-31 22:25:21,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 86 transitions, 389 flow [2023-08-31 22:25:21,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 86 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 22:25:21,022 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 214 flow [2023-08-31 22:25:21,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-08-31 22:25:21,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2023-08-31 22:25:21,026 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 214 flow [2023-08-31 22:25:21,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 22:25:21,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:21,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:21,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 22:25:21,027 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:21,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash 950303248, now seen corresponding path program 2 times [2023-08-31 22:25:21,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:21,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129303595] [2023-08-31 22:25:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:21,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:21,117 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 22:25:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129303595] [2023-08-31 22:25:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129303595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:21,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 22:25:21,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744615665] [2023-08-31 22:25:21,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:21,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 22:25:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 22:25:21,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 22:25:21,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 157 [2023-08-31 22:25:21,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 22:25:21,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:21,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 157 [2023-08-31 22:25:21,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:21,324 INFO L130 PetriNetUnfolder]: 264/539 cut-off events. [2023-08-31 22:25:21,324 INFO L131 PetriNetUnfolder]: For 754/758 co-relation queries the response was YES. [2023-08-31 22:25:21,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1567 conditions, 539 events. 264/539 cut-off events. For 754/758 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2510 event pairs, 38 based on Foata normal form. 18/553 useless extension candidates. Maximal degree in co-relation 1553. Up to 186 conditions per place. [2023-08-31 22:25:21,328 INFO L137 encePairwiseOnDemand]: 148/157 looper letters, 59 selfloop transitions, 19 changer transitions 0/86 dead transitions. [2023-08-31 22:25:21,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 535 flow [2023-08-31 22:25:21,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 22:25:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 22:25:21,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 697 transitions. [2023-08-31 22:25:21,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49327671620665253 [2023-08-31 22:25:21,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 697 transitions. [2023-08-31 22:25:21,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 697 transitions. [2023-08-31 22:25:21,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:21,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 697 transitions. [2023-08-31 22:25:21,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 0 states have call successors, (0), 0 states 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 22:25:21,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states 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 22:25:21,337 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 157.0) internal successors, (1570), 10 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states 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 22:25:21,337 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 214 flow. Second operand 9 states and 697 transitions. [2023-08-31 22:25:21,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 535 flow [2023-08-31 22:25:21,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 503 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-31 22:25:21,347 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 320 flow [2023-08-31 22:25:21,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=320, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-31 22:25:21,349 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-08-31 22:25:21,349 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 320 flow [2023-08-31 22:25:21,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.16666666666667) internal successors, (433), 6 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 22:25:21,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 22:25:21,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:21,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 22:25:21,350 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-31 22:25:21,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 22:25:21,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1796584040, now seen corresponding path program 1 times [2023-08-31 22:25:21,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 22:25:21,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72731867] [2023-08-31 22:25:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 22:25:21,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 22:25:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 22:25:21,703 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 22:25:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 22:25:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72731867] [2023-08-31 22:25:21,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72731867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 22:25:21,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 22:25:21,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 22:25:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330942169] [2023-08-31 22:25:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 22:25:21,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 22:25:21,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 22:25:21,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 22:25:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-31 22:25:21,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 157 [2023-08-31 22:25:21,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 22:25:21,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 22:25:21,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 157 [2023-08-31 22:25:21,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 22:25:22,015 INFO L130 PetriNetUnfolder]: 290/559 cut-off events. [2023-08-31 22:25:22,017 INFO L131 PetriNetUnfolder]: For 1070/1088 co-relation queries the response was YES. [2023-08-31 22:25:22,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1959 conditions, 559 events. 290/559 cut-off events. For 1070/1088 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2558 event pairs, 164 based on Foata normal form. 2/541 useless extension candidates. Maximal degree in co-relation 1939. Up to 493 conditions per place. [2023-08-31 22:25:22,019 INFO L137 encePairwiseOnDemand]: 155/157 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-08-31 22:25:22,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 412 flow [2023-08-31 22:25:22,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 22:25:22,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 22:25:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-31 22:25:22,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4564755838641189 [2023-08-31 22:25:22,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-31 22:25:22,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-31 22:25:22,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 22:25:22,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-31 22:25:22,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 22:25:22,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:22,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states 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 22:25:22,023 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 320 flow. Second operand 3 states and 215 transitions. [2023-08-31 22:25:22,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 412 flow [2023-08-31 22:25:22,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 403 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 22:25:22,031 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-08-31 22:25:22,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-08-31 22:25:22,033 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-08-31 22:25:22,033 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-08-31 22:25:22,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.85714285714286) internal successors, (468), 7 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 22:25:22,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2023-08-31 22:25:22,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2023-08-31 22:25:22,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-08-31 22:25:22,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-08-31 22:25:22,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-08-31 22:25:22,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-08-31 22:25:22,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-08-31 22:25:22,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-08-31 22:25:22,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-08-31 22:25:22,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-08-31 22:25:22,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2023-08-31 22:25:22,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2023-08-31 22:25:22,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-08-31 22:25:22,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2023-08-31 22:25:22,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2023-08-31 22:25:22,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 22:25:22,041 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 22:25:22,045 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 22:25:22,045 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 22:25:22,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 10:25:22 BasicIcfg [2023-08-31 22:25:22,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 22:25:22,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 22:25:22,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 22:25:22,055 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 22:25:22,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 10:25:16" (3/4) ... [2023-08-31 22:25:22,058 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 22:25:22,062 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-08-31 22:25:22,063 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-08-31 22:25:22,065 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-31 22:25:22,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 22:25:22,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 22:25:22,066 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 22:25:22,088 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 22:25:22,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 22:25:22,089 INFO L158 Benchmark]: Toolchain (without parser) took 6266.28ms. Allocated memory was 73.4MB in the beginning and 144.7MB in the end (delta: 71.3MB). Free memory was 49.7MB in the beginning and 72.9MB in the end (delta: -23.2MB). Peak memory consumption was 49.2MB. Max. memory is 16.1GB. [2023-08-31 22:25:22,089 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 73.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:25:22,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.83ms. Allocated memory is still 73.4MB. Free memory was 49.5MB in the beginning and 47.9MB in the end (delta: 1.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-31 22:25:22,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.29ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 46.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:25:22,090 INFO L158 Benchmark]: Boogie Preprocessor took 51.40ms. Allocated memory is still 73.4MB. Free memory was 46.0MB in the beginning and 44.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 22:25:22,091 INFO L158 Benchmark]: RCFGBuilder took 394.21ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 44.4MB in the beginning and 76.0MB in the end (delta: -31.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-31 22:25:22,091 INFO L158 Benchmark]: TraceAbstraction took 5157.62ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 75.5MB in the beginning and 75.0MB in the end (delta: 558.0kB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. [2023-08-31 22:25:22,091 INFO L158 Benchmark]: Witness Printer took 33.71ms. Allocated memory is still 144.7MB. Free memory was 75.0MB in the beginning and 72.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 22:25:22,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 73.4MB. Free memory is still 50.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.83ms. Allocated memory is still 73.4MB. Free memory was 49.5MB in the beginning and 47.9MB in the end (delta: 1.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.29ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 46.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.40ms. Allocated memory is still 73.4MB. Free memory was 46.0MB in the beginning and 44.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 394.21ms. Allocated memory was 73.4MB in the beginning and 98.6MB in the end (delta: 25.2MB). Free memory was 44.4MB in the beginning and 76.0MB in the end (delta: -31.6MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5157.62ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 75.5MB in the beginning and 75.0MB in the end (delta: 558.0kB). Peak memory consumption was 69.2MB. Max. memory is 16.1GB. * Witness Printer took 33.71ms. Allocated memory is still 144.7MB. Free memory was 75.0MB in the beginning and 72.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 85 PlacesBefore, 43 PlacesAfterwards, 84 TransitionsBefore, 39 TransitionsAfterwards, 1476 CoEnabledTransitionPairs, 5 FixpointIterations, 34 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 67 TotalNumberOfCompositions, 4653 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2255, independent: 2071, independent conditional: 0, independent unconditional: 2071, dependent: 184, dependent conditional: 0, dependent unconditional: 184, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 730, independent: 701, independent conditional: 0, independent unconditional: 701, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2255, independent: 1370, independent conditional: 0, independent unconditional: 1370, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 730, unknown conditional: 0, unknown unconditional: 730] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 154, Positive conditional cache size: 0, Positive unconditional cache size: 154, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 753]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 725]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - 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: 759]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 locations, 15 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: 5.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 695 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 449 mSDsluCounter, 177 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1301 IncrementalHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 101 mSDtfsCounter, 1301 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred in iteration=9, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 598 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 22:25:22,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE