./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/read_write_lock-1.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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 02:24:02,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:24:02,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:24:02,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:24:02,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:24:02,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:24:02,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:24:02,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:24:02,304 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:24:02,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:24:02,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:24:02,310 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:24:02,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:24:02,313 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:24:02,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:24:02,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:24:02,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:24:02,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:24:02,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:24:02,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:24:02,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:24:02,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:24:02,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:24:02,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:24:02,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:24:02,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:24:02,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:24:02,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:24:02,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:24:02,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:24:02,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:24:02,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:24:02,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:24:02,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:24:02,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:24:02,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:24:02,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:24:02,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:24:02,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:24:02,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:24:02,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:24:02,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:24:02,367 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:24:02,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:24:02,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:24:02,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:24:02,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:24:02,369 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:24:02,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:24:02,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:24:02,370 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:24:02,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:24:02,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:24:02,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:24:02,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:24:02,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:24:02,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:24:02,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:24:02,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:24:02,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:24:02,373 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:24:02,373 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:24:02,374 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:24:02,374 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:24:02,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:24:02,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:24:02,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:24:02,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:24:02,604 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:24:02,604 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:24:02,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-30 02:24:03,501 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:24:03,694 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:24:03,700 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-08-30 02:24:03,710 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0e6e37f/60261fa469454a46b1fc02418a5260dd/FLAGfb945b223 [2023-08-30 02:24:03,720 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf0e6e37f/60261fa469454a46b1fc02418a5260dd [2023-08-30 02:24:03,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:24:03,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:24:03,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:24:03,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:24:03,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:24:03,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:24:03" (1/1) ... [2023-08-30 02:24:03,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e6ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:03, skipping insertion in model container [2023-08-30 02:24:03,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:24:03" (1/1) ... [2023-08-30 02:24:03,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:24:03,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:24:03,858 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 02:24:03,967 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/read_write_lock-1.i[31246,31259] [2023-08-30 02:24:03,978 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:24:03,987 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:24:04,008 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 02:24:04,018 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/read_write_lock-1.i[31246,31259] [2023-08-30 02:24:04,032 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:24:04,058 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:24:04,058 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:24:04,058 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:24:04,068 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:24:04,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04 WrapperNode [2023-08-30 02:24:04,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:24:04,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:24:04,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:24:04,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:24:04,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,121 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2023-08-30 02:24:04,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:24:04,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:24:04,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:24:04,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:24:04,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,157 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:24:04,166 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:24:04,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:24:04,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:24:04,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (1/1) ... [2023-08-30 02:24:04,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:24:04,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:24:04,198 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) [2023-08-30 02:24:04,216 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 [2023-08-30 02:24:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 02:24:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:24:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:24:04,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:24:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-08-30 02:24:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-08-30 02:24:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:24:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:24:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:24:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:24:04,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:24:04,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:24:04,229 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-08-30 02:24:04,229 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-08-30 02:24:04,230 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 02:24:04,377 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:24:04,379 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:24:04,576 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:24:04,595 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:24:04,598 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 02:24:04,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:24:04 BoogieIcfgContainer [2023-08-30 02:24:04,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:24:04,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:24:04,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:24:04,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:24:04,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:24:03" (1/3) ... [2023-08-30 02:24:04,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a9555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:24:04, skipping insertion in model container [2023-08-30 02:24:04,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:24:04" (2/3) ... [2023-08-30 02:24:04,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a9555f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:24:04, skipping insertion in model container [2023-08-30 02:24:04,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:24:04" (3/3) ... [2023-08-30 02:24:04,606 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-08-30 02:24:04,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:24:04,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 02:24:04,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:24:04,701 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 02:24:04,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 288 flow [2023-08-30 02:24:04,816 INFO L130 PetriNetUnfolder]: 2/124 cut-off events. [2023-08-30 02:24:04,816 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 02:24:04,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 2/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-30 02:24:04,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 128 transitions, 288 flow [2023-08-30 02:24:04,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 120 transitions, 264 flow [2023-08-30 02:24:04,827 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:24:04,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 120 transitions, 264 flow [2023-08-30 02:24:04,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 120 transitions, 264 flow [2023-08-30 02:24:04,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 120 transitions, 264 flow [2023-08-30 02:24:04,856 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2023-08-30 02:24:04,856 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 02:24:04,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 120 events. 2/120 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-08-30 02:24:04,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 3048 [2023-08-30 02:24:07,924 INFO L134 LiptonReduction]: Checked pairs total: 10807 [2023-08-30 02:24:07,924 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 02:24:07,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:24:07,938 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;@7ac158f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:24:07,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-30 02:24:07,939 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 02:24:07,939 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:24:07,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:07,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 02:24:07,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:07,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:07,943 INFO L85 PathProgramCache]: Analyzing trace with hash 437, now seen corresponding path program 1 times [2023-08-30 02:24:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:07,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234811128] [2023-08-30 02:24:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234811128] [2023-08-30 02:24:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234811128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:08,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 02:24:08,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896656753] [2023-08-30 02:24:08,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:08,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:24:08,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:24:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:24:08,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 229 [2023-08-30 02:24:08,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 138 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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) [2023-08-30 02:24:08,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:08,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 229 [2023-08-30 02:24:08,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:08,610 INFO L130 PetriNetUnfolder]: 5285/7977 cut-off events. [2023-08-30 02:24:08,610 INFO L131 PetriNetUnfolder]: For 337/337 co-relation queries the response was YES. [2023-08-30 02:24:08,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15680 conditions, 7977 events. 5285/7977 cut-off events. For 337/337 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 54392 event pairs, 5285 based on Foata normal form. 640/6095 useless extension candidates. Maximal degree in co-relation 12203. Up to 7413 conditions per place. [2023-08-30 02:24:08,648 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 45 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-08-30 02:24:08,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 53 transitions, 220 flow [2023-08-30 02:24:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:24:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:24:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 273 transitions. [2023-08-30 02:24:08,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5960698689956332 [2023-08-30 02:24:08,658 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 273 transitions. [2023-08-30 02:24:08,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 273 transitions. [2023-08-30 02:24:08,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:08,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 273 transitions. [2023-08-30 02:24:08,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 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) [2023-08-30 02:24:08,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2023-08-30 02:24:08,665 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2023-08-30 02:24:08,666 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 138 flow. Second operand 2 states and 273 transitions. [2023-08-30 02:24:08,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 53 transitions, 220 flow [2023-08-30 02:24:08,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 204 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 02:24:08,672 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 114 flow [2023-08-30 02:24:08,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-08-30 02:24:08,676 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-30 02:24:08,677 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 114 flow [2023-08-30 02:24:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 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) [2023-08-30 02:24:08,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:08,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:24:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:24:08,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:08,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:08,687 INFO L85 PathProgramCache]: Analyzing trace with hash 431598, now seen corresponding path program 1 times [2023-08-30 02:24:08,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587660909] [2023-08-30 02:24:08,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:08,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:08,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:08,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:08,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587660909] [2023-08-30 02:24:08,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587660909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:08,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:08,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:08,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877391587] [2023-08-30 02:24:08,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:08,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:08,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:09,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-30 02:24:09,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-08-30 02:24:09,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:09,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-30 02:24:09,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:09,459 INFO L130 PetriNetUnfolder]: 5031/7612 cut-off events. [2023-08-30 02:24:09,459 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 02:24:09,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14738 conditions, 7612 events. 5031/7612 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 51601 event pairs, 5031 based on Foata normal form. 0/5292 useless extension candidates. Maximal degree in co-relation 14735. Up to 7046 conditions per place. [2023-08-30 02:24:09,493 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-30 02:24:09,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 196 flow [2023-08-30 02:24:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:09,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-08-30 02:24:09,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065502183406113 [2023-08-30 02:24:09,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-08-30 02:24:09,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-08-30 02:24:09,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:09,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-08-30 02:24:09,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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) [2023-08-30 02:24:09,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:09,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:09,501 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 114 flow. Second operand 3 states and 348 transitions. [2023-08-30 02:24:09,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 196 flow [2023-08-30 02:24:09,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 196 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:09,503 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 114 flow [2023-08-30 02:24:09,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2023-08-30 02:24:09,504 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-30 02:24:09,504 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 114 flow [2023-08-30 02:24:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 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) [2023-08-30 02:24:09,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:09,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 02:24:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:24:09,505 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:09,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:09,507 INFO L85 PathProgramCache]: Analyzing trace with hash 431596, now seen corresponding path program 1 times [2023-08-30 02:24:09,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:09,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860808131] [2023-08-30 02:24:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:09,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:09,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:09,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860808131] [2023-08-30 02:24:09,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860808131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:09,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:09,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:09,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454984605] [2023-08-30 02:24:09,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:09,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:09,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:09,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:09,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-30 02:24:09,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-08-30 02:24:09,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:09,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-30 02:24:09,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:10,067 INFO L130 PetriNetUnfolder]: 4777/7247 cut-off events. [2023-08-30 02:24:10,068 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 02:24:10,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14011 conditions, 7247 events. 4777/7247 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 48713 event pairs, 4777 based on Foata normal form. 0/5129 useless extension candidates. Maximal degree in co-relation 14007. Up to 6681 conditions per place. [2023-08-30 02:24:10,093 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 39 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 02:24:10,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 192 flow [2023-08-30 02:24:10,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:10,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:10,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 364 transitions. [2023-08-30 02:24:10,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529839883551674 [2023-08-30 02:24:10,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 364 transitions. [2023-08-30 02:24:10,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 364 transitions. [2023-08-30 02:24:10,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:10,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 364 transitions. [2023-08-30 02:24:10,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 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) [2023-08-30 02:24:10,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:10,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:10,098 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 114 flow. Second operand 3 states and 364 transitions. [2023-08-30 02:24:10,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 192 flow [2023-08-30 02:24:10,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:10,099 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 110 flow [2023-08-30 02:24:10,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-30 02:24:10,100 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-08-30 02:24:10,100 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 110 flow [2023-08-30 02:24:10,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 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) [2023-08-30 02:24:10,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:10,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:24:10,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:24:10,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:10,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash 414774320, now seen corresponding path program 1 times [2023-08-30 02:24:10,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:10,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882383711] [2023-08-30 02:24:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:10,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:10,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882383711] [2023-08-30 02:24:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882383711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:10,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:10,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:10,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076650214] [2023-08-30 02:24:10,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:10,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:10,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:10,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:10,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-30 02:24:10,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2023-08-30 02:24:10,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:10,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-30 02:24:10,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:10,617 INFO L130 PetriNetUnfolder]: 4723/7157 cut-off events. [2023-08-30 02:24:10,617 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 02:24:10,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13831 conditions, 7157 events. 4723/7157 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 48160 event pairs, 4723 based on Foata normal form. 0/5090 useless extension candidates. Maximal degree in co-relation 13827. Up to 6591 conditions per place. [2023-08-30 02:24:10,642 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 37 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-30 02:24:10,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 184 flow [2023-08-30 02:24:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-30 02:24:10,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5269286754002911 [2023-08-30 02:24:10,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-30 02:24:10,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-30 02:24:10,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:10,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-30 02:24:10,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2023-08-30 02:24:10,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:10,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:10,647 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 110 flow. Second operand 3 states and 362 transitions. [2023-08-30 02:24:10,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 184 flow [2023-08-30 02:24:10,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:10,648 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 106 flow [2023-08-30 02:24:10,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-30 02:24:10,649 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-30 02:24:10,649 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 106 flow [2023-08-30 02:24:10,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 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) [2023-08-30 02:24:10,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:10,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:24:10,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:24:10,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:10,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:10,650 INFO L85 PathProgramCache]: Analyzing trace with hash 414774319, now seen corresponding path program 1 times [2023-08-30 02:24:10,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:10,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610809187] [2023-08-30 02:24:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:10,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:10,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:10,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610809187] [2023-08-30 02:24:10,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610809187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:10,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531498253] [2023-08-30 02:24:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:10,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:10,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:10,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-30 02:24:10,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2023-08-30 02:24:10,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:10,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-30 02:24:10,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:11,023 INFO L130 PetriNetUnfolder]: 4669/7067 cut-off events. [2023-08-30 02:24:11,023 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 02:24:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13651 conditions, 7067 events. 4669/7067 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 47485 event pairs, 4669 based on Foata normal form. 0/5051 useless extension candidates. Maximal degree in co-relation 13647. Up to 6501 conditions per place. [2023-08-30 02:24:11,046 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 35 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-30 02:24:11,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 176 flow [2023-08-30 02:24:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:11,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:11,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-30 02:24:11,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978165938864629 [2023-08-30 02:24:11,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-30 02:24:11,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-30 02:24:11,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:11,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-30 02:24:11,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 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) [2023-08-30 02:24:11,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:11,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:11,051 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 106 flow. Second operand 3 states and 342 transitions. [2023-08-30 02:24:11,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 176 flow [2023-08-30 02:24:11,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:11,052 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 102 flow [2023-08-30 02:24:11,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-08-30 02:24:11,053 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2023-08-30 02:24:11,053 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 102 flow [2023-08-30 02:24:11,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 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) [2023-08-30 02:24:11,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:11,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:11,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:24:11,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:11,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:11,054 INFO L85 PathProgramCache]: Analyzing trace with hash -833829137, now seen corresponding path program 1 times [2023-08-30 02:24:11,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:11,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890250560] [2023-08-30 02:24:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:11,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:11,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:11,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:11,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890250560] [2023-08-30 02:24:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890250560] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:11,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:11,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751920179] [2023-08-30 02:24:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:11,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:11,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:11,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 229 [2023-08-30 02:24:11,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-08-30 02:24:11,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:11,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 229 [2023-08-30 02:24:11,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:11,451 INFO L130 PetriNetUnfolder]: 4547/6885 cut-off events. [2023-08-30 02:24:11,451 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 02:24:11,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13287 conditions, 6885 events. 4547/6885 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 46127 event pairs, 4547 based on Foata normal form. 0/4967 useless extension candidates. Maximal degree in co-relation 13283. Up to 6319 conditions per place. [2023-08-30 02:24:11,478 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 33 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-30 02:24:11,479 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 168 flow [2023-08-30 02:24:11,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:11,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:11,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-30 02:24:11,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4949053857350801 [2023-08-30 02:24:11,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-30 02:24:11,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-30 02:24:11,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:11,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-30 02:24:11,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 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) [2023-08-30 02:24:11,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:11,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:11,483 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 102 flow. Second operand 3 states and 340 transitions. [2023-08-30 02:24:11,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 168 flow [2023-08-30 02:24:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:11,484 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 98 flow [2023-08-30 02:24:11,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-08-30 02:24:11,485 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -17 predicate places. [2023-08-30 02:24:11,485 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 98 flow [2023-08-30 02:24:11,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 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) [2023-08-30 02:24:11,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:11,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:24:11,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:11,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:11,486 INFO L85 PathProgramCache]: Analyzing trace with hash -833829138, now seen corresponding path program 1 times [2023-08-30 02:24:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667641636] [2023-08-30 02:24:11,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:11,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:11,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:11,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667641636] [2023-08-30 02:24:11,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667641636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:11,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:11,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:11,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771886753] [2023-08-30 02:24:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:11,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:11,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:11,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-30 02:24:11,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2023-08-30 02:24:11,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:11,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-30 02:24:11,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:11,894 INFO L130 PetriNetUnfolder]: 4425/6703 cut-off events. [2023-08-30 02:24:11,894 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2023-08-30 02:24:11,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12923 conditions, 6703 events. 4425/6703 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 44918 event pairs, 4425 based on Foata normal form. 0/4883 useless extension candidates. Maximal degree in co-relation 12919. Up to 6137 conditions per place. [2023-08-30 02:24:11,913 INFO L137 encePairwiseOnDemand]: 225/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-08-30 02:24:11,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 160 flow [2023-08-30 02:24:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:11,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-30 02:24:11,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181950509461426 [2023-08-30 02:24:11,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-30 02:24:11,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-30 02:24:11,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:11,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-30 02:24:11,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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) [2023-08-30 02:24:11,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:11,917 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:11,917 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 98 flow. Second operand 3 states and 356 transitions. [2023-08-30 02:24:11,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 160 flow [2023-08-30 02:24:11,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:11,918 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 94 flow [2023-08-30 02:24:11,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-08-30 02:24:11,918 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -19 predicate places. [2023-08-30 02:24:11,918 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 94 flow [2023-08-30 02:24:11,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2023-08-30 02:24:11,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:11,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:11,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:24:11,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:11,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1816247104, now seen corresponding path program 1 times [2023-08-30 02:24:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:11,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243676660] [2023-08-30 02:24:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:11,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243676660] [2023-08-30 02:24:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243676660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:11,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104640899] [2023-08-30 02:24:11,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:11,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-30 02:24:11,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:11,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:11,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-30 02:24:11,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:13,309 INFO L130 PetriNetUnfolder]: 28373/39568 cut-off events. [2023-08-30 02:24:13,309 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-08-30 02:24:13,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78606 conditions, 39568 events. 28373/39568 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 250767 event pairs, 4391 based on Foata normal form. 0/30696 useless extension candidates. Maximal degree in co-relation 78602. Up to 17007 conditions per place. [2023-08-30 02:24:13,485 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 163 selfloop transitions, 22 changer transitions 0/187 dead transitions. [2023-08-30 02:24:13,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 187 transitions, 787 flow [2023-08-30 02:24:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:24:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:24:13,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1013 transitions. [2023-08-30 02:24:13,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529475982532751 [2023-08-30 02:24:13,488 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1013 transitions. [2023-08-30 02:24:13,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1013 transitions. [2023-08-30 02:24:13,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:13,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1013 transitions. [2023-08-30 02:24:13,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 126.625) internal successors, (1013), 8 states have internal predecessors, (1013), 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) [2023-08-30 02:24:13,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:13,492 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:13,492 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 94 flow. Second operand 8 states and 1013 transitions. [2023-08-30 02:24:13,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 187 transitions, 787 flow [2023-08-30 02:24:13,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 187 transitions, 777 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:13,494 INFO L231 Difference]: Finished difference. Result has 60 places, 61 transitions, 241 flow [2023-08-30 02:24:13,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=60, PETRI_TRANSITIONS=61} [2023-08-30 02:24:13,495 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-30 02:24:13,495 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 61 transitions, 241 flow [2023-08-30 02:24:13,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.8) internal successors, (524), 5 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:13,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:13,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:13,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:24:13,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:13,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1849091405, now seen corresponding path program 1 times [2023-08-30 02:24:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518595415] [2023-08-30 02:24:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:13,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:13,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518595415] [2023-08-30 02:24:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518595415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:13,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:13,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:13,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780862293] [2023-08-30 02:24:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:13,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:24:13,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:24:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:24:13,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-30 02:24:13,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 61 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:13,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:13,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-30 02:24:13,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:14,486 INFO L130 PetriNetUnfolder]: 12754/19358 cut-off events. [2023-08-30 02:24:14,486 INFO L131 PetriNetUnfolder]: For 7964/9859 co-relation queries the response was YES. [2023-08-30 02:24:14,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44851 conditions, 19358 events. 12754/19358 cut-off events. For 7964/9859 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 142012 event pairs, 11712 based on Foata normal form. 460/14945 useless extension candidates. Maximal degree in co-relation 44842. Up to 17795 conditions per place. [2023-08-30 02:24:14,552 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 32 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-08-30 02:24:14,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 307 flow [2023-08-30 02:24:14,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-30 02:24:14,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366812227074236 [2023-08-30 02:24:14,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-30 02:24:14,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-30 02:24:14,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:14,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-30 02:24:14,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 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) [2023-08-30 02:24:14,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:14,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:14,555 INFO L175 Difference]: Start difference. First operand has 60 places, 61 transitions, 241 flow. Second operand 3 states and 300 transitions. [2023-08-30 02:24:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 307 flow [2023-08-30 02:24:14,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:14,580 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 243 flow [2023-08-30 02:24:14,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-08-30 02:24:14,581 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-30 02:24:14,581 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 243 flow [2023-08-30 02:24:14,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.5) internal successors, (543), 6 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:14,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:14,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:24:14,581 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:14,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:14,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1849091407, now seen corresponding path program 1 times [2023-08-30 02:24:14,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:14,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489037303] [2023-08-30 02:24:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:14,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489037303] [2023-08-30 02:24:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489037303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:14,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:14,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:24:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829423278] [2023-08-30 02:24:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:14,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 229 [2023-08-30 02:24:14,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-08-30 02:24:14,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:14,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 229 [2023-08-30 02:24:14,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:15,425 INFO L130 PetriNetUnfolder]: 8966/13834 cut-off events. [2023-08-30 02:24:15,426 INFO L131 PetriNetUnfolder]: For 5863/7245 co-relation queries the response was YES. [2023-08-30 02:24:15,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32207 conditions, 13834 events. 8966/13834 cut-off events. For 5863/7245 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 99326 event pairs, 8197 based on Foata normal form. 341/11529 useless extension candidates. Maximal degree in co-relation 32197. Up to 12764 conditions per place. [2023-08-30 02:24:15,491 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 31 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-30 02:24:15,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 307 flow [2023-08-30 02:24:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2023-08-30 02:24:15,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138282387190685 [2023-08-30 02:24:15,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2023-08-30 02:24:15,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2023-08-30 02:24:15,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:15,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2023-08-30 02:24:15,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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) [2023-08-30 02:24:15,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:15,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:15,496 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 243 flow. Second operand 3 states and 353 transitions. [2023-08-30 02:24:15,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 307 flow [2023-08-30 02:24:15,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:15,513 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 241 flow [2023-08-30 02:24:15,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-08-30 02:24:15,514 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-30 02:24:15,514 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 241 flow [2023-08-30 02:24:15,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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) [2023-08-30 02:24:15,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:15,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:15,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:24:15,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:15,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:15,515 INFO L85 PathProgramCache]: Analyzing trace with hash -561888545, now seen corresponding path program 1 times [2023-08-30 02:24:15,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:15,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816578952] [2023-08-30 02:24:15,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:15,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816578952] [2023-08-30 02:24:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816578952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:24:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403681339] [2023-08-30 02:24:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:15,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:24:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:15,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:24:15,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:24:15,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 229 [2023-08-30 02:24:15,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 241 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-30 02:24:15,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:15,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 229 [2023-08-30 02:24:15,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:16,205 INFO L130 PetriNetUnfolder]: 6791/10945 cut-off events. [2023-08-30 02:24:16,206 INFO L131 PetriNetUnfolder]: For 4763/5283 co-relation queries the response was YES. [2023-08-30 02:24:16,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25785 conditions, 10945 events. 6791/10945 cut-off events. For 4763/5283 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 80744 event pairs, 2413 based on Foata normal form. 1195/10039 useless extension candidates. Maximal degree in co-relation 25775. Up to 5154 conditions per place. [2023-08-30 02:24:16,252 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 50 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-30 02:24:16,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 415 flow [2023-08-30 02:24:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:24:16,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:24:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2023-08-30 02:24:16,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5545851528384279 [2023-08-30 02:24:16,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2023-08-30 02:24:16,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2023-08-30 02:24:16,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:16,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2023-08-30 02:24:16,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2023-08-30 02:24:16,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:16,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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) [2023-08-30 02:24:16,257 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 241 flow. Second operand 3 states and 381 transitions. [2023-08-30 02:24:16,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 415 flow [2023-08-30 02:24:16,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:16,276 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 253 flow [2023-08-30 02:24:16,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-30 02:24:16,277 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-30 02:24:16,277 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 253 flow [2023-08-30 02:24:16,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 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) [2023-08-30 02:24:16,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:16,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:16,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 02:24:16,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:16,278 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:16,278 INFO L85 PathProgramCache]: Analyzing trace with hash 52814657, now seen corresponding path program 2 times [2023-08-30 02:24:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:16,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880306917] [2023-08-30 02:24:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:16,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:16,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880306917] [2023-08-30 02:24:16,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880306917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:16,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:16,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:24:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508172774] [2023-08-30 02:24:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:16,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:24:16,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:24:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:24:16,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 229 [2023-08-30 02:24:16,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2023-08-30 02:24:16,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:16,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 229 [2023-08-30 02:24:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:16,637 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 72#L748-4true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,637 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 72#L748-4true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,637 INFO L383 tUnfolder$Statistics]: this new event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,637 INFO L386 tUnfolder$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-08-30 02:24:16,729 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), 49#L749-1true, Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,730 INFO L383 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), 69#writerEXITtrue, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), 49#L749-1true, Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,730 INFO L383 tUnfolder$Statistics]: this new event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,730 INFO L386 tUnfolder$Statistics]: existing Event has 23 ancestors and is cut-off event [2023-08-30 02:24:16,816 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, 123#L749-2true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,817 INFO L383 tUnfolder$Statistics]: this new event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,817 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,817 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,817 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,817 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, 123#L749-2true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,817 INFO L383 tUnfolder$Statistics]: this new event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,818 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,818 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,818 INFO L386 tUnfolder$Statistics]: existing Event has 24 ancestors and is cut-off event [2023-08-30 02:24:16,898 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([327] L735-->L739: Formula: (and (not (= |v_readerThread1of1ForFork0_~lx~0#1_9| |v_readerThread1of1ForFork0_~ly~0#1_9|)) (= |v_readerThread1of1ForFork0_~lx~0#1_9| v_~x~0_9)) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, ~x~0=v_~x~0_9} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_9|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_9|, ~x~0=v_~x~0_9} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][99], [120#L732true, 205#(= ~r~0 0), 16#writerEXITtrue, Black: 200#(= ~w~0 1), 125#L750-1true, 15#L739true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,899 INFO L383 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([376] L735-->readerErr0ASSERT_VIOLATIONMEMORY_LEAK: Formula: (and (= v_~x~0_15 |v_readerThread1of1ForFork0_~lx~0#1_13|) (not (= |v_readerThread1of1ForFork0_~ly~0#1_13| |v_readerThread1of1ForFork0_~lx~0#1_13|))) InVars {readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, ~x~0=v_~x~0_15} OutVars{readerThread1of1ForFork0_~ly~0#1=|v_readerThread1of1ForFork0_~ly~0#1_13|, readerThread1of1ForFork0_~lx~0#1=|v_readerThread1of1ForFork0_~lx~0#1_13|, ~x~0=v_~x~0_15} AuxVars[] AssignedVars[readerThread1of1ForFork0_~lx~0#1][100], [120#L732true, 205#(= ~r~0 0), 37#readerErr0ASSERT_VIOLATIONMEMORY_LEAKtrue, 16#writerEXITtrue, Black: 200#(= ~w~0 1), 125#L750-1true, Black: 171#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 177#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 179#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 172#(= ~y~0 ~x~0), 169#true, Black: 175#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 198#true, 142#true]) [2023-08-30 02:24:16,899 INFO L383 tUnfolder$Statistics]: this new event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-30 02:24:16,899 INFO L386 tUnfolder$Statistics]: existing Event has 25 ancestors and is cut-off event [2023-08-30 02:24:17,098 INFO L130 PetriNetUnfolder]: 7695/12816 cut-off events. [2023-08-30 02:24:17,099 INFO L131 PetriNetUnfolder]: For 10298/10929 co-relation queries the response was YES. [2023-08-30 02:24:17,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33745 conditions, 12816 events. 7695/12816 cut-off events. For 10298/10929 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 102848 event pairs, 1408 based on Foata normal form. 651/10948 useless extension candidates. Maximal degree in co-relation 33734. Up to 3555 conditions per place. [2023-08-30 02:24:17,155 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 91 selfloop transitions, 19 changer transitions 0/136 dead transitions. [2023-08-30 02:24:17,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 136 transitions, 727 flow [2023-08-30 02:24:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:24:17,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:24:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2023-08-30 02:24:17,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5624454148471616 [2023-08-30 02:24:17,165 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2023-08-30 02:24:17,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2023-08-30 02:24:17,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:17,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2023-08-30 02:24:17,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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) [2023-08-30 02:24:17,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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) [2023-08-30 02:24:17,168 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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) [2023-08-30 02:24:17,168 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 253 flow. Second operand 5 states and 644 transitions. [2023-08-30 02:24:17,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 136 transitions, 727 flow [2023-08-30 02:24:17,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 136 transitions, 707 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:17,207 INFO L231 Difference]: Finished difference. Result has 63 places, 75 transitions, 341 flow [2023-08-30 02:24:17,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=63, PETRI_TRANSITIONS=75} [2023-08-30 02:24:17,208 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-08-30 02:24:17,208 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 75 transitions, 341 flow [2023-08-30 02:24:17,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 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) [2023-08-30 02:24:17,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:17,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:17,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 02:24:17,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:17,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash 65619719, now seen corresponding path program 1 times [2023-08-30 02:24:17,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:17,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366719233] [2023-08-30 02:24:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:17,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:17,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366719233] [2023-08-30 02:24:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366719233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:17,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:17,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091360815] [2023-08-30 02:24:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:17,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-30 02:24:17,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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) [2023-08-30 02:24:17,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:17,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-30 02:24:17,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:19,099 INFO L130 PetriNetUnfolder]: 23339/36324 cut-off events. [2023-08-30 02:24:19,099 INFO L131 PetriNetUnfolder]: For 33473/34386 co-relation queries the response was YES. [2023-08-30 02:24:19,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106735 conditions, 36324 events. 23339/36324 cut-off events. For 33473/34386 co-relation queries the response was YES. Maximal size of possible extension queue 2256. Compared 283976 event pairs, 4899 based on Foata normal form. 913/33984 useless extension candidates. Maximal degree in co-relation 106724. Up to 16312 conditions per place. [2023-08-30 02:24:19,312 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 233 selfloop transitions, 68 changer transitions 1/306 dead transitions. [2023-08-30 02:24:19,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 306 transitions, 1975 flow [2023-08-30 02:24:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:24:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:24:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 990 transitions. [2023-08-30 02:24:19,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403930131004366 [2023-08-30 02:24:19,316 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 990 transitions. [2023-08-30 02:24:19,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 990 transitions. [2023-08-30 02:24:19,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:19,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 990 transitions. [2023-08-30 02:24:19,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.75) internal successors, (990), 8 states have internal predecessors, (990), 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) [2023-08-30 02:24:19,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:19,322 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:19,322 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 341 flow. Second operand 8 states and 990 transitions. [2023-08-30 02:24:19,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 306 transitions, 1975 flow [2023-08-30 02:24:19,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 306 transitions, 1967 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:19,511 INFO L231 Difference]: Finished difference. Result has 76 places, 139 transitions, 984 flow [2023-08-30 02:24:19,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=984, PETRI_PLACES=76, PETRI_TRANSITIONS=139} [2023-08-30 02:24:19,512 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2023-08-30 02:24:19,512 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 139 transitions, 984 flow [2023-08-30 02:24:19,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.6) internal successors, (528), 5 states have internal predecessors, (528), 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) [2023-08-30 02:24:19,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:19,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 02:24:19,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:19,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1046930815, now seen corresponding path program 1 times [2023-08-30 02:24:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:19,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446986559] [2023-08-30 02:24:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:19,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:19,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:19,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446986559] [2023-08-30 02:24:19,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446986559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:19,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:19,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:19,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880923741] [2023-08-30 02:24:19,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:19,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:19,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:19,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 229 [2023-08-30 02:24:19,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 139 transitions, 984 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 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) [2023-08-30 02:24:19,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:19,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 229 [2023-08-30 02:24:19,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:20,098 INFO L130 PetriNetUnfolder]: 2278/4677 cut-off events. [2023-08-30 02:24:20,098 INFO L131 PetriNetUnfolder]: For 7419/7691 co-relation queries the response was YES. [2023-08-30 02:24:20,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15164 conditions, 4677 events. 2278/4677 cut-off events. For 7419/7691 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 36671 event pairs, 286 based on Foata normal form. 401/4853 useless extension candidates. Maximal degree in co-relation 15147. Up to 1072 conditions per place. [2023-08-30 02:24:20,118 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 100 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2023-08-30 02:24:20,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 171 transitions, 1142 flow [2023-08-30 02:24:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 02:24:20,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 02:24:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2023-08-30 02:24:20,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509461426491994 [2023-08-30 02:24:20,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 757 transitions. [2023-08-30 02:24:20,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 757 transitions. [2023-08-30 02:24:20,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:20,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 757 transitions. [2023-08-30 02:24:20,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 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) [2023-08-30 02:24:20,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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) [2023-08-30 02:24:20,123 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 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) [2023-08-30 02:24:20,123 INFO L175 Difference]: Start difference. First operand has 76 places, 139 transitions, 984 flow. Second operand 6 states and 757 transitions. [2023-08-30 02:24:20,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 171 transitions, 1142 flow [2023-08-30 02:24:20,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 171 transitions, 1126 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-30 02:24:20,138 INFO L231 Difference]: Finished difference. Result has 82 places, 103 transitions, 686 flow [2023-08-30 02:24:20,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=686, PETRI_PLACES=82, PETRI_TRANSITIONS=103} [2023-08-30 02:24:20,138 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-08-30 02:24:20,138 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 103 transitions, 686 flow [2023-08-30 02:24:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 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) [2023-08-30 02:24:20,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:20,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:20,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 02:24:20,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:20,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:20,139 INFO L85 PathProgramCache]: Analyzing trace with hash 197897927, now seen corresponding path program 1 times [2023-08-30 02:24:20,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:20,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16986134] [2023-08-30 02:24:20,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:20,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:20,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:20,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16986134] [2023-08-30 02:24:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16986134] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:20,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331987716] [2023-08-30 02:24:20,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:20,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:20,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-30 02:24:20,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 103 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-08-30 02:24:20,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:20,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-30 02:24:20,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:20,647 INFO L130 PetriNetUnfolder]: 3111/5750 cut-off events. [2023-08-30 02:24:20,648 INFO L131 PetriNetUnfolder]: For 10973/11039 co-relation queries the response was YES. [2023-08-30 02:24:20,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21112 conditions, 5750 events. 3111/5750 cut-off events. For 10973/11039 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40090 event pairs, 469 based on Foata normal form. 112/5707 useless extension candidates. Maximal degree in co-relation 21093. Up to 2333 conditions per place. [2023-08-30 02:24:20,671 INFO L137 encePairwiseOnDemand]: 219/229 looper letters, 175 selfloop transitions, 47 changer transitions 4/230 dead transitions. [2023-08-30 02:24:20,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 230 transitions, 1777 flow [2023-08-30 02:24:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:24:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:24:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 980 transitions. [2023-08-30 02:24:20,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349344978165939 [2023-08-30 02:24:20,674 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 980 transitions. [2023-08-30 02:24:20,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 980 transitions. [2023-08-30 02:24:20,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:20,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 980 transitions. [2023-08-30 02:24:20,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.5) internal successors, (980), 8 states have internal predecessors, (980), 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) [2023-08-30 02:24:20,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:20,678 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:20,678 INFO L175 Difference]: Start difference. First operand has 82 places, 103 transitions, 686 flow. Second operand 8 states and 980 transitions. [2023-08-30 02:24:20,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 230 transitions, 1777 flow [2023-08-30 02:24:20,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 230 transitions, 1712 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:24:20,703 INFO L231 Difference]: Finished difference. Result has 90 places, 114 transitions, 900 flow [2023-08-30 02:24:20,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=900, PETRI_PLACES=90, PETRI_TRANSITIONS=114} [2023-08-30 02:24:20,704 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 22 predicate places. [2023-08-30 02:24:20,704 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 114 transitions, 900 flow [2023-08-30 02:24:20,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-08-30 02:24:20,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:20,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:20,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 02:24:20,705 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:20,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash 958119990, now seen corresponding path program 1 times [2023-08-30 02:24:20,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929918815] [2023-08-30 02:24:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:20,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:20,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:20,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929918815] [2023-08-30 02:24:20,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929918815] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:20,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:20,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:20,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452671354] [2023-08-30 02:24:20,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:20,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:20,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:20,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:20,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:20,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 229 [2023-08-30 02:24:20,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 114 transitions, 900 flow. Second operand has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-08-30 02:24:20,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:20,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 229 [2023-08-30 02:24:20,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:21,347 INFO L130 PetriNetUnfolder]: 2842/5289 cut-off events. [2023-08-30 02:24:21,347 INFO L131 PetriNetUnfolder]: For 13723/13852 co-relation queries the response was YES. [2023-08-30 02:24:21,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20068 conditions, 5289 events. 2842/5289 cut-off events. For 13723/13852 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36213 event pairs, 379 based on Foata normal form. 177/5431 useless extension candidates. Maximal degree in co-relation 20045. Up to 2165 conditions per place. [2023-08-30 02:24:21,370 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 178 selfloop transitions, 56 changer transitions 0/240 dead transitions. [2023-08-30 02:24:21,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 240 transitions, 1971 flow [2023-08-30 02:24:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 02:24:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 02:24:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 977 transitions. [2023-08-30 02:24:21,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5332969432314411 [2023-08-30 02:24:21,377 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 977 transitions. [2023-08-30 02:24:21,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 977 transitions. [2023-08-30 02:24:21,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:21,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 977 transitions. [2023-08-30 02:24:21,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.125) internal successors, (977), 8 states have internal predecessors, (977), 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) [2023-08-30 02:24:21,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:21,381 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 229.0) internal successors, (2061), 9 states have internal predecessors, (2061), 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) [2023-08-30 02:24:21,381 INFO L175 Difference]: Start difference. First operand has 90 places, 114 transitions, 900 flow. Second operand 8 states and 977 transitions. [2023-08-30 02:24:21,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 240 transitions, 1971 flow [2023-08-30 02:24:21,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 240 transitions, 1962 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 02:24:21,415 INFO L231 Difference]: Finished difference. Result has 97 places, 127 transitions, 1180 flow [2023-08-30 02:24:21,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1180, PETRI_PLACES=97, PETRI_TRANSITIONS=127} [2023-08-30 02:24:21,415 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 29 predicate places. [2023-08-30 02:24:21,415 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 127 transitions, 1180 flow [2023-08-30 02:24:21,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 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) [2023-08-30 02:24:21,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:21,416 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] [2023-08-30 02:24:21,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 02:24:21,416 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:21,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash -757095109, now seen corresponding path program 1 times [2023-08-30 02:24:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695657220] [2023-08-30 02:24:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:21,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:21,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:21,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:21,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695657220] [2023-08-30 02:24:21,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695657220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:21,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:21,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 02:24:21,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186317797] [2023-08-30 02:24:21,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:21,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 02:24:21,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 02:24:21,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 02:24:21,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 229 [2023-08-30 02:24:21,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 127 transitions, 1180 flow. Second operand has 6 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 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) [2023-08-30 02:24:21,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:21,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 229 [2023-08-30 02:24:21,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:21,906 INFO L130 PetriNetUnfolder]: 1729/3936 cut-off events. [2023-08-30 02:24:21,906 INFO L131 PetriNetUnfolder]: For 11492/11729 co-relation queries the response was YES. [2023-08-30 02:24:21,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15297 conditions, 3936 events. 1729/3936 cut-off events. For 11492/11729 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31631 event pairs, 184 based on Foata normal form. 313/4214 useless extension candidates. Maximal degree in co-relation 15270. Up to 679 conditions per place. [2023-08-30 02:24:21,924 INFO L137 encePairwiseOnDemand]: 220/229 looper letters, 99 selfloop transitions, 23 changer transitions 0/188 dead transitions. [2023-08-30 02:24:21,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 188 transitions, 1597 flow [2023-08-30 02:24:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:24:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:24:21,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 860 transitions. [2023-08-30 02:24:21,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5364940736119775 [2023-08-30 02:24:21,928 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 860 transitions. [2023-08-30 02:24:21,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 860 transitions. [2023-08-30 02:24:21,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:21,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 860 transitions. [2023-08-30 02:24:21,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.85714285714286) internal successors, (860), 7 states have internal predecessors, (860), 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) [2023-08-30 02:24:21,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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) [2023-08-30 02:24:21,931 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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) [2023-08-30 02:24:21,931 INFO L175 Difference]: Start difference. First operand has 97 places, 127 transitions, 1180 flow. Second operand 7 states and 860 transitions. [2023-08-30 02:24:21,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 188 transitions, 1597 flow [2023-08-30 02:24:21,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 188 transitions, 1588 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 02:24:21,973 INFO L231 Difference]: Finished difference. Result has 103 places, 121 transitions, 1123 flow [2023-08-30 02:24:21,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1123, PETRI_PLACES=103, PETRI_TRANSITIONS=121} [2023-08-30 02:24:21,974 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 35 predicate places. [2023-08-30 02:24:21,974 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 121 transitions, 1123 flow [2023-08-30 02:24:21,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.33333333333333) internal successors, (662), 6 states have internal predecessors, (662), 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) [2023-08-30 02:24:21,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:21,974 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] [2023-08-30 02:24:21,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 02:24:21,975 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting readerErr0ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:21,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:21,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1672700721, now seen corresponding path program 2 times [2023-08-30 02:24:21,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:21,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606802916] [2023-08-30 02:24:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:21,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:22,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:22,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606802916] [2023-08-30 02:24:22,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606802916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:22,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:22,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 02:24:22,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748090172] [2023-08-30 02:24:22,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:22,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 02:24:22,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 02:24:22,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 02:24:22,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 229 [2023-08-30 02:24:22,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 121 transitions, 1123 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:22,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 229 [2023-08-30 02:24:22,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:22,229 INFO L130 PetriNetUnfolder]: 892/2242 cut-off events. [2023-08-30 02:24:22,229 INFO L131 PetriNetUnfolder]: For 8853/9005 co-relation queries the response was YES. [2023-08-30 02:24:22,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9542 conditions, 2242 events. 892/2242 cut-off events. For 8853/9005 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 16895 event pairs, 150 based on Foata normal form. 148/2362 useless extension candidates. Maximal degree in co-relation 9513. Up to 676 conditions per place. [2023-08-30 02:24:22,239 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 69 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2023-08-30 02:24:22,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 120 transitions, 982 flow [2023-08-30 02:24:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 02:24:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 02:24:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-08-30 02:24:22,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493449781659389 [2023-08-30 02:24:22,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-08-30 02:24:22,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-08-30 02:24:22,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:22,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-08-30 02:24:22,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 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) [2023-08-30 02:24:22,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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) [2023-08-30 02:24:22,244 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 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) [2023-08-30 02:24:22,244 INFO L175 Difference]: Start difference. First operand has 103 places, 121 transitions, 1123 flow. Second operand 5 states and 629 transitions. [2023-08-30 02:24:22,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 120 transitions, 982 flow [2023-08-30 02:24:22,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 816 flow, removed 14 selfloop flow, removed 18 redundant places. [2023-08-30 02:24:22,266 INFO L231 Difference]: Finished difference. Result has 83 places, 81 transitions, 563 flow [2023-08-30 02:24:22,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=83, PETRI_TRANSITIONS=81} [2023-08-30 02:24:22,267 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-08-30 02:24:22,267 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 81 transitions, 563 flow [2023-08-30 02:24:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:24:22,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:24:22,267 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:22,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 02:24:22,268 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [readerErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 21 more)] === [2023-08-30 02:24:22,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:24:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1553266787, now seen corresponding path program 1 times [2023-08-30 02:24:22,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:24:22,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148854448] [2023-08-30 02:24:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:24:22,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:24:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:24:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:24:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:24:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148854448] [2023-08-30 02:24:23,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148854448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:24:23,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:24:23,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 02:24:23,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656094376] [2023-08-30 02:24:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:24:23,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 02:24:23,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:24:23,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 02:24:23,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 02:24:24,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 229 [2023-08-30 02:24:24,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 81 transitions, 563 flow. Second operand has 10 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 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) [2023-08-30 02:24:24,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:24:24,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 229 [2023-08-30 02:24:24,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:24:25,205 INFO L130 PetriNetUnfolder]: 907/2092 cut-off events. [2023-08-30 02:24:25,205 INFO L131 PetriNetUnfolder]: For 4470/4602 co-relation queries the response was YES. [2023-08-30 02:24:25,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7709 conditions, 2092 events. 907/2092 cut-off events. For 4470/4602 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15009 event pairs, 491 based on Foata normal form. 57/2072 useless extension candidates. Maximal degree in co-relation 7691. Up to 1636 conditions per place. [2023-08-30 02:24:25,212 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2023-08-30 02:24:25,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 97 transitions, 779 flow [2023-08-30 02:24:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 02:24:25,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 02:24:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 664 transitions. [2023-08-30 02:24:25,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41422333125389893 [2023-08-30 02:24:25,214 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 664 transitions. [2023-08-30 02:24:25,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 664 transitions. [2023-08-30 02:24:25,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:24:25,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 664 transitions. [2023-08-30 02:24:25,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 94.85714285714286) internal successors, (664), 7 states have internal predecessors, (664), 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) [2023-08-30 02:24:25,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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) [2023-08-30 02:24:25,217 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 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) [2023-08-30 02:24:25,217 INFO L175 Difference]: Start difference. First operand has 83 places, 81 transitions, 563 flow. Second operand 7 states and 664 transitions. [2023-08-30 02:24:25,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 97 transitions, 779 flow [2023-08-30 02:24:25,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 97 transitions, 755 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 02:24:25,224 INFO L231 Difference]: Finished difference. Result has 87 places, 0 transitions, 0 flow [2023-08-30 02:24:25,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=87, PETRI_TRANSITIONS=0} [2023-08-30 02:24:25,226 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 19 predicate places. [2023-08-30 02:24:25,226 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 0 transitions, 0 flow [2023-08-30 02:24:25,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.7) internal successors, (917), 10 states have internal predecessors, (917), 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) [2023-08-30 02:24:25,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (23 of 24 remaining) [2023-08-30 02:24:25,228 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 24 remaining) [2023-08-30 02:24:25,229 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (6 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 24 remaining) [2023-08-30 02:24:25,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 24 remaining) [2023-08-30 02:24:25,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 24 remaining) [2023-08-30 02:24:25,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 02:24:25,231 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:24:25,235 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 02:24:25,235 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 02:24:25,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 02:24:25 BasicIcfg [2023-08-30 02:24:25,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 02:24:25,237 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 02:24:25,237 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 02:24:25,237 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 02:24:25,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:24:04" (3/4) ... [2023-08-30 02:24:25,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 02:24:25,242 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2023-08-30 02:24:25,242 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2023-08-30 02:24:25,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-08-30 02:24:25,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 02:24:25,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 02:24:25,245 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 02:24:25,264 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 02:24:25,264 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 02:24:25,265 INFO L158 Benchmark]: Toolchain (without parser) took 21542.16ms. Allocated memory was 79.7MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 55.8MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 953.2MB. Max. memory is 16.1GB. [2023-08-30 02:24:25,265 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:24:25,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.80ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 57.8MB in the end (delta: -2.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-08-30 02:24:25,265 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.10ms. Allocated memory is still 79.7MB. Free memory was 57.8MB in the beginning and 55.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 02:24:25,265 INFO L158 Benchmark]: Boogie Preprocessor took 43.03ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 54.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 02:24:25,265 INFO L158 Benchmark]: RCFGBuilder took 434.44ms. Allocated memory is still 79.7MB. Free memory was 54.1MB in the beginning and 35.8MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 02:24:25,266 INFO L158 Benchmark]: TraceAbstraction took 20634.87ms. Allocated memory was 79.7MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 35.2MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 927.2MB. Max. memory is 16.1GB. [2023-08-30 02:24:25,266 INFO L158 Benchmark]: Witness Printer took 27.41ms. Allocated memory is still 2.8GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 02:24:25,267 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 56.6MB. Free memory is still 34.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.80ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 57.8MB in the end (delta: -2.0MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.10ms. Allocated memory is still 79.7MB. Free memory was 57.8MB in the beginning and 55.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.03ms. Allocated memory is still 79.7MB. Free memory was 55.5MB in the beginning and 54.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 434.44ms. Allocated memory is still 79.7MB. Free memory was 54.1MB in the beginning and 35.8MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20634.87ms. Allocated memory was 79.7MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 35.2MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 927.2MB. Max. memory is 16.1GB. * Witness Printer took 27.41ms. Allocated memory is still 2.8GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 131 PlacesBefore, 68 PlacesAfterwards, 120 TransitionsBefore, 57 TransitionsAfterwards, 3048 CoEnabledTransitionPairs, 5 FixpointIterations, 38 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 101 TotalNumberOfCompositions, 10807 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4506, independent: 4275, independent conditional: 0, independent unconditional: 4275, dependent: 231, dependent conditional: 0, dependent unconditional: 231, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1554, independent: 1519, independent conditional: 0, independent unconditional: 1519, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4506, independent: 2756, independent conditional: 0, independent unconditional: 2756, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 1554, unknown conditional: 0, unknown unconditional: 1554] , Statistics on independence cache: Total cache size (in pairs): 300, Positive cache size: 279, Positive conditional cache size: 0, Positive unconditional cache size: 279, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 739]: 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: -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: 743]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 locations, 24 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: 20.5s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2311 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1717 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 192 mSDsCounter, 193 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4483 IncrementalHoareTripleChecker+Invalid, 4676 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 193 mSolverCounterUnsat, 174 mSDtfsCounter, 4483 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1180occurred in iteration=16, InterpolantAutomatonStates: 91, 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, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 199 ConstructedInterpolants, 0 QuantifiedInterpolants, 2532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 02:24:25,279 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