./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.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-ext/45_monabsex1_vs.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 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --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 02:38:29,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 02:38:29,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 02:38:29,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 02:38:29,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 02:38:29,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 02:38:29,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 02:38:29,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 02:38:29,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 02:38:29,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 02:38:29,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 02:38:29,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 02:38:29,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 02:38:29,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 02:38:29,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 02:38:29,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 02:38:29,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 02:38:29,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 02:38:29,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 02:38:29,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 02:38:29,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 02:38:29,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 02:38:29,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 02:38:29,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 02:38:29,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 02:38:29,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 02:38:29,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 02:38:29,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 02:38:29,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 02:38:29,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 02:38:29,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 02:38:29,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 02:38:29,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 02:38:29,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 02:38:29,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 02:38:29,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 02:38:29,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 02:38:29,569 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 02:38:29,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 02:38:29,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 02:38:29,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 02:38:29,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 02:38:29,605 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 02:38:29,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 02:38:29,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 02:38:29,607 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 02:38:29,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 02:38:29,608 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 02:38:29,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 02:38:29,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 02:38:29,609 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 02:38:29,609 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 02:38:29,610 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 02:38:29,610 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 02:38:29,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 02:38:29,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 02:38:29,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 02:38:29,611 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 02:38:29,611 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 02:38:29,611 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 02:38:29,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 02:38:29,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 02:38:29,611 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 02:38:29,612 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 02:38:29,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 02:38:29,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 02:38:29,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 02:38:29,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:38:29,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 02:38:29,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 02:38:29,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 02:38:29,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 02:38:29,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 02:38:29,614 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 02:38:29,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 02:38:29,614 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 02:38:29,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 02:38:29,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 02:38:29,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 02:38:29,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 02:38:29,912 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 02:38:29,916 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 02:38:29,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-30 02:38:31,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 02:38:31,417 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 02:38:31,418 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-30 02:38:31,429 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201668a4d/62633b0b6c414d31b7d06daa3be320ee/FLAG07d715750 [2023-08-30 02:38:31,443 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/201668a4d/62633b0b6c414d31b7d06daa3be320ee [2023-08-30 02:38:31,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 02:38:31,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 02:38:31,448 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 02:38:31,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 02:38:31,451 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 02:38:31,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7064f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31, skipping insertion in model container [2023-08-30 02:38:31,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 02:38:31,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 02:38:31,629 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 02:38:31,768 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-ext/45_monabsex1_vs.i[30633,30646] [2023-08-30 02:38:31,777 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:38:31,786 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 02:38:31,810 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 02:38:31,827 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-ext/45_monabsex1_vs.i[30633,30646] [2023-08-30 02:38:31,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 02:38:31,867 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:38:31,867 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:38:31,867 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 02:38:31,873 INFO L208 MainTranslator]: Completed translation [2023-08-30 02:38:31,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31 WrapperNode [2023-08-30 02:38:31,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 02:38:31,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 02:38:31,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 02:38:31,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 02:38:31,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,960 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2023-08-30 02:38:31,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 02:38:31,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 02:38:31,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 02:38:31,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 02:38:31,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:31,996 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:32,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:32,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 02:38:32,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 02:38:32,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 02:38:32,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 02:38:32,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (1/1) ... [2023-08-30 02:38:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 02:38:32,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 02:38:32,037 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 02:38:32,062 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 02:38:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-30 02:38:32,073 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-30 02:38:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 02:38:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 02:38:32,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 02:38:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 02:38:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 02:38:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 02:38:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 02:38:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 02:38:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 02:38:32,075 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 02:38:32,241 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 02:38:32,243 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 02:38:32,340 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 02:38:32,352 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 02:38:32,353 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 02:38:32,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:38:32 BoogieIcfgContainer [2023-08-30 02:38:32,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 02:38:32,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 02:38:32,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 02:38:32,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 02:38:32,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 02:38:31" (1/3) ... [2023-08-30 02:38:32,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1488ef89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:38:32, skipping insertion in model container [2023-08-30 02:38:32,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 02:38:31" (2/3) ... [2023-08-30 02:38:32,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1488ef89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 02:38:32, skipping insertion in model container [2023-08-30 02:38:32,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 02:38:32" (3/3) ... [2023-08-30 02:38:32,363 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-08-30 02:38:32,377 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 02:38:32,377 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-30 02:38:32,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 02:38:32,413 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:38:32,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 97 flow [2023-08-30 02:38:32,500 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2023-08-30 02:38:32,501 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:32,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2023-08-30 02:38:32,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 46 transitions, 97 flow [2023-08-30 02:38:32,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 46 transitions, 97 flow [2023-08-30 02:38:32,513 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:38:32,530 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 48 places, 46 transitions, 97 flow [2023-08-30 02:38:32,539 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 48 places, 46 transitions, 97 flow [2023-08-30 02:38:32,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 97 flow [2023-08-30 02:38:32,574 INFO L130 PetriNetUnfolder]: 2/61 cut-off events. [2023-08-30 02:38:32,575 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:32,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 61 events. 2/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 31. Up to 4 conditions per place. [2023-08-30 02:38:32,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-08-30 02:38:33,825 INFO L134 LiptonReduction]: Checked pairs total: 368 [2023-08-30 02:38:33,825 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-30 02:38:33,837 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:38:33,842 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:38:33,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-30 02:38:33,844 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:38:33,844 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:33,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:33,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:33,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:38:33,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:33,850 INFO L85 PathProgramCache]: Analyzing trace with hash 6417, now seen corresponding path program 1 times [2023-08-30 02:38:33,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:33,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817093471] [2023-08-30 02:38:33,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:33,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:34,020 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 02:38:34,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:34,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817093471] [2023-08-30 02:38:34,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817093471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:34,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:34,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:34,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337866595] [2023-08-30 02:38:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:34,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:34,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:34,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:34,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:34,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2023-08-30 02:38:34,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 14 places, 11 transitions, 27 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 02:38:34,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:34,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2023-08-30 02:38:34,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:34,103 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-08-30 02:38:34,103 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:34,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 16 events. 3/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 3 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 20. Up to 14 conditions per place. [2023-08-30 02:38:34,105 INFO L137 encePairwiseOnDemand]: 87/92 looper letters, 5 selfloop transitions, 1 changer transitions 0/7 dead transitions. [2023-08-30 02:38:34,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 12 places, 7 transitions, 31 flow [2023-08-30 02:38:34,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:34,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-08-30 02:38:34,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-30 02:38:34,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-08-30 02:38:34,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-08-30 02:38:34,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:34,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-08-30 02:38:34,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 02:38:34,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 02:38:34,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 02:38:34,126 INFO L175 Difference]: Start difference. First operand has 14 places, 11 transitions, 27 flow. Second operand 3 states and 115 transitions. [2023-08-30 02:38:34,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 12 places, 7 transitions, 31 flow [2023-08-30 02:38:34,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 31 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:34,130 INFO L231 Difference]: Finished difference. Result has 12 places, 7 transitions, 21 flow [2023-08-30 02:38:34,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=21, PETRI_PLACES=12, PETRI_TRANSITIONS=7} [2023-08-30 02:38:34,134 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2023-08-30 02:38:34,134 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 7 transitions, 21 flow [2023-08-30 02:38:34,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 02:38:34,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:34,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:34,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 02:38:34,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:38:34,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:34,136 INFO L85 PathProgramCache]: Analyzing trace with hash 6419, now seen corresponding path program 1 times [2023-08-30 02:38:34,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:34,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568597108] [2023-08-30 02:38:34,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:34,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:34,230 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 02:38:34,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:34,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568597108] [2023-08-30 02:38:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568597108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:34,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:34,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:34,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520636916] [2023-08-30 02:38:34,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:34,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:34,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-08-30 02:38:34,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 7 transitions, 21 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 02:38:34,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:34,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-08-30 02:38:34,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:34,264 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-08-30 02:38:34,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:34,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 2 based on Foata normal form. 0/12 useless extension candidates. Maximal degree in co-relation 24. Up to 10 conditions per place. [2023-08-30 02:38:34,264 INFO L137 encePairwiseOnDemand]: 90/92 looper letters, 4 selfloop transitions, 1 changer transitions 0/6 dead transitions. [2023-08-30 02:38:34,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 6 transitions, 29 flow [2023-08-30 02:38:34,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:34,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2023-08-30 02:38:34,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42391304347826086 [2023-08-30 02:38:34,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 117 transitions. [2023-08-30 02:38:34,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 117 transitions. [2023-08-30 02:38:34,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:34,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 117 transitions. [2023-08-30 02:38:34,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 02:38:34,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 02:38:34,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 02:38:34,270 INFO L175 Difference]: Start difference. First operand has 12 places, 7 transitions, 21 flow. Second operand 3 states and 117 transitions. [2023-08-30 02:38:34,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 6 transitions, 29 flow [2023-08-30 02:38:34,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 6 transitions, 28 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:34,270 INFO L231 Difference]: Finished difference. Result has 12 places, 6 transitions, 20 flow [2023-08-30 02:38:34,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=20, PETRI_PLACES=12, PETRI_TRANSITIONS=6} [2023-08-30 02:38:34,271 INFO L281 CegarLoopForPetriNet]: 14 programPoint places, -2 predicate places. [2023-08-30 02:38:34,271 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 6 transitions, 20 flow [2023-08-30 02:38:34,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 02:38:34,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:34,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-30 02:38:34,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 02:38:34,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-08-30 02:38:34,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1636058662, now seen corresponding path program 1 times [2023-08-30 02:38:34,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:34,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563575090] [2023-08-30 02:38:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:34,288 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:38:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:34,308 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:38:34,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:38:34,310 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-30 02:38:34,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2023-08-30 02:38:34,311 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 6 remaining) [2023-08-30 02:38:34,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 6 remaining) [2023-08-30 02:38:34,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2023-08-30 02:38:34,312 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2023-08-30 02:38:34,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 02:38:34,313 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-30 02:38:34,314 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:38:34,315 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-30 02:38:34,329 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:38:34,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 128 flow [2023-08-30 02:38:34,355 INFO L130 PetriNetUnfolder]: 3/90 cut-off events. [2023-08-30 02:38:34,355 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:38:34,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 3/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2023-08-30 02:38:34,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 128 flow [2023-08-30 02:38:34,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 128 flow [2023-08-30 02:38:34,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:38:34,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 128 flow [2023-08-30 02:38:34,359 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 128 flow [2023-08-30 02:38:34,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 128 flow [2023-08-30 02:38:34,373 INFO L130 PetriNetUnfolder]: 3/90 cut-off events. [2023-08-30 02:38:34,373 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 02:38:34,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 3/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 62. Up to 6 conditions per place. [2023-08-30 02:38:34,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 1056 [2023-08-30 02:38:35,440 INFO L134 LiptonReduction]: Checked pairs total: 1367 [2023-08-30 02:38:35,440 INFO L136 LiptonReduction]: Total number of compositions: 48 [2023-08-30 02:38:35,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:38:35,443 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:38:35,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-30 02:38:35,444 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:38:35,444 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:35,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:35,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,452 INFO L85 PathProgramCache]: Analyzing trace with hash 10193, now seen corresponding path program 1 times [2023-08-30 02:38:35,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099283376] [2023-08-30 02:38:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:35,490 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 02:38:35,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:35,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099283376] [2023-08-30 02:38:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099283376] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:35,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:35,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:35,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877981872] [2023-08-30 02:38:35,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:35,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:35,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-08-30 02:38:35,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 02:38:35,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:35,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-08-30 02:38:35,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:35,537 INFO L130 PetriNetUnfolder]: 66/143 cut-off events. [2023-08-30 02:38:35,537 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 02:38:35,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 143 events. 66/143 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 626 event pairs, 66 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 84. Up to 129 conditions per place. [2023-08-30 02:38:35,539 INFO L137 encePairwiseOnDemand]: 102/106 looper letters, 10 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-30 02:38:35,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 62 flow [2023-08-30 02:38:35,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-08-30 02:38:35,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-08-30 02:38:35,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:35,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 02:38:35,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,544 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 46 flow. Second operand 3 states and 146 transitions. [2023-08-30 02:38:35,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 62 flow [2023-08-30 02:38:35,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 60 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:35,545 INFO L231 Difference]: Finished difference. Result has 21 places, 14 transitions, 40 flow [2023-08-30 02:38:35,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=14} [2023-08-30 02:38:35,546 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-08-30 02:38:35,546 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 14 transitions, 40 flow [2023-08-30 02:38:35,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 02:38:35,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:35,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 02:38:35,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash 10195, now seen corresponding path program 1 times [2023-08-30 02:38:35,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382945065] [2023-08-30 02:38:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:35,587 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 02:38:35,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:35,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382945065] [2023-08-30 02:38:35,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382945065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:35,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:35,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098256892] [2023-08-30 02:38:35,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:35,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:35,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:35,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:35,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 106 [2023-08-30 02:38:35,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 02:38:35,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:35,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 106 [2023-08-30 02:38:35,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:35,622 INFO L130 PetriNetUnfolder]: 39/95 cut-off events. [2023-08-30 02:38:35,623 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 02:38:35,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 95 events. 39/95 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 346 event pairs, 39 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 192. Up to 81 conditions per place. [2023-08-30 02:38:35,624 INFO L137 encePairwiseOnDemand]: 104/106 looper letters, 9 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-30 02:38:35,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 13 transitions, 58 flow [2023-08-30 02:38:35,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:35,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:35,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-08-30 02:38:35,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-08-30 02:38:35,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:35,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 02:38:35,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,629 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,629 INFO L175 Difference]: Start difference. First operand has 21 places, 14 transitions, 40 flow. Second operand 3 states and 146 transitions. [2023-08-30 02:38:35,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 13 transitions, 58 flow [2023-08-30 02:38:35,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 13 transitions, 57 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:35,630 INFO L231 Difference]: Finished difference. Result has 21 places, 13 transitions, 39 flow [2023-08-30 02:38:35,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=21, PETRI_TRANSITIONS=13} [2023-08-30 02:38:35,631 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-08-30 02:38:35,631 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 13 transitions, 39 flow [2023-08-30 02:38:35,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 02:38:35,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:38:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 02:38:35,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 303929195, now seen corresponding path program 1 times [2023-08-30 02:38:35,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318958144] [2023-08-30 02:38:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:35,653 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 02:38:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318958144] [2023-08-30 02:38:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318958144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540103160] [2023-08-30 02:38:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:35,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:35,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-08-30 02:38:35,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 13 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 02:38:35,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:35,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-08-30 02:38:35,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:35,688 INFO L130 PetriNetUnfolder]: 42/97 cut-off events. [2023-08-30 02:38:35,688 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:38:35,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 97 events. 42/97 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 413 event pairs, 16 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 199. Up to 47 conditions per place. [2023-08-30 02:38:35,689 INFO L137 encePairwiseOnDemand]: 102/106 looper letters, 13 selfloop transitions, 3 changer transitions 0/19 dead transitions. [2023-08-30 02:38:35,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 88 flow [2023-08-30 02:38:35,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-08-30 02:38:35,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46855345911949686 [2023-08-30 02:38:35,691 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-08-30 02:38:35,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-08-30 02:38:35,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:35,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-08-30 02:38:35,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 02:38:35,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,694 INFO L175 Difference]: Start difference. First operand has 21 places, 13 transitions, 39 flow. Second operand 3 states and 149 transitions. [2023-08-30 02:38:35,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 88 flow [2023-08-30 02:38:35,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:35,695 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 60 flow [2023-08-30 02:38:35,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-08-30 02:38:35,696 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-08-30 02:38:35,696 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 60 flow [2023-08-30 02:38:35,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 02:38:35,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:35,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 02:38:35,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1791080685, now seen corresponding path program 1 times [2023-08-30 02:38:35,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866403659] [2023-08-30 02:38:35,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:35,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866403659] [2023-08-30 02:38:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866403659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:35,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:35,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:35,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627732802] [2023-08-30 02:38:35,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:35,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:35,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:35,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:35,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:35,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-08-30 02:38:35,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 02:38:35,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:35,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-08-30 02:38:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:35,772 INFO L130 PetriNetUnfolder]: 33/92 cut-off events. [2023-08-30 02:38:35,772 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-30 02:38:35,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 92 events. 33/92 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 393 event pairs, 18 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 235. Up to 41 conditions per place. [2023-08-30 02:38:35,774 INFO L137 encePairwiseOnDemand]: 102/106 looper letters, 12 selfloop transitions, 4 changer transitions 0/19 dead transitions. [2023-08-30 02:38:35,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 19 transitions, 106 flow [2023-08-30 02:38:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-08-30 02:38:35,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2023-08-30 02:38:35,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-08-30 02:38:35,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-08-30 02:38:35,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:35,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-08-30 02:38:35,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states 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 02:38:35,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,777 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,778 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 60 flow. Second operand 3 states and 147 transitions. [2023-08-30 02:38:35,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 19 transitions, 106 flow [2023-08-30 02:38:35,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:35,779 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 82 flow [2023-08-30 02:38:35,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-08-30 02:38:35,780 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2023-08-30 02:38:35,780 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 82 flow [2023-08-30 02:38:35,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 02:38:35,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:35,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 02:38:35,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,782 INFO L85 PathProgramCache]: Analyzing trace with hash 312372190, now seen corresponding path program 1 times [2023-08-30 02:38:35,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531767697] [2023-08-30 02:38:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:35,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:38:35,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:35,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531767697] [2023-08-30 02:38:35,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531767697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:35,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:35,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:35,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350536261] [2023-08-30 02:38:35,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:35,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:35,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:35,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:35,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:35,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-08-30 02:38:35,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:38:35,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:35,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-08-30 02:38:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:35,862 INFO L130 PetriNetUnfolder]: 29/78 cut-off events. [2023-08-30 02:38:35,862 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 02:38:35,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 78 events. 29/78 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 299 event pairs, 6 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 235. Up to 61 conditions per place. [2023-08-30 02:38:35,863 INFO L137 encePairwiseOnDemand]: 104/106 looper letters, 14 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-08-30 02:38:35,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 123 flow [2023-08-30 02:38:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-08-30 02:38:35,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2023-08-30 02:38:35,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:35,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-08-30 02:38:35,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 02:38:35,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,866 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 82 flow. Second operand 3 states and 146 transitions. [2023-08-30 02:38:35,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 123 flow [2023-08-30 02:38:35,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 115 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:35,868 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 74 flow [2023-08-30 02:38:35,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-30 02:38:35,868 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-30 02:38:35,869 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 74 flow [2023-08-30 02:38:35,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:38:35,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:35,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 02:38:35,869 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash 311075759, now seen corresponding path program 1 times [2023-08-30 02:38:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099151007] [2023-08-30 02:38:35,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:35,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:35,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099151007] [2023-08-30 02:38:35,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099151007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:35,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:35,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:35,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510605402] [2023-08-30 02:38:35,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:35,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:35,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:35,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:35,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:35,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2023-08-30 02:38:35,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:38:35,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:35,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2023-08-30 02:38:35,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:35,936 INFO L130 PetriNetUnfolder]: 25/76 cut-off events. [2023-08-30 02:38:35,937 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 02:38:35,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 76 events. 25/76 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 301 event pairs, 8 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 215. Up to 45 conditions per place. [2023-08-30 02:38:35,937 INFO L137 encePairwiseOnDemand]: 104/106 looper letters, 12 selfloop transitions, 2 changer transitions 0/17 dead transitions. [2023-08-30 02:38:35,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 17 transitions, 104 flow [2023-08-30 02:38:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:35,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2023-08-30 02:38:35,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2023-08-30 02:38:35,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 144 transitions. [2023-08-30 02:38:35,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 144 transitions. [2023-08-30 02:38:35,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:35,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 144 transitions. [2023-08-30 02:38:35,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 02:38:35,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,941 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 106.0) internal successors, (424), 4 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 02:38:35,941 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 74 flow. Second operand 3 states and 144 transitions. [2023-08-30 02:38:35,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 17 transitions, 104 flow [2023-08-30 02:38:35,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 17 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:35,943 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 72 flow [2023-08-30 02:38:35,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=106, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-08-30 02:38:35,943 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-08-30 02:38:35,943 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 72 flow [2023-08-30 02:38:35,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 02:38:35,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:35,944 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-30 02:38:35,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 02:38:35,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-08-30 02:38:35,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1051161220, now seen corresponding path program 1 times [2023-08-30 02:38:35,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:35,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471650903] [2023-08-30 02:38:35,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:35,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:35,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:38:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:35,962 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:38:35,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:38:35,963 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-30 02:38:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2023-08-30 02:38:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-08-30 02:38:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-08-30 02:38:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-08-30 02:38:35,963 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2023-08-30 02:38:35,964 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-08-30 02:38:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 02:38:35,964 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:35,964 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:38:35,964 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-30 02:38:35,976 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:38:35,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 70 transitions, 161 flow [2023-08-30 02:38:35,993 INFO L130 PetriNetUnfolder]: 4/119 cut-off events. [2023-08-30 02:38:35,993 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:38:35,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 119 events. 4/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 255 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2023-08-30 02:38:35,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 70 transitions, 161 flow [2023-08-30 02:38:35,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 70 transitions, 161 flow [2023-08-30 02:38:35,995 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:38:35,995 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 70 transitions, 161 flow [2023-08-30 02:38:35,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 70 transitions, 161 flow [2023-08-30 02:38:35,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 70 transitions, 161 flow [2023-08-30 02:38:36,004 INFO L130 PetriNetUnfolder]: 4/119 cut-off events. [2023-08-30 02:38:36,005 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 02:38:36,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 119 events. 4/119 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 255 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 94. Up to 8 conditions per place. [2023-08-30 02:38:36,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 1980 [2023-08-30 02:38:37,106 INFO L134 LiptonReduction]: Checked pairs total: 3152 [2023-08-30 02:38:37,106 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-30 02:38:37,108 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:38:37,109 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:38:37,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-30 02:38:37,110 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:38:37,110 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:37,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:37,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,111 INFO L85 PathProgramCache]: Analyzing trace with hash 14617, now seen corresponding path program 1 times [2023-08-30 02:38:37,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386521261] [2023-08-30 02:38:37,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 02:38:37,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386521261] [2023-08-30 02:38:37,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386521261] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:37,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476615837] [2023-08-30 02:38:37,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:38:37,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:38:37,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:38:37,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 126 [2023-08-30 02:38:37,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 63 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 02:38:37,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 126 [2023-08-30 02:38:37,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:37,209 INFO L130 PetriNetUnfolder]: 621/1019 cut-off events. [2023-08-30 02:38:37,210 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 02:38:37,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1019 events. 621/1019 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5487 event pairs, 621 based on Foata normal form. 0/598 useless extension candidates. Maximal degree in co-relation 399. Up to 962 conditions per place. [2023-08-30 02:38:37,217 INFO L137 encePairwiseOnDemand]: 124/126 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-30 02:38:37,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 91 flow [2023-08-30 02:38:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:38:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:38:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 136 transitions. [2023-08-30 02:38:37,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2023-08-30 02:38:37,218 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 136 transitions. [2023-08-30 02:38:37,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 136 transitions. [2023-08-30 02:38:37,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:37,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 136 transitions. [2023-08-30 02:38:37,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 02:38:37,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 02:38:37,219 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 02:38:37,219 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 63 flow. Second operand 2 states and 136 transitions. [2023-08-30 02:38:37,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 91 flow [2023-08-30 02:38:37,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 85 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:37,221 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 53 flow [2023-08-30 02:38:37,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=53, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-30 02:38:37,221 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-08-30 02:38:37,222 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 53 flow [2023-08-30 02:38:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 02:38:37,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:37,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 02:38:37,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash 14609, now seen corresponding path program 1 times [2023-08-30 02:38:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015502849] [2023-08-30 02:38:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,248 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 02:38:37,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015502849] [2023-08-30 02:38:37,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015502849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:37,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680719620] [2023-08-30 02:38:37,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:37,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 126 [2023-08-30 02:38:37,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 02:38:37,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 126 [2023-08-30 02:38:37,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:37,336 INFO L130 PetriNetUnfolder]: 450/763 cut-off events. [2023-08-30 02:38:37,336 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 02:38:37,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1552 conditions, 763 events. 450/763 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3913 event pairs, 450 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1546. Up to 705 conditions per place. [2023-08-30 02:38:37,341 INFO L137 encePairwiseOnDemand]: 124/126 looper letters, 14 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-30 02:38:37,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 18 transitions, 81 flow [2023-08-30 02:38:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2023-08-30 02:38:37,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2023-08-30 02:38:37,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2023-08-30 02:38:37,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2023-08-30 02:38:37,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:37,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2023-08-30 02:38:37,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 02:38:37,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,345 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 53 flow. Second operand 3 states and 181 transitions. [2023-08-30 02:38:37,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 18 transitions, 81 flow [2023-08-30 02:38:37,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:37,346 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 53 flow [2023-08-30 02:38:37,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-30 02:38:37,349 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:38:37,349 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 53 flow [2023-08-30 02:38:37,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 02:38:37,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 02:38:37,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 14608, now seen corresponding path program 1 times [2023-08-30 02:38:37,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581600878] [2023-08-30 02:38:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,388 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 02:38:37,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581600878] [2023-08-30 02:38:37,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581600878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:37,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895013156] [2023-08-30 02:38:37,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:37,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:37,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:37,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 126 [2023-08-30 02:38:37,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 02:38:37,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 126 [2023-08-30 02:38:37,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:37,455 INFO L130 PetriNetUnfolder]: 279/507 cut-off events. [2023-08-30 02:38:37,456 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 02:38:37,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 507 events. 279/507 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2432 event pairs, 279 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 1035. Up to 449 conditions per place. [2023-08-30 02:38:37,459 INFO L137 encePairwiseOnDemand]: 124/126 looper letters, 13 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 02:38:37,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-30 02:38:37,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2023-08-30 02:38:37,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2023-08-30 02:38:37,461 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2023-08-30 02:38:37,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2023-08-30 02:38:37,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:37,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2023-08-30 02:38:37,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 02:38:37,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,463 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 53 flow. Second operand 3 states and 174 transitions. [2023-08-30 02:38:37,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-30 02:38:37,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:37,465 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 52 flow [2023-08-30 02:38:37,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-08-30 02:38:37,466 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 0 predicate places. [2023-08-30 02:38:37,466 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 52 flow [2023-08-30 02:38:37,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 02:38:37,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:38:37,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 02:38:37,467 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,468 INFO L85 PathProgramCache]: Analyzing trace with hash 435614616, now seen corresponding path program 1 times [2023-08-30 02:38:37,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928567338] [2023-08-30 02:38:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,491 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 02:38:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928567338] [2023-08-30 02:38:37,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928567338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:37,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275254814] [2023-08-30 02:38:37,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:37,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:37,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:37,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-08-30 02:38:37,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 02:38:37,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-08-30 02:38:37,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:37,579 INFO L130 PetriNetUnfolder]: 370/649 cut-off events. [2023-08-30 02:38:37,579 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-30 02:38:37,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 649 events. 370/649 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3549 event pairs, 180 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1344. Up to 363 conditions per place. [2023-08-30 02:38:37,583 INFO L137 encePairwiseOnDemand]: 121/126 looper letters, 20 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-08-30 02:38:37,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 130 flow [2023-08-30 02:38:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 181 transitions. [2023-08-30 02:38:37,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47883597883597884 [2023-08-30 02:38:37,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 181 transitions. [2023-08-30 02:38:37,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 181 transitions. [2023-08-30 02:38:37,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:37,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 181 transitions. [2023-08-30 02:38:37,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 02:38:37,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,586 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 52 flow. Second operand 3 states and 181 transitions. [2023-08-30 02:38:37,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 130 flow [2023-08-30 02:38:37,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 27 transitions, 129 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:37,587 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 81 flow [2023-08-30 02:38:37,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-30 02:38:37,587 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 3 predicate places. [2023-08-30 02:38:37,587 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 81 flow [2023-08-30 02:38:37,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 02:38:37,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,588 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:37,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 02:38:37,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash -106723121, now seen corresponding path program 1 times [2023-08-30 02:38:37,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230313064] [2023-08-30 02:38:37,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:37,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230313064] [2023-08-30 02:38:37,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230313064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:37,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741819819] [2023-08-30 02:38:37,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:37,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:37,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-08-30 02:38:37,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 02:38:37,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-08-30 02:38:37,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:37,690 INFO L130 PetriNetUnfolder]: 432/765 cut-off events. [2023-08-30 02:38:37,691 INFO L131 PetriNetUnfolder]: For 445/445 co-relation queries the response was YES. [2023-08-30 02:38:37,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 765 events. 432/765 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 4372 event pairs, 182 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 1991. Up to 429 conditions per place. [2023-08-30 02:38:37,696 INFO L137 encePairwiseOnDemand]: 121/126 looper letters, 22 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-08-30 02:38:37,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 182 flow [2023-08-30 02:38:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:37,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:37,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 180 transitions. [2023-08-30 02:38:37,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-08-30 02:38:37,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 180 transitions. [2023-08-30 02:38:37,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 180 transitions. [2023-08-30 02:38:37,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:37,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 180 transitions. [2023-08-30 02:38:37,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 02:38:37,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,700 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 81 flow. Second operand 3 states and 180 transitions. [2023-08-30 02:38:37,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 182 flow [2023-08-30 02:38:37,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:37,704 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 121 flow [2023-08-30 02:38:37,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-30 02:38:37,705 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2023-08-30 02:38:37,705 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 121 flow [2023-08-30 02:38:37,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 02:38:37,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,705 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 02:38:37,706 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,706 INFO L85 PathProgramCache]: Analyzing trace with hash 988110508, now seen corresponding path program 1 times [2023-08-30 02:38:37,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353850240] [2023-08-30 02:38:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:38:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353850240] [2023-08-30 02:38:37,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353850240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90052287] [2023-08-30 02:38:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:37,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:37,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:37,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-08-30 02:38:37,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 121 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-08-30 02:38:37,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:37,914 INFO L130 PetriNetUnfolder]: 352/619 cut-off events. [2023-08-30 02:38:37,914 INFO L131 PetriNetUnfolder]: For 556/556 co-relation queries the response was YES. [2023-08-30 02:38:37,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1890 conditions, 619 events. 352/619 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3527 event pairs, 64 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 1881. Up to 512 conditions per place. [2023-08-30 02:38:37,919 INFO L137 encePairwiseOnDemand]: 124/126 looper letters, 28 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 02:38:37,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 227 flow [2023-08-30 02:38:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 179 transitions. [2023-08-30 02:38:37,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354497354497355 [2023-08-30 02:38:37,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 179 transitions. [2023-08-30 02:38:37,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 179 transitions. [2023-08-30 02:38:37,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:37,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 179 transitions. [2023-08-30 02:38:37,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,922 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,922 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 121 flow. Second operand 3 states and 179 transitions. [2023-08-30 02:38:37,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 227 flow [2023-08-30 02:38:37,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:37,924 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 109 flow [2023-08-30 02:38:37,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 02:38:37,925 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-30 02:38:37,925 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 109 flow [2023-08-30 02:38:37,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:37,925 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:37,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 02:38:37,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:37,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash 986552769, now seen corresponding path program 1 times [2023-08-30 02:38:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219159585] [2023-08-30 02:38:37,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:37,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219159585] [2023-08-30 02:38:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219159585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975380713] [2023-08-30 02:38:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:37,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-08-30 02:38:37,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 109 flow. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:37,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:37,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-08-30 02:38:37,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:38,033 INFO L130 PetriNetUnfolder]: 285/518 cut-off events. [2023-08-30 02:38:38,034 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2023-08-30 02:38:38,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 518 events. 285/518 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 2844 event pairs, 51 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 1521. Up to 412 conditions per place. [2023-08-30 02:38:38,037 INFO L137 encePairwiseOnDemand]: 124/126 looper letters, 25 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-30 02:38:38,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 194 flow [2023-08-30 02:38:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:38,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 176 transitions. [2023-08-30 02:38:38,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2023-08-30 02:38:38,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 176 transitions. [2023-08-30 02:38:38,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 176 transitions. [2023-08-30 02:38:38,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:38,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 176 transitions. [2023-08-30 02:38:38,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 02:38:38,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,041 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 109 flow. Second operand 3 states and 176 transitions. [2023-08-30 02:38:38,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 194 flow [2023-08-30 02:38:38,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:38,043 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 107 flow [2023-08-30 02:38:38,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-30 02:38:38,045 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2023-08-30 02:38:38,045 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 107 flow [2023-08-30 02:38:38,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:38,046 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:38,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 02:38:38,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:38,047 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:38,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1528726566, now seen corresponding path program 1 times [2023-08-30 02:38:38,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:38,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536428924] [2023-08-30 02:38:38,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:38,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:38,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:38,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:38:38,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:38,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536428924] [2023-08-30 02:38:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536428924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:38,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:38,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:38,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102903399] [2023-08-30 02:38:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:38,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:38,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:38,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-08-30 02:38:38,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 02:38:38,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:38,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-08-30 02:38:38,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:38,159 INFO L130 PetriNetUnfolder]: 284/582 cut-off events. [2023-08-30 02:38:38,159 INFO L131 PetriNetUnfolder]: For 470/470 co-relation queries the response was YES. [2023-08-30 02:38:38,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1690 conditions, 582 events. 284/582 cut-off events. For 470/470 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 3485 event pairs, 140 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1681. Up to 341 conditions per place. [2023-08-30 02:38:38,163 INFO L137 encePairwiseOnDemand]: 121/126 looper letters, 20 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2023-08-30 02:38:38,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 215 flow [2023-08-30 02:38:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:38,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-08-30 02:38:38,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2023-08-30 02:38:38,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-08-30 02:38:38,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-08-30 02:38:38,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:38,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-08-30 02:38:38,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 02:38:38,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,166 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 107 flow. Second operand 3 states and 175 transitions. [2023-08-30 02:38:38,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 215 flow [2023-08-30 02:38:38,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:38,167 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 183 flow [2023-08-30 02:38:38,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2023-08-30 02:38:38,168 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-08-30 02:38:38,168 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 183 flow [2023-08-30 02:38:38,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 02:38:38,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:38,168 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:38,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 02:38:38,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:38,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash 145886174, now seen corresponding path program 1 times [2023-08-30 02:38:38,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:38,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131505123] [2023-08-30 02:38:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:38,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:38,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:38:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131505123] [2023-08-30 02:38:38,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131505123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:38,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:38,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:38,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297523085] [2023-08-30 02:38:38,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:38,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:38,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:38,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:38,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 126 [2023-08-30 02:38:38,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 02:38:38,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:38,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 126 [2023-08-30 02:38:38,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:38,268 INFO L130 PetriNetUnfolder]: 237/505 cut-off events. [2023-08-30 02:38:38,269 INFO L131 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2023-08-30 02:38:38,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 505 events. 237/505 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3003 event pairs, 79 based on Foata normal form. 30/531 useless extension candidates. Maximal degree in co-relation 1749. Up to 316 conditions per place. [2023-08-30 02:38:38,272 INFO L137 encePairwiseOnDemand]: 124/126 looper letters, 26 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-08-30 02:38:38,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 275 flow [2023-08-30 02:38:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2023-08-30 02:38:38,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576719576719577 [2023-08-30 02:38:38,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 173 transitions. [2023-08-30 02:38:38,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 173 transitions. [2023-08-30 02:38:38,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:38,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 173 transitions. [2023-08-30 02:38:38,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 02:38:38,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,293 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:38,294 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 183 flow. Second operand 3 states and 173 transitions. [2023-08-30 02:38:38,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 275 flow [2023-08-30 02:38:38,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 257 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:38,296 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 169 flow [2023-08-30 02:38:38,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=126, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-08-30 02:38:38,296 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2023-08-30 02:38:38,296 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 169 flow [2023-08-30 02:38:38,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 02:38:38,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:38,297 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-30 02:38:38,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 02:38:38,297 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-08-30 02:38:38,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:38,297 INFO L85 PathProgramCache]: Analyzing trace with hash 224726463, now seen corresponding path program 1 times [2023-08-30 02:38:38,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:38,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162327511] [2023-08-30 02:38:38,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:38,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:38,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:38:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:38,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:38:38,314 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:38:38,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-08-30 02:38:38,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2023-08-30 02:38:38,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-08-30 02:38:38,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-08-30 02:38:38,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-08-30 02:38:38,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-08-30 02:38:38,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2023-08-30 02:38:38,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2023-08-30 02:38:38,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-30 02:38:38,315 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:38,316 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:38:38,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-30 02:38:38,329 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:38:38,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 196 flow [2023-08-30 02:38:38,340 INFO L130 PetriNetUnfolder]: 5/148 cut-off events. [2023-08-30 02:38:38,340 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:38:38,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 148 events. 5/148 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 340 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 127. Up to 10 conditions per place. [2023-08-30 02:38:38,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 82 transitions, 196 flow [2023-08-30 02:38:38,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 82 transitions, 196 flow [2023-08-30 02:38:38,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:38:38,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 82 transitions, 196 flow [2023-08-30 02:38:38,342 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 82 transitions, 196 flow [2023-08-30 02:38:38,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 82 transitions, 196 flow [2023-08-30 02:38:38,351 INFO L130 PetriNetUnfolder]: 5/148 cut-off events. [2023-08-30 02:38:38,351 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 02:38:38,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 148 events. 5/148 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 340 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 127. Up to 10 conditions per place. [2023-08-30 02:38:38,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 3168 [2023-08-30 02:38:39,609 INFO L134 LiptonReduction]: Checked pairs total: 4745 [2023-08-30 02:38:39,609 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-08-30 02:38:39,617 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:38:39,617 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:38:39,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-30 02:38:39,618 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 02:38:39,618 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:39,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:39,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:39,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:39,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:39,619 INFO L85 PathProgramCache]: Analyzing trace with hash 19575, now seen corresponding path program 1 times [2023-08-30 02:38:39,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:39,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080050841] [2023-08-30 02:38:39,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:39,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:39,634 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 02:38:39,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:39,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080050841] [2023-08-30 02:38:39,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080050841] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:39,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:39,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:39,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487787209] [2023-08-30 02:38:39,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:39,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:39,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 146 [2023-08-30 02:38:39,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:38:39,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:39,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 146 [2023-08-30 02:38:39,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:39,928 INFO L130 PetriNetUnfolder]: 2562/3819 cut-off events. [2023-08-30 02:38:39,928 INFO L131 PetriNetUnfolder]: For 1054/1054 co-relation queries the response was YES. [2023-08-30 02:38:39,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 3819 events. 2562/3819 cut-off events. For 1054/1054 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 21254 event pairs, 2562 based on Foata normal form. 0/2454 useless extension candidates. Maximal degree in co-relation 1631. Up to 3585 conditions per place. [2023-08-30 02:38:39,952 INFO L137 encePairwiseOnDemand]: 142/146 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 02:38:39,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 114 flow [2023-08-30 02:38:39,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:39,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-30 02:38:39,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2023-08-30 02:38:39,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-30 02:38:39,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-30 02:38:39,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:39,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-30 02:38:39,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 02:38:39,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:39,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:39,956 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 82 flow. Second operand 3 states and 208 transitions. [2023-08-30 02:38:39,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 114 flow [2023-08-30 02:38:39,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 22 transitions, 102 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:39,958 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 66 flow [2023-08-30 02:38:39,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2023-08-30 02:38:39,958 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-30 02:38:39,958 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 66 flow [2023-08-30 02:38:39,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:38:39,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:39,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:39,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-30 02:38:39,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:39,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:39,960 INFO L85 PathProgramCache]: Analyzing trace with hash 19574, now seen corresponding path program 1 times [2023-08-30 02:38:39,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:39,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150139519] [2023-08-30 02:38:39,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:39,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:39,981 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 02:38:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150139519] [2023-08-30 02:38:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150139519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:39,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224397006] [2023-08-30 02:38:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:39,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 146 [2023-08-30 02:38:39,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 02:38:39,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:39,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 146 [2023-08-30 02:38:39,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:40,196 INFO L130 PetriNetUnfolder]: 1623/2539 cut-off events. [2023-08-30 02:38:40,196 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-30 02:38:40,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 2539 events. 1623/2539 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13716 event pairs, 1623 based on Foata normal form. 0/1828 useless extension candidates. Maximal degree in co-relation 5160. Up to 2305 conditions per place. [2023-08-30 02:38:40,213 INFO L137 encePairwiseOnDemand]: 144/146 looper letters, 17 selfloop transitions, 1 changer transitions 0/21 dead transitions. [2023-08-30 02:38:40,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 21 transitions, 100 flow [2023-08-30 02:38:40,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-08-30 02:38:40,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817351598173516 [2023-08-30 02:38:40,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-08-30 02:38:40,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-08-30 02:38:40,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:40,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-08-30 02:38:40,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 02:38:40,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:40,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:40,218 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 66 flow. Second operand 3 states and 211 transitions. [2023-08-30 02:38:40,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 21 transitions, 100 flow [2023-08-30 02:38:40,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 21 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:40,219 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 65 flow [2023-08-30 02:38:40,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2023-08-30 02:38:40,219 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-08-30 02:38:40,219 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 65 flow [2023-08-30 02:38:40,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 02:38:40,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:40,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:38:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-30 02:38:40,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:40,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash 583704834, now seen corresponding path program 1 times [2023-08-30 02:38:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382548845] [2023-08-30 02:38:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:40,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:40,241 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 02:38:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382548845] [2023-08-30 02:38:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382548845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:40,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:40,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313454781] [2023-08-30 02:38:40,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:40,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:40,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 02:38:40,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:40,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:40,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:40,512 INFO L130 PetriNetUnfolder]: 2300/3511 cut-off events. [2023-08-30 02:38:40,513 INFO L131 PetriNetUnfolder]: For 321/321 co-relation queries the response was YES. [2023-08-30 02:38:40,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7232 conditions, 3511 events. 2300/3511 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 20776 event pairs, 1224 based on Foata normal form. 0/2644 useless extension candidates. Maximal degree in co-relation 7221. Up to 2129 conditions per place. [2023-08-30 02:38:40,535 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 27 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-30 02:38:40,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 172 flow [2023-08-30 02:38:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:40,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2023-08-30 02:38:40,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863013698630137 [2023-08-30 02:38:40,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 213 transitions. [2023-08-30 02:38:40,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 213 transitions. [2023-08-30 02:38:40,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:40,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 213 transitions. [2023-08-30 02:38:40,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 02:38:40,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:40,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:40,539 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 65 flow. Second operand 3 states and 213 transitions. [2023-08-30 02:38:40,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 172 flow [2023-08-30 02:38:40,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:40,541 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 102 flow [2023-08-30 02:38:40,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-08-30 02:38:40,541 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-30 02:38:40,542 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 102 flow [2023-08-30 02:38:40,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 02:38:40,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:40,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:40,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-30 02:38:40,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:40,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -787392631, now seen corresponding path program 1 times [2023-08-30 02:38:40,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:40,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254588019] [2023-08-30 02:38:40,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:40,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:40,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254588019] [2023-08-30 02:38:40,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254588019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:40,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:40,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:40,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548402474] [2023-08-30 02:38:40,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:40,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:40,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:40,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:40,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:40,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 02:38:40,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:40,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:40,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:40,965 INFO L130 PetriNetUnfolder]: 3060/4717 cut-off events. [2023-08-30 02:38:40,965 INFO L131 PetriNetUnfolder]: For 2755/2755 co-relation queries the response was YES. [2023-08-30 02:38:40,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12126 conditions, 4717 events. 3060/4717 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 30231 event pairs, 1352 based on Foata normal form. 0/3843 useless extension candidates. Maximal degree in co-relation 12114. Up to 2885 conditions per place. [2023-08-30 02:38:40,994 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-30 02:38:40,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 244 flow [2023-08-30 02:38:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2023-08-30 02:38:40,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840182648401826 [2023-08-30 02:38:40,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2023-08-30 02:38:40,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2023-08-30 02:38:40,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:40,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2023-08-30 02:38:40,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 02:38:40,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:40,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:40,999 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 102 flow. Second operand 3 states and 212 transitions. [2023-08-30 02:38:40,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 244 flow [2023-08-30 02:38:41,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:41,012 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 160 flow [2023-08-30 02:38:41,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-30 02:38:41,013 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-30 02:38:41,013 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 160 flow [2023-08-30 02:38:41,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 02:38:41,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:41,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:41,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-30 02:38:41,013 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:41,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1362332912, now seen corresponding path program 1 times [2023-08-30 02:38:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:41,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669914307] [2023-08-30 02:38:41,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:41,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:41,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:38:41,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:41,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669914307] [2023-08-30 02:38:41,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669914307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:41,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:41,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:41,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46149877] [2023-08-30 02:38:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:41,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:41,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:41,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:41,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:41,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:41,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:41,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:41,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:41,431 INFO L130 PetriNetUnfolder]: 2474/3707 cut-off events. [2023-08-30 02:38:41,431 INFO L131 PetriNetUnfolder]: For 3413/3413 co-relation queries the response was YES. [2023-08-30 02:38:41,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11161 conditions, 3707 events. 2474/3707 cut-off events. For 3413/3413 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 22925 event pairs, 472 based on Foata normal form. 0/3135 useless extension candidates. Maximal degree in co-relation 11148. Up to 3026 conditions per place. [2023-08-30 02:38:41,458 INFO L137 encePairwiseOnDemand]: 144/146 looper letters, 41 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-30 02:38:41,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 323 flow [2023-08-30 02:38:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:41,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-08-30 02:38:41,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817351598173516 [2023-08-30 02:38:41,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-08-30 02:38:41,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-08-30 02:38:41,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:41,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-08-30 02:38:41,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 02:38:41,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:41,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:41,462 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 160 flow. Second operand 3 states and 211 transitions. [2023-08-30 02:38:41,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 323 flow [2023-08-30 02:38:41,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:41,482 INFO L231 Difference]: Finished difference. Result has 37 places, 30 transitions, 144 flow [2023-08-30 02:38:41,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=37, PETRI_TRANSITIONS=30} [2023-08-30 02:38:41,483 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-30 02:38:41,483 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 30 transitions, 144 flow [2023-08-30 02:38:41,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:41,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:41,484 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:41,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-30 02:38:41,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:41,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1360634743, now seen corresponding path program 1 times [2023-08-30 02:38:41,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:41,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120049519] [2023-08-30 02:38:41,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:41,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:41,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120049519] [2023-08-30 02:38:41,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120049519] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:41,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:41,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:41,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285110953] [2023-08-30 02:38:41,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:41,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:41,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:41,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:41,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:41,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:41,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:41,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:41,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:41,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:41,791 INFO L130 PetriNetUnfolder]: 1993/3029 cut-off events. [2023-08-30 02:38:41,791 INFO L131 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2023-08-30 02:38:41,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 3029 events. 1993/3029 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 18269 event pairs, 335 based on Foata normal form. 0/2581 useless extension candidates. Maximal degree in co-relation 8815. Up to 2450 conditions per place. [2023-08-30 02:38:41,813 INFO L137 encePairwiseOnDemand]: 144/146 looper letters, 38 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-30 02:38:41,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 43 transitions, 284 flow [2023-08-30 02:38:41,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-08-30 02:38:41,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748858447488584 [2023-08-30 02:38:41,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-08-30 02:38:41,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-08-30 02:38:41,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:41,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-08-30 02:38:41,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 02:38:41,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:41,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:41,818 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 144 flow. Second operand 3 states and 208 transitions. [2023-08-30 02:38:41,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 43 transitions, 284 flow [2023-08-30 02:38:41,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:41,820 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 142 flow [2023-08-30 02:38:41,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-30 02:38:41,821 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-30 02:38:41,821 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 142 flow [2023-08-30 02:38:41,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:41,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:41,821 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:41,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-30 02:38:41,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:41,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:41,822 INFO L85 PathProgramCache]: Analyzing trace with hash -222172604, now seen corresponding path program 1 times [2023-08-30 02:38:41,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:41,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854654031] [2023-08-30 02:38:41,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:41,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:38:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854654031] [2023-08-30 02:38:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854654031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004392880] [2023-08-30 02:38:41,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:41,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:41,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:41,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 02:38:41,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:41,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:41,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:42,172 INFO L130 PetriNetUnfolder]: 2430/3913 cut-off events. [2023-08-30 02:38:42,173 INFO L131 PetriNetUnfolder]: For 3547/3547 co-relation queries the response was YES. [2023-08-30 02:38:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11285 conditions, 3913 events. 2430/3913 cut-off events. For 3547/3547 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 26103 event pairs, 988 based on Foata normal form. 0/3420 useless extension candidates. Maximal degree in co-relation 11272. Up to 2459 conditions per place. [2023-08-30 02:38:42,198 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 30 selfloop transitions, 13 changer transitions 0/46 dead transitions. [2023-08-30 02:38:42,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 46 transitions, 313 flow [2023-08-30 02:38:42,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2023-08-30 02:38:42,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2023-08-30 02:38:42,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2023-08-30 02:38:42,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2023-08-30 02:38:42,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:42,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2023-08-30 02:38:42,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states 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 02:38:42,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:42,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:42,202 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 142 flow. Second operand 3 states and 207 transitions. [2023-08-30 02:38:42,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 46 transitions, 313 flow [2023-08-30 02:38:42,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 46 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:42,204 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 266 flow [2023-08-30 02:38:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-30 02:38:42,205 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-30 02:38:42,205 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 266 flow [2023-08-30 02:38:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 02:38:42,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:42,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:42,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-30 02:38:42,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:42,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1702587386, now seen corresponding path program 1 times [2023-08-30 02:38:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591544711] [2023-08-30 02:38:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:42,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:38:42,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591544711] [2023-08-30 02:38:42,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591544711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:42,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:42,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312309524] [2023-08-30 02:38:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:42,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:42,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:42,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:42,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:42,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 266 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:42,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:42,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:42,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:42,531 INFO L130 PetriNetUnfolder]: 1955/3099 cut-off events. [2023-08-30 02:38:42,531 INFO L131 PetriNetUnfolder]: For 5131/5131 co-relation queries the response was YES. [2023-08-30 02:38:42,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11105 conditions, 3099 events. 1955/3099 cut-off events. For 5131/5131 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 19850 event pairs, 409 based on Foata normal form. 204/3066 useless extension candidates. Maximal degree in co-relation 11091. Up to 2442 conditions per place. [2023-08-30 02:38:42,554 INFO L137 encePairwiseOnDemand]: 144/146 looper letters, 45 selfloop transitions, 4 changer transitions 0/52 dead transitions. [2023-08-30 02:38:42,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 449 flow [2023-08-30 02:38:42,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 205 transitions. [2023-08-30 02:38:42,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680365296803653 [2023-08-30 02:38:42,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 205 transitions. [2023-08-30 02:38:42,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 205 transitions. [2023-08-30 02:38:42,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:42,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 205 transitions. [2023-08-30 02:38:42,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 02:38:42,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:42,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:42,558 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 266 flow. Second operand 3 states and 205 transitions. [2023-08-30 02:38:42,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 449 flow [2023-08-30 02:38:42,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 423 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:42,564 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 244 flow [2023-08-30 02:38:42,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-30 02:38:42,564 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-30 02:38:42,565 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 244 flow [2023-08-30 02:38:42,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:42,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:42,565 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:42,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-30 02:38:42,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:42,566 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:42,566 INFO L85 PathProgramCache]: Analyzing trace with hash -886943694, now seen corresponding path program 1 times [2023-08-30 02:38:42,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:42,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655350921] [2023-08-30 02:38:42,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:42,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:42,585 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 02:38:42,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:42,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655350921] [2023-08-30 02:38:42,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655350921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:42,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:42,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:42,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129459326] [2023-08-30 02:38:42,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:42,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:42,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:42,597 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:38:42,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:42,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:42,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:42,857 INFO L130 PetriNetUnfolder]: 2132/3676 cut-off events. [2023-08-30 02:38:42,857 INFO L131 PetriNetUnfolder]: For 5429/5429 co-relation queries the response was YES. [2023-08-30 02:38:42,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12141 conditions, 3676 events. 2132/3676 cut-off events. For 5429/5429 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 26032 event pairs, 890 based on Foata normal form. 0/3493 useless extension candidates. Maximal degree in co-relation 12127. Up to 2397 conditions per place. [2023-08-30 02:38:42,886 INFO L137 encePairwiseOnDemand]: 140/146 looper letters, 33 selfloop transitions, 21 changer transitions 0/57 dead transitions. [2023-08-30 02:38:42,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 492 flow [2023-08-30 02:38:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2023-08-30 02:38:42,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2023-08-30 02:38:42,888 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 204 transitions. [2023-08-30 02:38:42,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 204 transitions. [2023-08-30 02:38:42,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:42,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 204 transitions. [2023-08-30 02:38:42,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 02:38:42,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:42,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:42,890 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 244 flow. Second operand 3 states and 204 transitions. [2023-08-30 02:38:42,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 492 flow [2023-08-30 02:38:42,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 57 transitions, 484 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:42,894 INFO L231 Difference]: Finished difference. Result has 42 places, 50 transitions, 462 flow [2023-08-30 02:38:42,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=462, PETRI_PLACES=42, PETRI_TRANSITIONS=50} [2023-08-30 02:38:42,895 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-30 02:38:42,895 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 50 transitions, 462 flow [2023-08-30 02:38:42,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:38:42,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:42,895 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:42,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-30 02:38:42,896 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:42,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:42,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1725447457, now seen corresponding path program 1 times [2023-08-30 02:38:42,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:42,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140003800] [2023-08-30 02:38:42,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:42,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:42,949 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 02:38:42,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:42,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140003800] [2023-08-30 02:38:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140003800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:42,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:42,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016768446] [2023-08-30 02:38:42,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:42,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:42,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:42,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:42,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:42,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 146 [2023-08-30 02:38:42,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 50 transitions, 462 flow. Second operand has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:42,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:42,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 146 [2023-08-30 02:38:42,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:43,239 INFO L130 PetriNetUnfolder]: 1771/3145 cut-off events. [2023-08-30 02:38:43,240 INFO L131 PetriNetUnfolder]: For 7685/7685 co-relation queries the response was YES. [2023-08-30 02:38:43,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12212 conditions, 3145 events. 1771/3145 cut-off events. For 7685/7685 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 22367 event pairs, 569 based on Foata normal form. 170/3302 useless extension candidates. Maximal degree in co-relation 12197. Up to 1944 conditions per place. [2023-08-30 02:38:43,261 INFO L137 encePairwiseOnDemand]: 144/146 looper letters, 54 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-08-30 02:38:43,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 707 flow [2023-08-30 02:38:43,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2023-08-30 02:38:43,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2023-08-30 02:38:43,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2023-08-30 02:38:43,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2023-08-30 02:38:43,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:43,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2023-08-30 02:38:43,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.33333333333333) internal successors, (202), 3 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 02:38:43,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:43,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 02:38:43,265 INFO L175 Difference]: Start difference. First operand has 42 places, 50 transitions, 462 flow. Second operand 3 states and 202 transitions. [2023-08-30 02:38:43,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 707 flow [2023-08-30 02:38:43,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 65 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:43,272 INFO L231 Difference]: Finished difference. Result has 41 places, 49 transitions, 432 flow [2023-08-30 02:38:43,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=146, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=41, PETRI_TRANSITIONS=49} [2023-08-30 02:38:43,272 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-30 02:38:43,272 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 49 transitions, 432 flow [2023-08-30 02:38:43,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.25) internal successors, (249), 4 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:43,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:43,273 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:43,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-30 02:38:43,273 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-08-30 02:38:43,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1952744181, now seen corresponding path program 1 times [2023-08-30 02:38:43,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:43,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570228595] [2023-08-30 02:38:43,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:43,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:43,284 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:38:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:38:43,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:38:43,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:38:43,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-30 02:38:43,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (7 of 9 remaining) [2023-08-30 02:38:43,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-08-30 02:38:43,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-08-30 02:38:43,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 9 remaining) [2023-08-30 02:38:43,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 9 remaining) [2023-08-30 02:38:43,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 9 remaining) [2023-08-30 02:38:43,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 9 remaining) [2023-08-30 02:38:43,294 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2023-08-30 02:38:43,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-30 02:38:43,294 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:43,295 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:38:43,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-30 02:38:43,310 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:38:43,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 94 transitions, 233 flow [2023-08-30 02:38:43,323 INFO L130 PetriNetUnfolder]: 6/177 cut-off events. [2023-08-30 02:38:43,324 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 02:38:43,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 177 events. 6/177 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 424 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2023-08-30 02:38:43,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 94 transitions, 233 flow [2023-08-30 02:38:43,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 94 transitions, 233 flow [2023-08-30 02:38:43,325 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:38:43,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 94 transitions, 233 flow [2023-08-30 02:38:43,326 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 94 transitions, 233 flow [2023-08-30 02:38:43,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 94 transitions, 233 flow [2023-08-30 02:38:43,336 INFO L130 PetriNetUnfolder]: 6/177 cut-off events. [2023-08-30 02:38:43,336 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-30 02:38:43,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 177 events. 6/177 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 424 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 161. Up to 12 conditions per place. [2023-08-30 02:38:43,339 INFO L119 LiptonReduction]: Number of co-enabled transitions 4620 [2023-08-30 02:38:44,630 INFO L134 LiptonReduction]: Checked pairs total: 7223 [2023-08-30 02:38:44,630 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-08-30 02:38:44,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:38:44,631 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:38:44,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-30 02:38:44,633 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 02:38:44,633 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:38:44,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:44,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:44,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:44,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:44,634 INFO L85 PathProgramCache]: Analyzing trace with hash 25365, now seen corresponding path program 1 times [2023-08-30 02:38:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:44,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324454718] [2023-08-30 02:38:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:44,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:44,643 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 02:38:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:44,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324454718] [2023-08-30 02:38:44,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324454718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:44,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:44,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:44,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946071765] [2023-08-30 02:38:44,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:44,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:38:44,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:38:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:38:44,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 166 [2023-08-30 02:38:44,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 103 flow. Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 02:38:44,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:44,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 166 [2023-08-30 02:38:44,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:46,138 INFO L130 PetriNetUnfolder]: 18093/24491 cut-off events. [2023-08-30 02:38:46,138 INFO L131 PetriNetUnfolder]: For 6750/6750 co-relation queries the response was YES. [2023-08-30 02:38:46,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51265 conditions, 24491 events. 18093/24491 cut-off events. For 6750/6750 co-relation queries the response was YES. Maximal size of possible extension queue 1658. Compared 146625 event pairs, 18093 based on Foata normal form. 0/15046 useless extension candidates. Maximal degree in co-relation 10767. Up to 23554 conditions per place. [2023-08-30 02:38:46,261 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 24 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-08-30 02:38:46,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 147 flow [2023-08-30 02:38:46,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:38:46,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:38:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 180 transitions. [2023-08-30 02:38:46,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2023-08-30 02:38:46,263 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 180 transitions. [2023-08-30 02:38:46,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 180 transitions. [2023-08-30 02:38:46,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:46,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 180 transitions. [2023-08-30 02:38:46,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 02:38:46,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states 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 02:38:46,265 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states 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 02:38:46,265 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 103 flow. Second operand 2 states and 180 transitions. [2023-08-30 02:38:46,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 147 flow [2023-08-30 02:38:46,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 27 transitions, 127 flow, removed 10 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:46,270 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 79 flow [2023-08-30 02:38:46,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=79, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-30 02:38:46,270 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2023-08-30 02:38:46,270 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 79 flow [2023-08-30 02:38:46,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 02:38:46,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:46,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:46,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-30 02:38:46,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:46,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:46,272 INFO L85 PathProgramCache]: Analyzing trace with hash 25362, now seen corresponding path program 1 times [2023-08-30 02:38:46,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:46,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857500299] [2023-08-30 02:38:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:46,461 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 02:38:46,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:46,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857500299] [2023-08-30 02:38:46,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857500299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:46,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:46,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:46,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626580667] [2023-08-30 02:38:46,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:46,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:46,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:46,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 166 [2023-08-30 02:38:46,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:46,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:46,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 166 [2023-08-30 02:38:46,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:47,462 INFO L130 PetriNetUnfolder]: 13314/18347 cut-off events. [2023-08-30 02:38:47,462 INFO L131 PetriNetUnfolder]: For 850/850 co-relation queries the response was YES. [2023-08-30 02:38:47,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37042 conditions, 18347 events. 13314/18347 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 108411 event pairs, 13314 based on Foata normal form. 0/11860 useless extension candidates. Maximal degree in co-relation 37034. Up to 17409 conditions per place. [2023-08-30 02:38:47,644 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 02:38:47,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 26 transitions, 123 flow [2023-08-30 02:38:47,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-30 02:38:47,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2023-08-30 02:38:47,646 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-30 02:38:47,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-30 02:38:47,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:47,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-30 02:38:47,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:38:47,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:47,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:47,660 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 79 flow. Second operand 3 states and 237 transitions. [2023-08-30 02:38:47,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 26 transitions, 123 flow [2023-08-30 02:38:47,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:38:47,661 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 79 flow [2023-08-30 02:38:47,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-08-30 02:38:47,662 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 02:38:47,664 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 79 flow [2023-08-30 02:38:47,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:47,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:47,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:38:47,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-30 02:38:47,665 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:47,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash 25361, now seen corresponding path program 1 times [2023-08-30 02:38:47,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:47,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786395936] [2023-08-30 02:38:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:47,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:47,688 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 02:38:47,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:47,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786395936] [2023-08-30 02:38:47,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786395936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:47,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:47,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:38:47,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678686507] [2023-08-30 02:38:47,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:47,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:47,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:47,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:47,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:47,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 166 [2023-08-30 02:38:47,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 02:38:47,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:47,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 166 [2023-08-30 02:38:47,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:48,273 INFO L130 PetriNetUnfolder]: 8535/12203 cut-off events. [2023-08-30 02:38:48,273 INFO L131 PetriNetUnfolder]: For 850/850 co-relation queries the response was YES. [2023-08-30 02:38:48,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24756 conditions, 12203 events. 8535/12203 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 734. Compared 71198 event pairs, 8535 based on Foata normal form. 0/8674 useless extension candidates. Maximal degree in co-relation 24747. Up to 11265 conditions per place. [2023-08-30 02:38:48,323 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 21 selfloop transitions, 1 changer transitions 0/25 dead transitions. [2023-08-30 02:38:48,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 25 transitions, 121 flow [2023-08-30 02:38:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-08-30 02:38:48,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4859437751004016 [2023-08-30 02:38:48,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-08-30 02:38:48,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-08-30 02:38:48,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:48,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-08-30 02:38:48,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:38:48,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:48,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:48,330 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 79 flow. Second operand 3 states and 242 transitions. [2023-08-30 02:38:48,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 25 transitions, 121 flow [2023-08-30 02:38:48,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 25 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:48,331 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 78 flow [2023-08-30 02:38:48,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2023-08-30 02:38:48,332 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2023-08-30 02:38:48,332 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 78 flow [2023-08-30 02:38:48,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 02:38:48,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:48,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:38:48,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-30 02:38:48,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:48,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 756273425, now seen corresponding path program 1 times [2023-08-30 02:38:48,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:48,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511345237] [2023-08-30 02:38:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:48,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:48,352 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 02:38:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:48,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511345237] [2023-08-30 02:38:48,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511345237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677691232] [2023-08-30 02:38:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:48,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:48,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:48,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:48,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:48,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 02:38:48,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:48,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:48,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:49,196 INFO L130 PetriNetUnfolder]: 12384/17359 cut-off events. [2023-08-30 02:38:49,197 INFO L131 PetriNetUnfolder]: For 1342/1342 co-relation queries the response was YES. [2023-08-30 02:38:49,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35567 conditions, 17359 events. 12384/17359 cut-off events. For 1342/1342 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 107416 event pairs, 6940 based on Foata normal form. 0/12590 useless extension candidates. Maximal degree in co-relation 35558. Up to 11057 conditions per place. [2023-08-30 02:38:49,261 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-08-30 02:38:49,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 43 transitions, 214 flow [2023-08-30 02:38:49,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:49,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 245 transitions. [2023-08-30 02:38:49,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919678714859438 [2023-08-30 02:38:49,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 245 transitions. [2023-08-30 02:38:49,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 245 transitions. [2023-08-30 02:38:49,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:49,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 245 transitions. [2023-08-30 02:38:49,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:49,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:49,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:49,265 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 78 flow. Second operand 3 states and 245 transitions. [2023-08-30 02:38:49,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 43 transitions, 214 flow [2023-08-30 02:38:49,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:49,266 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 123 flow [2023-08-30 02:38:49,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-08-30 02:38:49,267 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 02:38:49,267 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 123 flow [2023-08-30 02:38:49,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 02:38:49,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:49,267 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:49,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-30 02:38:49,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:49,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash 316837914, now seen corresponding path program 1 times [2023-08-30 02:38:49,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:49,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813466877] [2023-08-30 02:38:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813466877] [2023-08-30 02:38:49,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813466877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:49,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:49,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:49,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010096655] [2023-08-30 02:38:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:49,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:49,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:49,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:49,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 123 flow. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 02:38:49,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:49,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:49,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:50,776 INFO L130 PetriNetUnfolder]: 17214/24347 cut-off events. [2023-08-30 02:38:50,777 INFO L131 PetriNetUnfolder]: For 13763/13763 co-relation queries the response was YES. [2023-08-30 02:38:50,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62073 conditions, 24347 events. 17214/24347 cut-off events. For 13763/13763 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 161982 event pairs, 8064 based on Foata normal form. 0/19319 useless extension candidates. Maximal degree in co-relation 62063. Up to 15695 conditions per place. [2023-08-30 02:38:50,911 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2023-08-30 02:38:50,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 306 flow [2023-08-30 02:38:50,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-08-30 02:38:50,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4899598393574297 [2023-08-30 02:38:50,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-08-30 02:38:50,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-08-30 02:38:50,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:50,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-08-30 02:38:50,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 02:38:50,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:50,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:50,915 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 123 flow. Second operand 3 states and 244 transitions. [2023-08-30 02:38:50,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 306 flow [2023-08-30 02:38:51,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:51,015 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 199 flow [2023-08-30 02:38:51,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=199, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-30 02:38:51,017 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-30 02:38:51,017 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 199 flow [2023-08-30 02:38:51,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 02:38:51,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:51,017 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:51,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-30 02:38:51,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:51,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:51,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1234001769, now seen corresponding path program 1 times [2023-08-30 02:38:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236190830] [2023-08-30 02:38:51,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:51,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:51,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:38:51,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:51,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236190830] [2023-08-30 02:38:51,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236190830] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:51,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:51,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:51,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948252664] [2023-08-30 02:38:51,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:51,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:51,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:51,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:51,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:51,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:51,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 02:38:51,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:51,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:51,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:52,183 INFO L130 PetriNetUnfolder]: 13946/19127 cut-off events. [2023-08-30 02:38:52,183 INFO L131 PetriNetUnfolder]: For 17220/17220 co-relation queries the response was YES. [2023-08-30 02:38:52,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56978 conditions, 19127 events. 13946/19127 cut-off events. For 17220/17220 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 120965 event pairs, 2700 based on Foata normal form. 0/15616 useless extension candidates. Maximal degree in co-relation 56967. Up to 15496 conditions per place. [2023-08-30 02:38:52,279 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-30 02:38:52,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 411 flow [2023-08-30 02:38:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:52,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:52,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 243 transitions. [2023-08-30 02:38:52,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4879518072289157 [2023-08-30 02:38:52,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 243 transitions. [2023-08-30 02:38:52,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 243 transitions. [2023-08-30 02:38:52,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:52,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 243 transitions. [2023-08-30 02:38:52,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:52,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:52,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:52,283 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 199 flow. Second operand 3 states and 243 transitions. [2023-08-30 02:38:52,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 411 flow [2023-08-30 02:38:52,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 381 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:52,367 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 179 flow [2023-08-30 02:38:52,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-30 02:38:52,367 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 02:38:52,368 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 179 flow [2023-08-30 02:38:52,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 02:38:52,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:52,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:52,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-30 02:38:52,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:52,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1232045038, now seen corresponding path program 1 times [2023-08-30 02:38:52,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052991828] [2023-08-30 02:38:52,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:38:52,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:52,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052991828] [2023-08-30 02:38:52,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052991828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:52,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:52,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:52,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78820849] [2023-08-30 02:38:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:52,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:52,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:52,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:52,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:52,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 02:38:52,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:52,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:52,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:53,330 INFO L130 PetriNetUnfolder]: 11269/15577 cut-off events. [2023-08-30 02:38:53,331 INFO L131 PetriNetUnfolder]: For 11490/11490 co-relation queries the response was YES. [2023-08-30 02:38:53,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44882 conditions, 15577 events. 11269/15577 cut-off events. For 11490/11490 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 95987 event pairs, 1895 based on Foata normal form. 0/12813 useless extension candidates. Maximal degree in co-relation 44871. Up to 12576 conditions per place. [2023-08-30 02:38:53,406 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 50 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-30 02:38:53,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 366 flow [2023-08-30 02:38:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:53,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 240 transitions. [2023-08-30 02:38:53,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-08-30 02:38:53,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 240 transitions. [2023-08-30 02:38:53,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 240 transitions. [2023-08-30 02:38:53,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:53,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 240 transitions. [2023-08-30 02:38:53,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:53,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:53,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:53,411 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 179 flow. Second operand 3 states and 240 transitions. [2023-08-30 02:38:53,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 366 flow [2023-08-30 02:38:53,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 55 transitions, 363 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:53,414 INFO L231 Difference]: Finished difference. Result has 44 places, 36 transitions, 177 flow [2023-08-30 02:38:53,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=36} [2023-08-30 02:38:53,414 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 02:38:53,414 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 36 transitions, 177 flow [2023-08-30 02:38:53,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 02:38:53,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:53,415 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:53,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-30 02:38:53,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:53,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:53,415 INFO L85 PathProgramCache]: Analyzing trace with hash -545241432, now seen corresponding path program 1 times [2023-08-30 02:38:53,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:53,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152631713] [2023-08-30 02:38:53,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:53,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:53,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:38:53,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:53,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152631713] [2023-08-30 02:38:53,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152631713] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:53,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:53,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076366799] [2023-08-30 02:38:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:53,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:53,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 36 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 02:38:53,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:53,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:53,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:54,769 INFO L130 PetriNetUnfolder]: 14850/21601 cut-off events. [2023-08-30 02:38:54,769 INFO L131 PetriNetUnfolder]: For 20184/20184 co-relation queries the response was YES. [2023-08-30 02:38:54,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61592 conditions, 21601 events. 14850/21601 cut-off events. For 20184/20184 co-relation queries the response was YES. Maximal size of possible extension queue 1651. Compared 149921 event pairs, 6228 based on Foata normal form. 0/18162 useless extension candidates. Maximal degree in co-relation 61581. Up to 14235 conditions per place. [2023-08-30 02:38:54,866 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 40 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2023-08-30 02:38:54,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 411 flow [2023-08-30 02:38:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:54,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-08-30 02:38:54,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799196787148594 [2023-08-30 02:38:54,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-08-30 02:38:54,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-08-30 02:38:54,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:54,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-08-30 02:38:54,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 02:38:54,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:54,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:54,869 INFO L175 Difference]: Start difference. First operand has 44 places, 36 transitions, 177 flow. Second operand 3 states and 239 transitions. [2023-08-30 02:38:54,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 411 flow [2023-08-30 02:38:54,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 60 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:54,873 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 349 flow [2023-08-30 02:38:54,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-08-30 02:38:54,873 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-30 02:38:54,873 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 349 flow [2023-08-30 02:38:54,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 02:38:54,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:54,874 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-30 02:38:54,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:54,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash 277388428, now seen corresponding path program 1 times [2023-08-30 02:38:54,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:54,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30345863] [2023-08-30 02:38:54,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:54,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:38:54,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:54,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30345863] [2023-08-30 02:38:54,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30345863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:54,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:54,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:54,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739102064] [2023-08-30 02:38:54,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:54,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:54,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:54,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:54,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:54,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:54,929 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 02:38:54,929 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:54,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:54,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:55,893 INFO L130 PetriNetUnfolder]: 11925/16849 cut-off events. [2023-08-30 02:38:55,893 INFO L131 PetriNetUnfolder]: For 28615/28615 co-relation queries the response was YES. [2023-08-30 02:38:55,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59537 conditions, 16849 events. 11925/16849 cut-off events. For 28615/28615 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 110395 event pairs, 2241 based on Foata normal form. 954/15740 useless extension candidates. Maximal degree in co-relation 59525. Up to 13484 conditions per place. [2023-08-30 02:38:56,006 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 64 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-30 02:38:56,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 71 transitions, 621 flow [2023-08-30 02:38:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-30 02:38:56,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759036144578313 [2023-08-30 02:38:56,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-30 02:38:56,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-30 02:38:56,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:56,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-30 02:38:56,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:38:56,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:56,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:56,010 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 349 flow. Second operand 3 states and 237 transitions. [2023-08-30 02:38:56,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 71 transitions, 621 flow [2023-08-30 02:38:56,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 587 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:56,051 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 319 flow [2023-08-30 02:38:56,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2023-08-30 02:38:56,051 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-30 02:38:56,051 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 319 flow [2023-08-30 02:38:56,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states 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 02:38:56,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:56,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:56,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-30 02:38:56,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:56,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:56,053 INFO L85 PathProgramCache]: Analyzing trace with hash 523840496, now seen corresponding path program 1 times [2023-08-30 02:38:56,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:56,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583800232] [2023-08-30 02:38:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:56,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 02:38:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:56,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583800232] [2023-08-30 02:38:56,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583800232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:56,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:56,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284590517] [2023-08-30 02:38:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:56,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:56,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:56,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:56,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 02:38:56,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:56,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:56,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:57,550 INFO L130 PetriNetUnfolder]: 14852/22111 cut-off events. [2023-08-30 02:38:57,550 INFO L131 PetriNetUnfolder]: For 37417/37417 co-relation queries the response was YES. [2023-08-30 02:38:57,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72700 conditions, 22111 events. 14852/22111 cut-off events. For 37417/37417 co-relation queries the response was YES. Maximal size of possible extension queue 1865. Compared 161285 event pairs, 5610 based on Foata normal form. 0/19801 useless extension candidates. Maximal degree in co-relation 72688. Up to 14769 conditions per place. [2023-08-30 02:38:57,664 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 47 selfloop transitions, 29 changer transitions 0/79 dead transitions. [2023-08-30 02:38:57,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 79 transitions, 686 flow [2023-08-30 02:38:57,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-30 02:38:57,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4738955823293173 [2023-08-30 02:38:57,666 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-30 02:38:57,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-30 02:38:57,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:57,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-30 02:38:57,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:57,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:57,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:57,668 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 319 flow. Second operand 3 states and 236 transitions. [2023-08-30 02:38:57,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 79 transitions, 686 flow [2023-08-30 02:38:57,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 79 transitions, 678 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:38:57,680 INFO L231 Difference]: Finished difference. Result has 49 places, 69 transitions, 649 flow [2023-08-30 02:38:57,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=649, PETRI_PLACES=49, PETRI_TRANSITIONS=69} [2023-08-30 02:38:57,680 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2023-08-30 02:38:57,681 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 69 transitions, 649 flow [2023-08-30 02:38:57,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 02:38:57,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:57,681 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-30 02:38:57,681 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:57,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash -940810502, now seen corresponding path program 1 times [2023-08-30 02:38:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116309795] [2023-08-30 02:38:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:57,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 02:38:57,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:57,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116309795] [2023-08-30 02:38:57,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116309795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:57,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:57,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:38:57,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595692138] [2023-08-30 02:38:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:57,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:38:57,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:38:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:38:57,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:57,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 69 transitions, 649 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:57,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:57,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:57,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:38:58,825 INFO L130 PetriNetUnfolder]: 11939/17421 cut-off events. [2023-08-30 02:38:58,825 INFO L131 PetriNetUnfolder]: For 46459/46459 co-relation queries the response was YES. [2023-08-30 02:38:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69796 conditions, 17421 events. 11939/17421 cut-off events. For 46459/46459 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 121219 event pairs, 2639 based on Foata normal form. 1012/17369 useless extension candidates. Maximal degree in co-relation 69783. Up to 13486 conditions per place. [2023-08-30 02:38:58,935 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 86 selfloop transitions, 8 changer transitions 0/97 dead transitions. [2023-08-30 02:38:58,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 1072 flow [2023-08-30 02:38:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:38:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:38:58,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2023-08-30 02:38:58,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46987951807228917 [2023-08-30 02:38:58,936 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 234 transitions. [2023-08-30 02:38:58,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 234 transitions. [2023-08-30 02:38:58,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:38:58,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 234 transitions. [2023-08-30 02:38:58,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:58,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:58,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:38:58,938 INFO L175 Difference]: Start difference. First operand has 49 places, 69 transitions, 649 flow. Second operand 3 states and 234 transitions. [2023-08-30 02:38:58,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 1072 flow [2023-08-30 02:38:58,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 97 transitions, 1014 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:38:58,979 INFO L231 Difference]: Finished difference. Result has 48 places, 68 transitions, 603 flow [2023-08-30 02:38:58,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=603, PETRI_PLACES=48, PETRI_TRANSITIONS=68} [2023-08-30 02:38:58,979 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2023-08-30 02:38:58,979 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 68 transitions, 603 flow [2023-08-30 02:38:58,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:38:58,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:38:58,979 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:38:58,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-30 02:38:58,980 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:38:58,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:38:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1718728697, now seen corresponding path program 1 times [2023-08-30 02:38:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:38:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654470943] [2023-08-30 02:38:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:38:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:38:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:38:59,051 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 02:38:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:38:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654470943] [2023-08-30 02:38:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654470943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:38:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:38:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:38:59,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398719735] [2023-08-30 02:38:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:38:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:38:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:38:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:38:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:38:59,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:38:59,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 68 transitions, 603 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 02:38:59,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:38:59,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:38:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:00,554 INFO L130 PetriNetUnfolder]: 13634/21204 cut-off events. [2023-08-30 02:39:00,554 INFO L131 PetriNetUnfolder]: For 53657/53657 co-relation queries the response was YES. [2023-08-30 02:39:00,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79178 conditions, 21204 events. 13634/21204 cut-off events. For 53657/53657 co-relation queries the response was YES. Maximal size of possible extension queue 1973. Compared 163578 event pairs, 5130 based on Foata normal form. 0/20302 useless extension candidates. Maximal degree in co-relation 79165. Up to 14771 conditions per place. [2023-08-30 02:39:00,707 INFO L137 encePairwiseOnDemand]: 159/166 looper letters, 58 selfloop transitions, 49 changer transitions 0/110 dead transitions. [2023-08-30 02:39:00,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 110 transitions, 1213 flow [2023-08-30 02:39:00,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-08-30 02:39:00,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678714859437751 [2023-08-30 02:39:00,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-08-30 02:39:00,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-08-30 02:39:00,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:00,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-08-30 02:39:00,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:39:00,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:39:00,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:39:00,710 INFO L175 Difference]: Start difference. First operand has 48 places, 68 transitions, 603 flow. Second operand 3 states and 233 transitions. [2023-08-30 02:39:00,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 110 transitions, 1213 flow [2023-08-30 02:39:00,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 110 transitions, 1197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:39:00,737 INFO L231 Difference]: Finished difference. Result has 51 places, 101 transitions, 1213 flow [2023-08-30 02:39:00,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1213, PETRI_PLACES=51, PETRI_TRANSITIONS=101} [2023-08-30 02:39:00,738 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2023-08-30 02:39:00,738 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 101 transitions, 1213 flow [2023-08-30 02:39:00,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 02:39:00,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:00,738 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:00,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-30 02:39:00,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:39:00,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1740985093, now seen corresponding path program 1 times [2023-08-30 02:39:00,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481578345] [2023-08-30 02:39:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:00,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 02:39:00,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:00,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481578345] [2023-08-30 02:39:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481578345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:00,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:00,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:39:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756037885] [2023-08-30 02:39:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:39:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:39:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:39:00,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 166 [2023-08-30 02:39:00,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 101 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 02:39:00,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:00,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 166 [2023-08-30 02:39:00,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:02,151 INFO L130 PetriNetUnfolder]: 11331/18039 cut-off events. [2023-08-30 02:39:02,151 INFO L131 PetriNetUnfolder]: For 68413/68413 co-relation queries the response was YES. [2023-08-30 02:39:02,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77883 conditions, 18039 events. 11331/18039 cut-off events. For 68413/68413 co-relation queries the response was YES. Maximal size of possible extension queue 1637. Compared 140868 event pairs, 3585 based on Foata normal form. 862/18861 useless extension candidates. Maximal degree in co-relation 77869. Up to 10940 conditions per place. [2023-08-30 02:39:02,250 INFO L137 encePairwiseOnDemand]: 164/166 looper letters, 118 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2023-08-30 02:39:02,250 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 137 transitions, 1875 flow [2023-08-30 02:39:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:02,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-30 02:39:02,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463855421686747 [2023-08-30 02:39:02,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-30 02:39:02,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-30 02:39:02,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:02,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-30 02:39:02,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:02,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:39:02,253 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 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 02:39:02,253 INFO L175 Difference]: Start difference. First operand has 51 places, 101 transitions, 1213 flow. Second operand 3 states and 231 transitions. [2023-08-30 02:39:02,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 137 transitions, 1875 flow [2023-08-30 02:39:02,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 137 transitions, 1777 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:39:02,298 INFO L231 Difference]: Finished difference. Result has 50 places, 100 transitions, 1143 flow [2023-08-30 02:39:02,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1143, PETRI_PLACES=50, PETRI_TRANSITIONS=100} [2023-08-30 02:39:02,299 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2023-08-30 02:39:02,299 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 100 transitions, 1143 flow [2023-08-30 02:39:02,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 02:39:02,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:02,299 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:02,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-30 02:39:02,299 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-30 02:39:02,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1867953160, now seen corresponding path program 1 times [2023-08-30 02:39:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:02,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16441461] [2023-08-30 02:39:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:39:02,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:39:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:39:02,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:39:02,327 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:39:02,327 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-08-30 02:39:02,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2023-08-30 02:39:02,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-30 02:39:02,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-30 02:39:02,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 10 remaining) [2023-08-30 02:39:02,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-30 02:39:02,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-30 02:39:02,328 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 10 remaining) [2023-08-30 02:39:02,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 10 remaining) [2023-08-30 02:39:02,329 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-30 02:39:02,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-30 02:39:02,329 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:02,329 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:39:02,330 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-30 02:39:02,345 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:39:02,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 272 flow [2023-08-30 02:39:02,359 INFO L130 PetriNetUnfolder]: 7/206 cut-off events. [2023-08-30 02:39:02,359 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 02:39:02,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 206 events. 7/206 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 520 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 196. Up to 14 conditions per place. [2023-08-30 02:39:02,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 106 transitions, 272 flow [2023-08-30 02:39:02,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 106 transitions, 272 flow [2023-08-30 02:39:02,361 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:39:02,361 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 106 transitions, 272 flow [2023-08-30 02:39:02,361 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 106 transitions, 272 flow [2023-08-30 02:39:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 106 transitions, 272 flow [2023-08-30 02:39:02,374 INFO L130 PetriNetUnfolder]: 7/206 cut-off events. [2023-08-30 02:39:02,374 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-30 02:39:02,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 206 events. 7/206 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 520 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 196. Up to 14 conditions per place. [2023-08-30 02:39:02,379 INFO L119 LiptonReduction]: Number of co-enabled transitions 6336 [2023-08-30 02:39:03,743 INFO L134 LiptonReduction]: Checked pairs total: 9000 [2023-08-30 02:39:03,743 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-30 02:39:03,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:39:03,744 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:39:03,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-30 02:39:03,745 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 02:39:03,745 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:39:03,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:03,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:39:03,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:03,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:03,745 INFO L85 PathProgramCache]: Analyzing trace with hash 31699, now seen corresponding path program 1 times [2023-08-30 02:39:03,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:03,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131669211] [2023-08-30 02:39:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:03,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:03,752 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 02:39:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131669211] [2023-08-30 02:39:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131669211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:39:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720710149] [2023-08-30 02:39:03,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:03,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:39:03,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:39:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:39:03,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2023-08-30 02:39:03,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 02:39:03,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:03,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2023-08-30 02:39:03,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:10,238 INFO L130 PetriNetUnfolder]: 88749/114347 cut-off events. [2023-08-30 02:39:10,238 INFO L131 PetriNetUnfolder]: For 39518/39518 co-relation queries the response was YES. [2023-08-30 02:39:10,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240194 conditions, 114347 events. 88749/114347 cut-off events. For 39518/39518 co-relation queries the response was YES. Maximal size of possible extension queue 6202. Compared 701734 event pairs, 88749 based on Foata normal form. 0/71112 useless extension candidates. Maximal degree in co-relation 51855. Up to 110594 conditions per place. [2023-08-30 02:39:10,883 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 28 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-08-30 02:39:10,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 178 flow [2023-08-30 02:39:11,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 02:39:11,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 02:39:11,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 202 transitions. [2023-08-30 02:39:11,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2023-08-30 02:39:11,044 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 202 transitions. [2023-08-30 02:39:11,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 202 transitions. [2023-08-30 02:39:11,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:11,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 202 transitions. [2023-08-30 02:39:11,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 02:39:11,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 02:39:11,046 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states 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 02:39:11,046 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 126 flow. Second operand 2 states and 202 transitions. [2023-08-30 02:39:11,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 178 flow [2023-08-30 02:39:11,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 31 transitions, 148 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-08-30 02:39:11,084 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 92 flow [2023-08-30 02:39:11,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2023-08-30 02:39:11,085 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -1 predicate places. [2023-08-30 02:39:11,085 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 92 flow [2023-08-30 02:39:11,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 87.0) internal successors, (174), 2 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 02:39:11,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:11,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:39:11,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-30 02:39:11,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:11,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash 31687, now seen corresponding path program 1 times [2023-08-30 02:39:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339812779] [2023-08-30 02:39:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:11,110 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 02:39:11,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:11,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339812779] [2023-08-30 02:39:11,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339812779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:11,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:11,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:39:11,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725771311] [2023-08-30 02:39:11,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:11,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:39:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:39:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:39:11,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 186 [2023-08-30 02:39:11,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:11,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:11,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 186 [2023-08-30 02:39:11,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:15,603 INFO L130 PetriNetUnfolder]: 65538/85675 cut-off events. [2023-08-30 02:39:15,603 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-08-30 02:39:15,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172723 conditions, 85675 events. 65538/85675 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 4418. Compared 524052 event pairs, 65538 based on Foata normal form. 0/55638 useless extension candidates. Maximal degree in co-relation 172714. Up to 81921 conditions per place. [2023-08-30 02:39:16,031 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 02:39:16,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 144 flow [2023-08-30 02:39:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-30 02:39:16,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48566308243727596 [2023-08-30 02:39:16,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-30 02:39:16,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-30 02:39:16,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:16,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-30 02:39:16,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 02:39:16,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:16,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:16,034 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 92 flow. Second operand 3 states and 271 transitions. [2023-08-30 02:39:16,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 144 flow [2023-08-30 02:39:16,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 144 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 02:39:16,035 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 92 flow [2023-08-30 02:39:16,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-08-30 02:39:16,036 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-08-30 02:39:16,036 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 92 flow [2023-08-30 02:39:16,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:16,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:16,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:39:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-30 02:39:16,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:16,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 31688, now seen corresponding path program 1 times [2023-08-30 02:39:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:16,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296036304] [2023-08-30 02:39:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:16,056 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 02:39:16,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296036304] [2023-08-30 02:39:16,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296036304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:16,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:16,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:39:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725387125] [2023-08-30 02:39:16,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:16,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:39:16,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:39:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:39:16,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 186 [2023-08-30 02:39:16,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:39:16,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:16,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 186 [2023-08-30 02:39:16,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:19,039 INFO L130 PetriNetUnfolder]: 42327/57003 cut-off events. [2023-08-30 02:39:19,039 INFO L131 PetriNetUnfolder]: For 3410/3410 co-relation queries the response was YES. [2023-08-30 02:39:19,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115381 conditions, 57003 events. 42327/57003 cut-off events. For 3410/3410 co-relation queries the response was YES. Maximal size of possible extension queue 2746. Compared 349332 event pairs, 42327 based on Foata normal form. 0/40164 useless extension candidates. Maximal degree in co-relation 115371. Up to 53249 conditions per place. [2023-08-30 02:39:19,326 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 25 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 02:39:19,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 142 flow [2023-08-30 02:39:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:19,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-08-30 02:39:19,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2023-08-30 02:39:19,328 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-08-30 02:39:19,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-08-30 02:39:19,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:19,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-08-30 02:39:19,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 02:39:19,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:19,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:19,330 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 92 flow. Second operand 3 states and 267 transitions. [2023-08-30 02:39:19,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 142 flow [2023-08-30 02:39:19,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 29 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:39:19,332 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 91 flow [2023-08-30 02:39:19,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-08-30 02:39:19,333 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 0 predicate places. [2023-08-30 02:39:19,333 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 91 flow [2023-08-30 02:39:19,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 02:39:19,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:19,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 02:39:19,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-30 02:39:19,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:19,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 944919391, now seen corresponding path program 1 times [2023-08-30 02:39:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:19,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774956524] [2023-08-30 02:39:19,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:19,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:19,348 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 02:39:19,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:19,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774956524] [2023-08-30 02:39:19,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774956524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:19,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:19,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:39:19,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145939206] [2023-08-30 02:39:19,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:19,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:39:19,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:19,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:39:19,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:39:19,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:19,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 91 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:39:19,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:19,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:19,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:23,767 INFO L130 PetriNetUnfolder]: 62014/82081 cut-off events. [2023-08-30 02:39:23,768 INFO L131 PetriNetUnfolder]: For 5435/5435 co-relation queries the response was YES. [2023-08-30 02:39:24,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167569 conditions, 82081 events. 62014/82081 cut-off events. For 5435/5435 co-relation queries the response was YES. Maximal size of possible extension queue 4290. Compared 523659 event pairs, 35952 based on Foata normal form. 0/59906 useless extension candidates. Maximal degree in co-relation 167559. Up to 54027 conditions per place. [2023-08-30 02:39:24,477 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 41 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2023-08-30 02:39:24,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 256 flow [2023-08-30 02:39:24,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:24,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-08-30 02:39:24,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496415770609319 [2023-08-30 02:39:24,479 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-08-30 02:39:24,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-08-30 02:39:24,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:24,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-08-30 02:39:24,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 02:39:24,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:24,481 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:24,481 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 91 flow. Second operand 3 states and 277 transitions. [2023-08-30 02:39:24,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 256 flow [2023-08-30 02:39:24,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:39:24,491 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 144 flow [2023-08-30 02:39:24,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-30 02:39:24,491 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-08-30 02:39:24,491 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 144 flow [2023-08-30 02:39:24,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states 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 02:39:24,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:24,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:24,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-30 02:39:24,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:24,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1359636485, now seen corresponding path program 1 times [2023-08-30 02:39:24,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:24,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629050002] [2023-08-30 02:39:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:24,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:39:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629050002] [2023-08-30 02:39:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629050002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:24,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:24,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:39:24,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421896277] [2023-08-30 02:39:24,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:24,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:39:24,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:24,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:39:24,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:39:24,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:24,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:24,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:24,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:24,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:31,375 INFO L130 PetriNetUnfolder]: 87642/116859 cut-off events. [2023-08-30 02:39:31,375 INFO L131 PetriNetUnfolder]: For 63799/63799 co-relation queries the response was YES. [2023-08-30 02:39:31,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296137 conditions, 116859 events. 87642/116859 cut-off events. For 63799/63799 co-relation queries the response was YES. Maximal size of possible extension queue 6344. Compared 794902 event pairs, 43070 based on Foata normal form. 0/90803 useless extension candidates. Maximal degree in co-relation 296126. Up to 77979 conditions per place. [2023-08-30 02:39:32,209 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 46 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2023-08-30 02:39:32,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 368 flow [2023-08-30 02:39:32,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-08-30 02:39:32,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946236559139785 [2023-08-30 02:39:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-08-30 02:39:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-08-30 02:39:32,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:32,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-08-30 02:39:32,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states 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 02:39:32,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:32,212 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:32,212 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 144 flow. Second operand 3 states and 276 transitions. [2023-08-30 02:39:32,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 368 flow [2023-08-30 02:39:33,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:39:33,677 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 238 flow [2023-08-30 02:39:33,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-30 02:39:33,677 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-30 02:39:33,677 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 238 flow [2023-08-30 02:39:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:33,678 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-30 02:39:33,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:33,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash -798573380, now seen corresponding path program 1 times [2023-08-30 02:39:33,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:33,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564631972] [2023-08-30 02:39:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 02:39:33,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:33,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564631972] [2023-08-30 02:39:33,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564631972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:33,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:33,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:39:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59966795] [2023-08-30 02:39:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:33,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:39:33,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:39:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:39:33,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:33,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 02:39:33,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:33,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:33,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:39,117 INFO L130 PetriNetUnfolder]: 71236/92293 cut-off events. [2023-08-30 02:39:39,117 INFO L131 PetriNetUnfolder]: For 80427/80427 co-relation queries the response was YES. [2023-08-30 02:39:39,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272370 conditions, 92293 events. 71236/92293 cut-off events. For 80427/80427 co-relation queries the response was YES. Maximal size of possible extension queue 5175. Compared 591507 event pairs, 13780 based on Foata normal form. 0/73301 useless extension candidates. Maximal degree in co-relation 272358. Up to 74462 conditions per place. [2023-08-30 02:39:39,746 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 65 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-30 02:39:39,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 499 flow [2023-08-30 02:39:39,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-30 02:39:39,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492831541218638 [2023-08-30 02:39:39,747 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-30 02:39:39,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-30 02:39:39,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:39,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-30 02:39:39,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 02:39:39,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:39,749 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:39,749 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 238 flow. Second operand 3 states and 275 transitions. [2023-08-30 02:39:39,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 499 flow [2023-08-30 02:39:40,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 463 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:39:40,794 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 214 flow [2023-08-30 02:39:40,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2023-08-30 02:39:40,794 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-30 02:39:40,794 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 214 flow [2023-08-30 02:39:40,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 02:39:40,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:40,795 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:40,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-30 02:39:40,795 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:40,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:40,795 INFO L85 PathProgramCache]: Analyzing trace with hash -800938326, now seen corresponding path program 1 times [2023-08-30 02:39:40,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:40,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430920068] [2023-08-30 02:39:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:40,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:40,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 02:39:40,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:40,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430920068] [2023-08-30 02:39:40,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430920068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:40,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:40,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:39:40,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496934912] [2023-08-30 02:39:40,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:40,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:39:40,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:39:40,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:39:40,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:40,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 02:39:40,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:40,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:40,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:45,167 INFO L130 PetriNetUnfolder]: 57777/75233 cut-off events. [2023-08-30 02:39:45,167 INFO L131 PetriNetUnfolder]: For 53296/53296 co-relation queries the response was YES. [2023-08-30 02:39:45,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214575 conditions, 75233 events. 57777/75233 cut-off events. For 53296/53296 co-relation queries the response was YES. Maximal size of possible extension queue 4281. Compared 471775 event pairs, 9807 based on Foata normal form. 0/60029 useless extension candidates. Maximal degree in co-relation 214563. Up to 60562 conditions per place. [2023-08-30 02:39:45,713 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 62 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-08-30 02:39:45,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 448 flow [2023-08-30 02:39:45,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:45,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-30 02:39:45,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874551971326165 [2023-08-30 02:39:45,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-30 02:39:45,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-30 02:39:45,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:45,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-30 02:39:45,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 02:39:45,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:45,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:45,717 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 214 flow. Second operand 3 states and 272 transitions. [2023-08-30 02:39:45,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 448 flow [2023-08-30 02:39:45,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 445 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:39:45,731 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 212 flow [2023-08-30 02:39:45,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=48, 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=212, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-08-30 02:39:45,731 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-30 02:39:45,732 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 212 flow [2023-08-30 02:39:45,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 02:39:45,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:45,732 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:45,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-30 02:39:45,732 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:45,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1879346070, now seen corresponding path program 1 times [2023-08-30 02:39:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:45,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981570751] [2023-08-30 02:39:45,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:45,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:39:45,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:45,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981570751] [2023-08-30 02:39:45,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981570751] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:45,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:45,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:39:45,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812207336] [2023-08-30 02:39:45,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:45,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:39:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:45,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:39:45,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:39:45,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:45,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 02:39:45,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:45,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:45,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:52,226 INFO L130 PetriNetUnfolder]: 78368/106611 cut-off events. [2023-08-30 02:39:52,226 INFO L131 PetriNetUnfolder]: For 99801/99801 co-relation queries the response was YES. [2023-08-30 02:39:52,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301474 conditions, 106611 events. 78368/106611 cut-off events. For 99801/99801 co-relation queries the response was YES. Maximal size of possible extension queue 6232. Compared 756589 event pairs, 34508 based on Foata normal form. 0/86986 useless extension candidates. Maximal degree in co-relation 301462. Up to 72725 conditions per place. [2023-08-30 02:39:53,031 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 50 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2023-08-30 02:39:53,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 509 flow [2023-08-30 02:39:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-30 02:39:53,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48566308243727596 [2023-08-30 02:39:53,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-30 02:39:53,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-30 02:39:53,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:53,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-30 02:39:53,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states 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 02:39:53,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:53,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:53,035 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 212 flow. Second operand 3 states and 271 transitions. [2023-08-30 02:39:53,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 509 flow [2023-08-30 02:39:53,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 74 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:39:53,062 INFO L231 Difference]: Finished difference. Result has 53 places, 60 transitions, 432 flow [2023-08-30 02:39:53,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=53, PETRI_TRANSITIONS=60} [2023-08-30 02:39:53,062 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2023-08-30 02:39:53,062 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 60 transitions, 432 flow [2023-08-30 02:39:53,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 02:39:53,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:53,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:53,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-30 02:39:53,063 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:53,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:53,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1869810045, now seen corresponding path program 1 times [2023-08-30 02:39:53,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:53,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778275837] [2023-08-30 02:39:53,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:53,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:53,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-30 02:39:53,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:53,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778275837] [2023-08-30 02:39:53,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778275837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:53,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:53,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:39:53,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730642994] [2023-08-30 02:39:53,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:53,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:39:53,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:53,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:39:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:39:53,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:53,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 60 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 02:39:53,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:53,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:53,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:39:58,553 INFO L130 PetriNetUnfolder]: 63123/83371 cut-off events. [2023-08-30 02:39:58,553 INFO L131 PetriNetUnfolder]: For 140677/140677 co-relation queries the response was YES. [2023-08-30 02:39:58,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290092 conditions, 83371 events. 63123/83371 cut-off events. For 140677/140677 co-relation queries the response was YES. Maximal size of possible extension queue 5044. Compared 552567 event pairs, 11449 based on Foata normal form. 4008/74526 useless extension candidates. Maximal degree in co-relation 290079. Up to 66634 conditions per place. [2023-08-30 02:39:59,214 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 82 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-30 02:39:59,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 89 transitions, 783 flow [2023-08-30 02:39:59,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:39:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:39:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-30 02:39:59,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.482078853046595 [2023-08-30 02:39:59,215 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-30 02:39:59,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-30 02:39:59,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:39:59,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-30 02:39:59,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states 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 02:39:59,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:59,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:39:59,216 INFO L175 Difference]: Start difference. First operand has 53 places, 60 transitions, 432 flow. Second operand 3 states and 269 transitions. [2023-08-30 02:39:59,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 89 transitions, 783 flow [2023-08-30 02:39:59,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 741 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:39:59,487 INFO L231 Difference]: Finished difference. Result has 52 places, 59 transitions, 394 flow [2023-08-30 02:39:59,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=394, PETRI_PLACES=52, PETRI_TRANSITIONS=59} [2023-08-30 02:39:59,488 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 6 predicate places. [2023-08-30 02:39:59,488 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 59 transitions, 394 flow [2023-08-30 02:39:59,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 02:39:59,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:39:59,489 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:39:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-30 02:39:59,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:39:59,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:39:59,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2067084714, now seen corresponding path program 1 times [2023-08-30 02:39:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:39:59,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649474467] [2023-08-30 02:39:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:39:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:39:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:39:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 02:39:59,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:39:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649474467] [2023-08-30 02:39:59,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649474467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:39:59,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:39:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:39:59,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070118688] [2023-08-30 02:39:59,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:39:59,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:39:59,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:39:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:39:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:39:59,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:39:59,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 59 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:39:59,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:39:59,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:39:59,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:06,939 INFO L130 PetriNetUnfolder]: 82894/114621 cut-off events. [2023-08-30 02:40:06,939 INFO L131 PetriNetUnfolder]: For 202351/202351 co-relation queries the response was YES. [2023-08-30 02:40:07,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372686 conditions, 114621 events. 82894/114621 cut-off events. For 202351/202351 co-relation queries the response was YES. Maximal size of possible extension queue 7139. Compared 852311 event pairs, 32594 based on Foata normal form. 0/98741 useless extension candidates. Maximal degree in co-relation 372673. Up to 78927 conditions per place. [2023-08-30 02:40:08,195 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 61 selfloop transitions, 37 changer transitions 0/101 dead transitions. [2023-08-30 02:40:08,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 101 transitions, 880 flow [2023-08-30 02:40:08,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:40:08,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:40:08,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-30 02:40:08,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48028673835125446 [2023-08-30 02:40:08,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-30 02:40:08,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-30 02:40:08,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:08,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-30 02:40:08,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 02:40:08,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:08,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:08,197 INFO L175 Difference]: Start difference. First operand has 52 places, 59 transitions, 394 flow. Second operand 3 states and 268 transitions. [2023-08-30 02:40:08,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 101 transitions, 880 flow [2023-08-30 02:40:08,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 101 transitions, 872 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:40:08,227 INFO L231 Difference]: Finished difference. Result has 55 places, 88 transitions, 836 flow [2023-08-30 02:40:08,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=836, PETRI_PLACES=55, PETRI_TRANSITIONS=88} [2023-08-30 02:40:08,228 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-08-30 02:40:08,228 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 88 transitions, 836 flow [2023-08-30 02:40:08,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:08,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:08,228 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:08,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-30 02:40:08,229 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:40:08,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:08,229 INFO L85 PathProgramCache]: Analyzing trace with hash -344879078, now seen corresponding path program 1 times [2023-08-30 02:40:08,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:08,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626110970] [2023-08-30 02:40:08,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:08,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-30 02:40:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626110970] [2023-08-30 02:40:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626110970] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:08,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:08,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:40:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444609214] [2023-08-30 02:40:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:08,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:40:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:40:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:40:08,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:40:08,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 88 transitions, 836 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 02:40:08,269 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:08,269 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:40:08,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:14,970 INFO L130 PetriNetUnfolder]: 66491/89377 cut-off events. [2023-08-30 02:40:14,970 INFO L131 PetriNetUnfolder]: For 243725/243725 co-relation queries the response was YES. [2023-08-30 02:40:15,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353395 conditions, 89377 events. 66491/89377 cut-off events. For 243725/243725 co-relation queries the response was YES. Maximal size of possible extension queue 5781. Compared 623983 event pairs, 13367 based on Foata normal form. 4542/84597 useless extension candidates. Maximal degree in co-relation 353381. Up to 70760 conditions per place. [2023-08-30 02:40:16,061 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 117 selfloop transitions, 8 changer transitions 0/128 dead transitions. [2023-08-30 02:40:16,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 128 transitions, 1422 flow [2023-08-30 02:40:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:40:16,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:40:16,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 266 transitions. [2023-08-30 02:40:16,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767025089605735 [2023-08-30 02:40:16,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 266 transitions. [2023-08-30 02:40:16,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 266 transitions. [2023-08-30 02:40:16,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:16,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 266 transitions. [2023-08-30 02:40:16,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.66666666666667) internal successors, (266), 3 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:16,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:16,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:16,066 INFO L175 Difference]: Start difference. First operand has 55 places, 88 transitions, 836 flow. Second operand 3 states and 266 transitions. [2023-08-30 02:40:16,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 128 transitions, 1422 flow [2023-08-30 02:40:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 128 transitions, 1348 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:40:16,488 INFO L231 Difference]: Finished difference. Result has 54 places, 87 transitions, 774 flow [2023-08-30 02:40:16,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=774, PETRI_PLACES=54, PETRI_TRANSITIONS=87} [2023-08-30 02:40:16,488 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 8 predicate places. [2023-08-30 02:40:16,488 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 87 transitions, 774 flow [2023-08-30 02:40:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 02:40:16,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:16,488 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-30 02:40:16,489 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:40:16,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -762765639, now seen corresponding path program 1 times [2023-08-30 02:40:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:16,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433879966] [2023-08-30 02:40:16,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:16,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 02:40:16,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:16,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433879966] [2023-08-30 02:40:16,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433879966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:16,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:16,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:40:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888060128] [2023-08-30 02:40:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:16,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:40:16,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:16,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:40:16,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:40:16,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:40:16,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 87 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:40:16,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:16,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:40:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:24,975 INFO L130 PetriNetUnfolder]: 83744/117939 cut-off events. [2023-08-30 02:40:24,975 INFO L131 PetriNetUnfolder]: For 338138/338138 co-relation queries the response was YES. [2023-08-30 02:40:25,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437270 conditions, 117939 events. 83744/117939 cut-off events. For 338138/338138 co-relation queries the response was YES. Maximal size of possible extension queue 7940. Compared 916294 event pairs, 30074 based on Foata normal form. 0/107390 useless extension candidates. Maximal degree in co-relation 437256. Up to 82253 conditions per place. [2023-08-30 02:40:26,071 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 80 selfloop transitions, 65 changer transitions 0/148 dead transitions. [2023-08-30 02:40:26,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 148 transitions, 1631 flow [2023-08-30 02:40:26,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:40:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:40:26,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-08-30 02:40:26,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47491039426523296 [2023-08-30 02:40:26,073 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-08-30 02:40:26,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-08-30 02:40:26,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:26,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-08-30 02:40:26,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:26,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:26,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:26,075 INFO L175 Difference]: Start difference. First operand has 54 places, 87 transitions, 774 flow. Second operand 3 states and 265 transitions. [2023-08-30 02:40:26,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 148 transitions, 1631 flow [2023-08-30 02:40:26,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 148 transitions, 1615 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:40:26,229 INFO L231 Difference]: Finished difference. Result has 57 places, 136 transitions, 1640 flow [2023-08-30 02:40:26,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1640, PETRI_PLACES=57, PETRI_TRANSITIONS=136} [2023-08-30 02:40:26,229 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2023-08-30 02:40:26,229 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 136 transitions, 1640 flow [2023-08-30 02:40:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 02:40:26,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:26,230 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:26,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-30 02:40:26,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:40:26,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:26,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2124073525, now seen corresponding path program 1 times [2023-08-30 02:40:26,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:26,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735171969] [2023-08-30 02:40:26,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:26,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-08-30 02:40:26,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735171969] [2023-08-30 02:40:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735171969] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:40:26,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041814513] [2023-08-30 02:40:26,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:26,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:40:26,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:40:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:40:26,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:40:26,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 136 transitions, 1640 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 02:40:26,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:26,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:40:26,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:33,603 INFO L130 PetriNetUnfolder]: 67349/92869 cut-off events. [2023-08-30 02:40:33,603 INFO L131 PetriNetUnfolder]: For 378525/378525 co-relation queries the response was YES. [2023-08-30 02:40:34,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412578 conditions, 92869 events. 67349/92869 cut-off events. For 378525/378525 co-relation queries the response was YES. Maximal size of possible extension queue 6428. Compared 685687 event pairs, 15691 based on Foata normal form. 4796/92936 useless extension candidates. Maximal degree in co-relation 412563. Up to 70802 conditions per place. [2023-08-30 02:40:34,702 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 175 selfloop transitions, 16 changer transitions 0/194 dead transitions. [2023-08-30 02:40:34,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 194 transitions, 2659 flow [2023-08-30 02:40:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:40:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:40:34,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2023-08-30 02:40:34,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471326164874552 [2023-08-30 02:40:34,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2023-08-30 02:40:34,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2023-08-30 02:40:34,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:34,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2023-08-30 02:40:34,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states 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 02:40:34,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:34,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:34,705 INFO L175 Difference]: Start difference. First operand has 57 places, 136 transitions, 1640 flow. Second operand 3 states and 263 transitions. [2023-08-30 02:40:34,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 194 transitions, 2659 flow [2023-08-30 02:40:35,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 194 transitions, 2529 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:40:35,254 INFO L231 Difference]: Finished difference. Result has 56 places, 135 transitions, 1538 flow [2023-08-30 02:40:35,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1538, PETRI_PLACES=56, PETRI_TRANSITIONS=135} [2023-08-30 02:40:35,254 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-08-30 02:40:35,255 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 135 transitions, 1538 flow [2023-08-30 02:40:35,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 02:40:35,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:35,255 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:35,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-30 02:40:35,255 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:40:35,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 432356703, now seen corresponding path program 1 times [2023-08-30 02:40:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126861311] [2023-08-30 02:40:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:35,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-08-30 02:40:35,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:35,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126861311] [2023-08-30 02:40:35,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126861311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:35,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:35,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 02:40:35,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63748713] [2023-08-30 02:40:35,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:35,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 02:40:35,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:35,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 02:40:35,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 02:40:35,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:40:35,289 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 135 transitions, 1538 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:35,289 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:35,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:40:35,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:44,534 INFO L130 PetriNetUnfolder]: 78886/114494 cut-off events. [2023-08-30 02:40:44,534 INFO L131 PetriNetUnfolder]: For 460187/460187 co-relation queries the response was YES. [2023-08-30 02:40:45,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478506 conditions, 114494 events. 78886/114494 cut-off events. For 460187/460187 co-relation queries the response was YES. Maximal size of possible extension queue 8549. Compared 937445 event pairs, 27980 based on Foata normal form. 0/110251 useless extension candidates. Maximal degree in co-relation 478491. Up to 83371 conditions per place. [2023-08-30 02:40:45,904 INFO L137 encePairwiseOnDemand]: 178/186 looper letters, 111 selfloop transitions, 113 changer transitions 0/227 dead transitions. [2023-08-30 02:40:45,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 227 transitions, 3086 flow [2023-08-30 02:40:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:40:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:40:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 262 transitions. [2023-08-30 02:40:45,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46953405017921146 [2023-08-30 02:40:45,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 262 transitions. [2023-08-30 02:40:45,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 262 transitions. [2023-08-30 02:40:45,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:45,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 262 transitions. [2023-08-30 02:40:45,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 02:40:45,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:45,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:45,908 INFO L175 Difference]: Start difference. First operand has 56 places, 135 transitions, 1538 flow. Second operand 3 states and 262 transitions. [2023-08-30 02:40:45,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 227 transitions, 3086 flow [2023-08-30 02:40:46,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 227 transitions, 3054 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 02:40:46,406 INFO L231 Difference]: Finished difference. Result has 59 places, 216 transitions, 3180 flow [2023-08-30 02:40:46,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1522, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3180, PETRI_PLACES=59, PETRI_TRANSITIONS=216} [2023-08-30 02:40:46,406 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 13 predicate places. [2023-08-30 02:40:46,406 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 216 transitions, 3180 flow [2023-08-30 02:40:46,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 02:40:46,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:46,406 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:46,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-30 02:40:46,407 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:40:46,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash 518161123, now seen corresponding path program 1 times [2023-08-30 02:40:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:46,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303751556] [2023-08-30 02:40:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:46,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-08-30 02:40:46,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303751556] [2023-08-30 02:40:46,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303751556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:46,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:46,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 02:40:46,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122683095] [2023-08-30 02:40:46,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:46,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 02:40:46,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:46,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 02:40:46,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 02:40:46,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 186 [2023-08-30 02:40:46,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 216 transitions, 3180 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 02:40:46,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:46,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 186 [2023-08-30 02:40:46,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 02:40:55,073 INFO L130 PetriNetUnfolder]: 65645/97131 cut-off events. [2023-08-30 02:40:55,073 INFO L131 PetriNetUnfolder]: For 544589/544589 co-relation queries the response was YES. [2023-08-30 02:40:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463009 conditions, 97131 events. 65645/97131 cut-off events. For 544589/544589 co-relation queries the response was YES. Maximal size of possible extension queue 7103. Compared 808856 event pairs, 20879 based on Foata normal form. 4122/101132 useless extension candidates. Maximal degree in co-relation 462993. Up to 58024 conditions per place. [2023-08-30 02:40:56,006 INFO L137 encePairwiseOnDemand]: 184/186 looper letters, 266 selfloop transitions, 32 changer transitions 0/301 dead transitions. [2023-08-30 02:40:56,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 301 transitions, 4939 flow [2023-08-30 02:40:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 02:40:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 02:40:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-08-30 02:40:56,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659498207885305 [2023-08-30 02:40:56,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-08-30 02:40:56,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-08-30 02:40:56,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 02:40:56,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-08-30 02:40:56,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 02:40:56,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:56,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states 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 02:40:56,010 INFO L175 Difference]: Start difference. First operand has 59 places, 216 transitions, 3180 flow. Second operand 3 states and 260 transitions. [2023-08-30 02:40:56,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 301 transitions, 4939 flow [2023-08-30 02:40:58,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 301 transitions, 4713 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 02:40:58,121 INFO L231 Difference]: Finished difference. Result has 58 places, 215 transitions, 3014 flow [2023-08-30 02:40:58,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2950, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3014, PETRI_PLACES=58, PETRI_TRANSITIONS=215} [2023-08-30 02:40:58,121 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2023-08-30 02:40:58,122 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 215 transitions, 3014 flow [2023-08-30 02:40:58,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 02:40:58,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:58,122 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:58,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-30 02:40:58,122 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-30 02:40:58,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1121465247, now seen corresponding path program 1 times [2023-08-30 02:40:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:58,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557122464] [2023-08-30 02:40:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:40:58,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 02:40:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 02:40:58,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 02:40:58,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 02:40:58,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2023-08-30 02:40:58,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 11 remaining) [2023-08-30 02:40:58,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-30 02:40:58,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (6 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 11 remaining) [2023-08-30 02:40:58,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 11 remaining) [2023-08-30 02:40:58,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-30 02:40:58,145 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 02:40:58,145 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-30 02:40:58,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-30 02:40:58,164 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 02:40:58,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 118 transitions, 313 flow [2023-08-30 02:40:58,177 INFO L130 PetriNetUnfolder]: 8/235 cut-off events. [2023-08-30 02:40:58,177 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 02:40:58,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 235 events. 8/235 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 627 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 232. Up to 16 conditions per place. [2023-08-30 02:40:58,178 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 118 transitions, 313 flow [2023-08-30 02:40:58,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 118 transitions, 313 flow [2023-08-30 02:40:58,179 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 02:40:58,179 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 118 transitions, 313 flow [2023-08-30 02:40:58,179 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 118 transitions, 313 flow [2023-08-30 02:40:58,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 118 transitions, 313 flow [2023-08-30 02:40:58,190 INFO L130 PetriNetUnfolder]: 8/235 cut-off events. [2023-08-30 02:40:58,190 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-30 02:40:58,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 235 events. 8/235 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 627 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 232. Up to 16 conditions per place. [2023-08-30 02:40:58,195 INFO L119 LiptonReduction]: Number of co-enabled transitions 8316 [2023-08-30 02:40:59,661 INFO L134 LiptonReduction]: Checked pairs total: 13915 [2023-08-30 02:40:59,662 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-30 02:40:59,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 02:40:59,663 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;@1392235d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 02:40:59,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 02:40:59,663 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-30 02:40:59,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 02:40:59,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 02:40:59,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 02:40:59,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 02:40:59,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 02:40:59,664 INFO L85 PathProgramCache]: Analyzing trace with hash 38674, now seen corresponding path program 1 times [2023-08-30 02:40:59,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 02:40:59,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091610547] [2023-08-30 02:40:59,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 02:40:59,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 02:40:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 02:40:59,670 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 02:40:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 02:40:59,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091610547] [2023-08-30 02:40:59,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091610547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 02:40:59,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 02:40:59,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 02:40:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877774456] [2023-08-30 02:40:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 02:40:59,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 02:40:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 02:40:59,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 02:40:59,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 02:40:59,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 206 [2023-08-30 02:40:59,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 151 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 02:40:59,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 02:40:59,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 206 [2023-08-30 02:40:59,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand