./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 23:41:27,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:41:27,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:41:27,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:41:27,444 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:41:27,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:41:27,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:41:27,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:41:27,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:41:27,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:41:27,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:41:27,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:41:27,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:41:27,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:41:27,455 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:41:27,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:41:27,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:41:27,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:41:27,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:41:27,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:41:27,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:41:27,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:41:27,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:41:27,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:41:27,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:41:27,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:41:27,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:41:27,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:41:27,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:41:27,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:41:27,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:41:27,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:41:27,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:41:27,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:41:27,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:41:27,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:41:27,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:41:27,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:41:27,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:41:27,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:41:27,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:41:27,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:41:27,519 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:41:27,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:41:27,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:41:27,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:41:27,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:41:27,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:41:27,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:41:27,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:41:27,525 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:41:27,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:41:27,526 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:41:27,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:41:27,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:41:27,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:41:27,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:41:27,527 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:41:27,527 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:41:27,527 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:41:27,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:41:27,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:41:27,528 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:41:27,528 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:41:27,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:41:27,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:41:27,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:41:27,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:41:27,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:41:27,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:41:27,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:41:27,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:41:27,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:41:27,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:41:27,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:41:27,531 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:41:27,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:41:27,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:41:27,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:41:27,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:41:27,890 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:41:27,891 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:41:27,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-29 23:41:29,143 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:41:29,374 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:41:29,374 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-29 23:41:29,382 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd39c434/b420a641fd5e407a9d2183b27ef0e9ce/FLAGea8f1d3d5 [2023-08-29 23:41:29,393 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd39c434/b420a641fd5e407a9d2183b27ef0e9ce [2023-08-29 23:41:29,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:41:29,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:41:29,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:41:29,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:41:29,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:41:29,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5895a6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29, skipping insertion in model container [2023-08-29 23:41:29,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:41:29,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:41:29,573 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2023-08-29 23:41:29,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:41:29,585 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:41:29,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c[3526,3539] [2023-08-29 23:41:29,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:41:29,628 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:41:29,628 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:41:29,634 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:41:29,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29 WrapperNode [2023-08-29 23:41:29,635 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:41:29,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:41:29,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:41:29,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:41:29,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,704 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-08-29 23:41:29,710 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:41:29,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:41:29,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:41:29,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:41:29,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:41:29,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:41:29,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:41:29,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:41:29,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (1/1) ... [2023-08-29 23:41:29,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:41:29,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:41:29,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 23:41:29,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 23:41:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:41:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:41:29,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:41:29,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:41:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:41:29,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:41:29,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:41:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-29 23:41:29,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-29 23:41:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:41:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:41:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:41:29,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 23:41:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 23:41:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:41:29,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:41:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:41:29,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:41:29,854 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 23:41:29,980 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:41:29,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:41:30,251 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:41:30,356 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:41:30,356 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 23:41:30,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:41:30 BoogieIcfgContainer [2023-08-29 23:41:30,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:41:30,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:41:30,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:41:30,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:41:30,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:41:29" (1/3) ... [2023-08-29 23:41:30,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44531a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:41:30, skipping insertion in model container [2023-08-29 23:41:30,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:29" (2/3) ... [2023-08-29 23:41:30,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44531a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:41:30, skipping insertion in model container [2023-08-29 23:41:30,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:41:30" (3/3) ... [2023-08-29 23:41:30,369 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-08-29 23:41:30,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:41:30,393 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-29 23:41:30,393 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:41:30,492 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 23:41:30,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 163 transitions, 358 flow [2023-08-29 23:41:30,628 INFO L130 PetriNetUnfolder]: 2/159 cut-off events. [2023-08-29 23:41:30,629 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 23:41:30,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 159 events. 2/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-08-29 23:41:30,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 163 transitions, 358 flow [2023-08-29 23:41:30,641 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 155 transitions, 334 flow [2023-08-29 23:41:30,644 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:41:30,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 155 transitions, 334 flow [2023-08-29 23:41:30,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 155 transitions, 334 flow [2023-08-29 23:41:30,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 155 transitions, 334 flow [2023-08-29 23:41:30,722 INFO L130 PetriNetUnfolder]: 2/155 cut-off events. [2023-08-29 23:41:30,722 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 23:41:30,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 155 events. 2/155 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-08-29 23:41:30,726 INFO L119 LiptonReduction]: Number of co-enabled transitions 1702 [2023-08-29 23:41:36,585 INFO L134 LiptonReduction]: Checked pairs total: 9805 [2023-08-29 23:41:36,585 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-29 23:41:36,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:41:36,603 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;@45418dcc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:41:36,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 23:41:36,604 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 23:41:36,605 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:41:36,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:36,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:41:36,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:36,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 640, now seen corresponding path program 1 times [2023-08-29 23:41:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159168636] [2023-08-29 23:41:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:36,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:36,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159168636] [2023-08-29 23:41:36,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159168636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:36,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:36,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:41:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964719929] [2023-08-29 23:41:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:36,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:41:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:36,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:41:36,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:41:36,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 306 [2023-08-29 23:41:36,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 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) [2023-08-29 23:41:36,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:36,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 306 [2023-08-29 23:41:36,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:37,294 INFO L130 PetriNetUnfolder]: 4185/6250 cut-off events. [2023-08-29 23:41:37,294 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-29 23:41:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 6250 events. 4185/6250 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 35775 event pairs, 4185 based on Foata normal form. 0/5313 useless extension candidates. Maximal degree in co-relation 10254. Up to 5885 conditions per place. [2023-08-29 23:41:37,350 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 43 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-08-29 23:41:37,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 206 flow [2023-08-29 23:41:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:41:37,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:41:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2023-08-29 23:41:37,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326797385620915 [2023-08-29 23:41:37,371 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2023-08-29 23:41:37,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2023-08-29 23:41:37,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:37,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2023-08-29 23:41:37,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:37,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:37,386 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:37,387 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 126 flow. Second operand 2 states and 326 transitions. [2023-08-29 23:41:37,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 206 flow [2023-08-29 23:41:37,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-29 23:41:37,396 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-08-29 23:41:37,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-29 23:41:37,401 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-08-29 23:41:37,402 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-08-29 23:41:37,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 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) [2023-08-29 23:41:37,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:37,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:41:37,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:41:37,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:37,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:37,415 INFO L85 PathProgramCache]: Analyzing trace with hash 631870, now seen corresponding path program 1 times [2023-08-29 23:41:37,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:37,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495916678] [2023-08-29 23:41:37,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:37,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:37,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:37,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495916678] [2023-08-29 23:41:37,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495916678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:37,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:37,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:37,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533568349] [2023-08-29 23:41:37,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:37,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:37,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:37,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:37,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-29 23:41:37,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:37,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:37,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-29 23:41:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:38,214 INFO L130 PetriNetUnfolder]: 4038/6033 cut-off events. [2023-08-29 23:41:38,214 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:38,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11790 conditions, 6033 events. 4038/6033 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 34506 event pairs, 4038 based on Foata normal form. 0/5164 useless extension candidates. Maximal degree in co-relation 11787. Up to 5669 conditions per place. [2023-08-29 23:41:38,245 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-29 23:41:38,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 182 flow [2023-08-29 23:41:38,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:38,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-29 23:41:38,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684095860566449 [2023-08-29 23:41:38,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-29 23:41:38,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-29 23:41:38,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:38,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-29 23:41:38,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:38,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:38,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:38,255 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 430 transitions. [2023-08-29 23:41:38,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 182 flow [2023-08-29 23:41:38,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:41:38,257 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 102 flow [2023-08-29 23:41:38,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-29 23:41:38,257 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-08-29 23:41:38,258 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 102 flow [2023-08-29 23:41:38,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:38,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:38,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:41:38,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:41:38,259 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:38,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:38,261 INFO L85 PathProgramCache]: Analyzing trace with hash 631869, now seen corresponding path program 1 times [2023-08-29 23:41:38,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:38,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929538408] [2023-08-29 23:41:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:38,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:38,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:38,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929538408] [2023-08-29 23:41:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929538408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:38,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843046670] [2023-08-29 23:41:38,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:38,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:38,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:38,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:38,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-08-29 23:41:38,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:38,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:38,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-08-29 23:41:38,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:39,006 INFO L130 PetriNetUnfolder]: 3891/5816 cut-off events. [2023-08-29 23:41:39,007 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:39,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11360 conditions, 5816 events. 3891/5816 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 33192 event pairs, 3891 based on Foata normal form. 0/5015 useless extension candidates. Maximal degree in co-relation 11356. Up to 5454 conditions per place. [2023-08-29 23:41:39,039 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-29 23:41:39,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 176 flow [2023-08-29 23:41:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:39,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-29 23:41:39,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485838779956427 [2023-08-29 23:41:39,042 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-29 23:41:39,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-29 23:41:39,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:39,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-29 23:41:39,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,046 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,046 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 102 flow. Second operand 3 states and 446 transitions. [2023-08-29 23:41:39,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 176 flow [2023-08-29 23:41:39,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:39,048 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 99 flow [2023-08-29 23:41:39,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-08-29 23:41:39,049 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-08-29 23:41:39,049 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 99 flow [2023-08-29 23:41:39,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:39,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:41:39,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:41:39,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:39,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:39,051 INFO L85 PathProgramCache]: Analyzing trace with hash 607239920, now seen corresponding path program 1 times [2023-08-29 23:41:39,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:39,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774585723] [2023-08-29 23:41:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:39,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:39,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774585723] [2023-08-29 23:41:39,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774585723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:39,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:39,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:39,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655378234] [2023-08-29 23:41:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:39,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:39,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:39,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-08-29 23:41:39,239 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,239 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:39,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-08-29 23:41:39,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:39,630 INFO L130 PetriNetUnfolder]: 3843/5732 cut-off events. [2023-08-29 23:41:39,630 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:39,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 5732 events. 3843/5732 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32664 event pairs, 3843 based on Foata normal form. 0/4965 useless extension candidates. Maximal degree in co-relation 11193. Up to 5374 conditions per place. [2023-08-29 23:41:39,666 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 36 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-29 23:41:39,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 169 flow [2023-08-29 23:41:39,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-29 23:41:39,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48366013071895425 [2023-08-29 23:41:39,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-29 23:41:39,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-29 23:41:39,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:39,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-29 23:41:39,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,677 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 99 flow. Second operand 3 states and 444 transitions. [2023-08-29 23:41:39,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 169 flow [2023-08-29 23:41:39,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:39,679 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 96 flow [2023-08-29 23:41:39,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-08-29 23:41:39,681 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -12 predicate places. [2023-08-29 23:41:39,681 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 96 flow [2023-08-29 23:41:39,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:39,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:41:39,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:41:39,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:39,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:39,683 INFO L85 PathProgramCache]: Analyzing trace with hash 607239919, now seen corresponding path program 1 times [2023-08-29 23:41:39,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:39,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236802699] [2023-08-29 23:41:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:39,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:39,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236802699] [2023-08-29 23:41:39,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236802699] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:39,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:39,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:39,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115061257] [2023-08-29 23:41:39,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:39,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:39,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:39,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:39,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-29 23:41:39,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:39,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:39,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-29 23:41:39,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:40,193 INFO L130 PetriNetUnfolder]: 3795/5648 cut-off events. [2023-08-29 23:41:40,193 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:40,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 5648 events. 3795/5648 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32188 event pairs, 3795 based on Foata normal form. 0/4915 useless extension candidates. Maximal degree in co-relation 11030. Up to 5294 conditions per place. [2023-08-29 23:41:40,218 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-29 23:41:40,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 162 flow [2023-08-29 23:41:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-29 23:41:40,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46187363834422657 [2023-08-29 23:41:40,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-29 23:41:40,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-29 23:41:40,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:40,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-29 23:41:40,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 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) [2023-08-29 23:41:40,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,224 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,224 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 96 flow. Second operand 3 states and 424 transitions. [2023-08-29 23:41:40,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 162 flow [2023-08-29 23:41:40,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:40,226 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 93 flow [2023-08-29 23:41:40,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-29 23:41:40,227 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-08-29 23:41:40,227 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 93 flow [2023-08-29 23:41:40,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:40,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:40,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:41:40,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:40,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash -557973210, now seen corresponding path program 1 times [2023-08-29 23:41:40,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:40,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842122140] [2023-08-29 23:41:40,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:40,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:40,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842122140] [2023-08-29 23:41:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842122140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596310765] [2023-08-29 23:41:40,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:40,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:40,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:40,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:40,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-29 23:41:40,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:40,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-29 23:41:40,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:40,620 INFO L130 PetriNetUnfolder]: 3648/5417 cut-off events. [2023-08-29 23:41:40,620 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:40,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5417 events. 3648/5417 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 30580 event pairs, 3648 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 10585. Up to 5079 conditions per place. [2023-08-29 23:41:40,654 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 32 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-29 23:41:40,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 155 flow [2023-08-29 23:41:40,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-29 23:41:40,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596949891067538 [2023-08-29 23:41:40,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-29 23:41:40,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-29 23:41:40,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:40,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-29 23:41:40,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,660 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 93 flow. Second operand 3 states and 422 transitions. [2023-08-29 23:41:40,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 155 flow [2023-08-29 23:41:40,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:40,662 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 90 flow [2023-08-29 23:41:40,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-08-29 23:41:40,663 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-08-29 23:41:40,663 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 90 flow [2023-08-29 23:41:40,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:40,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:40,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:41:40,664 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:40,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:40,664 INFO L85 PathProgramCache]: Analyzing trace with hash -557973211, now seen corresponding path program 1 times [2023-08-29 23:41:40,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:40,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889069201] [2023-08-29 23:41:40,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:40,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:40,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889069201] [2023-08-29 23:41:40,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889069201] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:40,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438571231] [2023-08-29 23:41:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:40,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-08-29 23:41:40,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:40,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:40,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-08-29 23:41:40,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:41,051 INFO L130 PetriNetUnfolder]: 3501/5186 cut-off events. [2023-08-29 23:41:41,052 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:41,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10144 conditions, 5186 events. 3501/5186 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 28972 event pairs, 3501 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 10140. Up to 4864 conditions per place. [2023-08-29 23:41:41,079 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-29 23:41:41,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 148 flow [2023-08-29 23:41:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-08-29 23:41:41,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477124183006536 [2023-08-29 23:41:41,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-08-29 23:41:41,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-08-29 23:41:41,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:41,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-08-29 23:41:41,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,085 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 90 flow. Second operand 3 states and 438 transitions. [2023-08-29 23:41:41,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 148 flow [2023-08-29 23:41:41,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:41,086 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 87 flow [2023-08-29 23:41:41,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-08-29 23:41:41,087 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-29 23:41:41,087 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 87 flow [2023-08-29 23:41:41,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:41,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:41,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:41:41,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:41,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:41,089 INFO L85 PathProgramCache]: Analyzing trace with hash 658670065, now seen corresponding path program 1 times [2023-08-29 23:41:41,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:41,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655432144] [2023-08-29 23:41:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:41,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:41,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:41,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655432144] [2023-08-29 23:41:41,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655432144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:41,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:41,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:41:41,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318487719] [2023-08-29 23:41:41,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:41,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:41,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:41,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:41,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:41,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 306 [2023-08-29 23:41:41,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:41,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 306 [2023-08-29 23:41:41,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:41,593 INFO L130 PetriNetUnfolder]: 2733/4098 cut-off events. [2023-08-29 23:41:41,594 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:41,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8033 conditions, 4098 events. 2733/4098 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22379 event pairs, 2733 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 8029. Up to 3840 conditions per place. [2023-08-29 23:41:41,611 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 29 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-29 23:41:41,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 145 flow [2023-08-29 23:41:41,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:41,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-29 23:41:41,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41612200435729846 [2023-08-29 23:41:41,613 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-29 23:41:41,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-29 23:41:41,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:41,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-29 23:41:41,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,617 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 87 flow. Second operand 3 states and 382 transitions. [2023-08-29 23:41:41,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 145 flow [2023-08-29 23:41:41,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:41,618 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 86 flow [2023-08-29 23:41:41,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-08-29 23:41:41,619 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-29 23:41:41,619 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 86 flow [2023-08-29 23:41:41,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:41,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 23:41:41,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:41,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash 658670063, now seen corresponding path program 1 times [2023-08-29 23:41:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:41,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259037088] [2023-08-29 23:41:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:41,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259037088] [2023-08-29 23:41:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259037088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:41,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:41,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500788912] [2023-08-29 23:41:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:41,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:41,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 306 [2023-08-29 23:41:41,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:41,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 306 [2023-08-29 23:41:41,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:41,888 INFO L130 PetriNetUnfolder]: 1965/3010 cut-off events. [2023-08-29 23:41:41,889 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-08-29 23:41:41,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5922 conditions, 3010 events. 1965/3010 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15801 event pairs, 1965 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 5918. Up to 2816 conditions per place. [2023-08-29 23:41:41,906 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-29 23:41:41,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 142 flow [2023-08-29 23:41:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-29 23:41:41,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2023-08-29 23:41:41,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-29 23:41:41,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-29 23:41:41,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:41,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-29 23:41:41,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,912 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 86 flow. Second operand 3 states and 420 transitions. [2023-08-29 23:41:41,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 142 flow [2023-08-29 23:41:41,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:41,913 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 85 flow [2023-08-29 23:41:41,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-08-29 23:41:41,914 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-08-29 23:41:41,914 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 85 flow [2023-08-29 23:41:41,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:41,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:41,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:41,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 23:41:41,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:41,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:41,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1476785543, now seen corresponding path program 1 times [2023-08-29 23:41:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650235628] [2023-08-29 23:41:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:43,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:43,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650235628] [2023-08-29 23:41:43,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650235628] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:43,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:43,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:43,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963840255] [2023-08-29 23:41:43,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:43,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:43,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:43,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:43,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:43,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 306 [2023-08-29 23:41:43,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:43,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:43,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 306 [2023-08-29 23:41:43,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:44,305 INFO L130 PetriNetUnfolder]: 10161/14324 cut-off events. [2023-08-29 23:41:44,306 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-08-29 23:41:44,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 14324 events. 10161/14324 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 75194 event pairs, 2626 based on Foata normal form. 2/14326 useless extension candidates. Maximal degree in co-relation 28961. Up to 4603 conditions per place. [2023-08-29 23:41:44,410 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 113 selfloop transitions, 18 changer transitions 20/151 dead transitions. [2023-08-29 23:41:44,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 151 transitions, 643 flow [2023-08-29 23:41:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:41:44,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:41:44,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1153 transitions. [2023-08-29 23:41:44,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709967320261438 [2023-08-29 23:41:44,414 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1153 transitions. [2023-08-29 23:41:44,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1153 transitions. [2023-08-29 23:41:44,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:44,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1153 transitions. [2023-08-29 23:41:44,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:44,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:44,422 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:44,422 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 85 flow. Second operand 8 states and 1153 transitions. [2023-08-29 23:41:44,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 151 transitions, 643 flow [2023-08-29 23:41:44,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 151 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:44,425 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 220 flow [2023-08-29 23:41:44,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-08-29 23:41:44,426 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2023-08-29 23:41:44,426 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 220 flow [2023-08-29 23:41:44,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:44,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:44,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:44,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 23:41:44,427 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:44,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 53361737, now seen corresponding path program 2 times [2023-08-29 23:41:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:44,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336266917] [2023-08-29 23:41:44,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:44,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:44,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336266917] [2023-08-29 23:41:44,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336266917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:44,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:44,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:44,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479614200] [2023-08-29 23:41:44,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:44,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-29 23:41:44,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:44,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:44,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-29 23:41:44,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:45,206 INFO L130 PetriNetUnfolder]: 3556/5557 cut-off events. [2023-08-29 23:41:45,206 INFO L131 PetriNetUnfolder]: For 3407/3611 co-relation queries the response was YES. [2023-08-29 23:41:45,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14261 conditions, 5557 events. 3556/5557 cut-off events. For 3407/3611 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32153 event pairs, 546 based on Foata normal form. 192/5557 useless extension candidates. Maximal degree in co-relation 14251. Up to 3451 conditions per place. [2023-08-29 23:41:45,245 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 79 selfloop transitions, 20 changer transitions 0/114 dead transitions. [2023-08-29 23:41:45,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 600 flow [2023-08-29 23:41:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1029 transitions. [2023-08-29 23:41:45,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2023-08-29 23:41:45,249 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1029 transitions. [2023-08-29 23:41:45,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1029 transitions. [2023-08-29 23:41:45,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:45,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1029 transitions. [2023-08-29 23:41:45,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,255 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,255 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 220 flow. Second operand 7 states and 1029 transitions. [2023-08-29 23:41:45,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 600 flow [2023-08-29 23:41:45,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 114 transitions, 585 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 23:41:45,273 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 311 flow [2023-08-29 23:41:45,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-08-29 23:41:45,274 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-08-29 23:41:45,274 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 311 flow [2023-08-29 23:41:45,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:45,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:45,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 23:41:45,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:45,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1215593255, now seen corresponding path program 3 times [2023-08-29 23:41:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311088109] [2023-08-29 23:41:45,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:45,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:45,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:45,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311088109] [2023-08-29 23:41:45,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311088109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071509571] [2023-08-29 23:41:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:45,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:45,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:45,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:45,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:45,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:45,944 INFO L130 PetriNetUnfolder]: 2780/4517 cut-off events. [2023-08-29 23:41:45,944 INFO L131 PetriNetUnfolder]: For 4413/4735 co-relation queries the response was YES. [2023-08-29 23:41:45,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13718 conditions, 4517 events. 2780/4517 cut-off events. For 4413/4735 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26379 event pairs, 532 based on Foata normal form. 268/4661 useless extension candidates. Maximal degree in co-relation 13706. Up to 2821 conditions per place. [2023-08-29 23:41:45,983 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 75 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2023-08-29 23:41:45,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 701 flow [2023-08-29 23:41:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1016 transitions. [2023-08-29 23:41:45,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47432306255835666 [2023-08-29 23:41:45,987 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1016 transitions. [2023-08-29 23:41:45,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1016 transitions. [2023-08-29 23:41:45,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:45,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1016 transitions. [2023-08-29 23:41:45,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.14285714285714) internal successors, (1016), 7 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:45,993 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 311 flow. Second operand 7 states and 1016 transitions. [2023-08-29 23:41:45,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 701 flow [2023-08-29 23:41:45,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:46,001 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 419 flow [2023-08-29 23:41:46,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-08-29 23:41:46,001 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-08-29 23:41:46,002 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 419 flow [2023-08-29 23:41:46,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:46,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:46,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:46,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 23:41:46,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:46,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:46,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1297582879, now seen corresponding path program 4 times [2023-08-29 23:41:46,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:46,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298275093] [2023-08-29 23:41:46,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:46,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:46,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:46,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298275093] [2023-08-29 23:41:46,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298275093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:46,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:46,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095642078] [2023-08-29 23:41:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:46,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:46,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:46,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-29 23:41:46,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 419 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:46,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:46,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-29 23:41:46,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:46,796 INFO L130 PetriNetUnfolder]: 2900/4763 cut-off events. [2023-08-29 23:41:46,796 INFO L131 PetriNetUnfolder]: For 6864/7276 co-relation queries the response was YES. [2023-08-29 23:41:46,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15816 conditions, 4763 events. 2900/4763 cut-off events. For 6864/7276 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28754 event pairs, 690 based on Foata normal form. 192/4813 useless extension candidates. Maximal degree in co-relation 15801. Up to 2800 conditions per place. [2023-08-29 23:41:46,838 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 76 selfloop transitions, 41 changer transitions 11/143 dead transitions. [2023-08-29 23:41:46,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 143 transitions, 978 flow [2023-08-29 23:41:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:41:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:41:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1306 transitions. [2023-08-29 23:41:46,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47421931735657225 [2023-08-29 23:41:46,842 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1306 transitions. [2023-08-29 23:41:46,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1306 transitions. [2023-08-29 23:41:46,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:46,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1306 transitions. [2023-08-29 23:41:46,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.11111111111111) internal successors, (1306), 9 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:46,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:46,850 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:46,850 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 419 flow. Second operand 9 states and 1306 transitions. [2023-08-29 23:41:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 143 transitions, 978 flow [2023-08-29 23:41:46,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 143 transitions, 973 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:46,861 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 635 flow [2023-08-29 23:41:46,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-08-29 23:41:46,861 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2023-08-29 23:41:46,862 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 635 flow [2023-08-29 23:41:46,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:46,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:46,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:46,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 23:41:46,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:46,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -474786319, now seen corresponding path program 5 times [2023-08-29 23:41:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:46,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854598715] [2023-08-29 23:41:46,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:46,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:47,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:47,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854598715] [2023-08-29 23:41:47,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854598715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:47,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:47,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451962069] [2023-08-29 23:41:47,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:47,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:47,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:47,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:47,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:47,054 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 635 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:47,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:47,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:47,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:47,508 INFO L130 PetriNetUnfolder]: 2260/3801 cut-off events. [2023-08-29 23:41:47,509 INFO L131 PetriNetUnfolder]: For 7055/7427 co-relation queries the response was YES. [2023-08-29 23:41:47,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13495 conditions, 3801 events. 2260/3801 cut-off events. For 7055/7427 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22294 event pairs, 685 based on Foata normal form. 194/3885 useless extension candidates. Maximal degree in co-relation 13475. Up to 2444 conditions per place. [2023-08-29 23:41:47,542 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 57 selfloop transitions, 35 changer transitions 14/121 dead transitions. [2023-08-29 23:41:47,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 968 flow [2023-08-29 23:41:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1004 transitions. [2023-08-29 23:41:47,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46872082166199813 [2023-08-29 23:41:47,546 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1004 transitions. [2023-08-29 23:41:47,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1004 transitions. [2023-08-29 23:41:47,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:47,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1004 transitions. [2023-08-29 23:41:47,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:47,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:47,552 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:47,553 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 635 flow. Second operand 7 states and 1004 transitions. [2023-08-29 23:41:47,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 968 flow [2023-08-29 23:41:47,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 121 transitions, 949 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-29 23:41:47,568 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 662 flow [2023-08-29 23:41:47,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-08-29 23:41:47,568 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2023-08-29 23:41:47,569 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 662 flow [2023-08-29 23:41:47,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:47,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:47,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:47,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 23:41:47,570 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:47,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1164946831, now seen corresponding path program 6 times [2023-08-29 23:41:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148511807] [2023-08-29 23:41:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:47,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:47,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:47,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148511807] [2023-08-29 23:41:47,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148511807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:47,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:47,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:47,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522994200] [2023-08-29 23:41:47,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:47,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:47,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:47,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:47,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:47,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-08-29 23:41:47,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 662 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:47,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:47,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-08-29 23:41:47,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:48,105 INFO L130 PetriNetUnfolder]: 1199/2126 cut-off events. [2023-08-29 23:41:48,106 INFO L131 PetriNetUnfolder]: For 4207/4409 co-relation queries the response was YES. [2023-08-29 23:41:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 2126 events. 1199/2126 cut-off events. For 4207/4409 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11507 event pairs, 390 based on Foata normal form. 168/2224 useless extension candidates. Maximal degree in co-relation 7568. Up to 1402 conditions per place. [2023-08-29 23:41:48,123 INFO L137 encePairwiseOnDemand]: 297/306 looper letters, 70 selfloop transitions, 38 changer transitions 0/119 dead transitions. [2023-08-29 23:41:48,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1052 flow [2023-08-29 23:41:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1010 transitions. [2023-08-29 23:41:48,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715219421101774 [2023-08-29 23:41:48,127 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1010 transitions. [2023-08-29 23:41:48,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1010 transitions. [2023-08-29 23:41:48,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:48,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1010 transitions. [2023-08-29 23:41:48,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:48,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:48,133 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:48,134 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 662 flow. Second operand 7 states and 1010 transitions. [2023-08-29 23:41:48,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1052 flow [2023-08-29 23:41:48,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 971 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-29 23:41:48,143 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 703 flow [2023-08-29 23:41:48,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2023-08-29 23:41:48,144 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2023-08-29 23:41:48,144 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 703 flow [2023-08-29 23:41:48,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:48,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:48,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:48,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 23:41:48,146 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:48,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:48,146 INFO L85 PathProgramCache]: Analyzing trace with hash -140225591, now seen corresponding path program 7 times [2023-08-29 23:41:48,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:48,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995412802] [2023-08-29 23:41:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:48,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:48,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995412802] [2023-08-29 23:41:48,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995412802] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:48,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:48,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:48,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692046330] [2023-08-29 23:41:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:48,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:48,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:48,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:48,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:48,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 703 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:48,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:48,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:48,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:48,954 INFO L130 PetriNetUnfolder]: 2620/4741 cut-off events. [2023-08-29 23:41:48,954 INFO L131 PetriNetUnfolder]: For 7240/7668 co-relation queries the response was YES. [2023-08-29 23:41:48,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 4741 events. 2620/4741 cut-off events. For 7240/7668 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31924 event pairs, 441 based on Foata normal form. 150/4727 useless extension candidates. Maximal degree in co-relation 14971. Up to 1748 conditions per place. [2023-08-29 23:41:48,992 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 100 selfloop transitions, 59 changer transitions 0/170 dead transitions. [2023-08-29 23:41:48,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 1377 flow [2023-08-29 23:41:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:41:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:41:48,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1311 transitions. [2023-08-29 23:41:48,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760348583877996 [2023-08-29 23:41:48,996 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1311 transitions. [2023-08-29 23:41:48,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1311 transitions. [2023-08-29 23:41:48,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:48,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1311 transitions. [2023-08-29 23:41:49,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.66666666666666) internal successors, (1311), 9 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,020 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,020 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 703 flow. Second operand 9 states and 1311 transitions. [2023-08-29 23:41:49,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 1377 flow [2023-08-29 23:41:49,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 1365 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:49,032 INFO L231 Difference]: Finished difference. Result has 90 places, 102 transitions, 993 flow [2023-08-29 23:41:49,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=90, PETRI_TRANSITIONS=102} [2023-08-29 23:41:49,035 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-08-29 23:41:49,035 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 102 transitions, 993 flow [2023-08-29 23:41:49,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:49,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:49,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 23:41:49,036 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:49,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1222155345, now seen corresponding path program 8 times [2023-08-29 23:41:49,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:49,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650590216] [2023-08-29 23:41:49,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:49,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:49,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:49,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650590216] [2023-08-29 23:41:49,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650590216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:49,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:49,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:49,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715543296] [2023-08-29 23:41:49,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:49,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:49,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:49,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:49,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:49,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:49,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 102 transitions, 993 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:49,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:49,772 INFO L130 PetriNetUnfolder]: 2600/4767 cut-off events. [2023-08-29 23:41:49,773 INFO L131 PetriNetUnfolder]: For 12049/12825 co-relation queries the response was YES. [2023-08-29 23:41:49,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17632 conditions, 4767 events. 2600/4767 cut-off events. For 12049/12825 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32597 event pairs, 423 based on Foata normal form. 352/4943 useless extension candidates. Maximal degree in co-relation 17611. Up to 1744 conditions per place. [2023-08-29 23:41:49,809 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 93 selfloop transitions, 61 changer transitions 4/169 dead transitions. [2023-08-29 23:41:49,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1592 flow [2023-08-29 23:41:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:41:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:41:49,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1307 transitions. [2023-08-29 23:41:49,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745824255628177 [2023-08-29 23:41:49,813 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1307 transitions. [2023-08-29 23:41:49,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1307 transitions. [2023-08-29 23:41:49,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:49,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1307 transitions. [2023-08-29 23:41:49,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.22222222222223) internal successors, (1307), 9 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,821 INFO L175 Difference]: Start difference. First operand has 90 places, 102 transitions, 993 flow. Second operand 9 states and 1307 transitions. [2023-08-29 23:41:49,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1592 flow [2023-08-29 23:41:49,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1576 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:49,844 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 1164 flow [2023-08-29 23:41:49,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2023-08-29 23:41:49,845 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2023-08-29 23:41:49,845 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 1164 flow [2023-08-29 23:41:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:49,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:49,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:49,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 23:41:49,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:49,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:49,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2122783463, now seen corresponding path program 9 times [2023-08-29 23:41:49,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:49,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802477171] [2023-08-29 23:41:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:49,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802477171] [2023-08-29 23:41:50,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802477171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:50,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:50,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:50,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662290418] [2023-08-29 23:41:50,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:50,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:50,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:50,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:50,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 1164 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:50,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:50,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:50,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:50,784 INFO L130 PetriNetUnfolder]: 2691/5022 cut-off events. [2023-08-29 23:41:50,785 INFO L131 PetriNetUnfolder]: For 16860/17682 co-relation queries the response was YES. [2023-08-29 23:41:50,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19983 conditions, 5022 events. 2691/5022 cut-off events. For 16860/17682 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35599 event pairs, 437 based on Foata normal form. 388/5218 useless extension candidates. Maximal degree in co-relation 19959. Up to 1753 conditions per place. [2023-08-29 23:41:50,825 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 115 selfloop transitions, 76 changer transitions 4/206 dead transitions. [2023-08-29 23:41:50,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 206 transitions, 2118 flow [2023-08-29 23:41:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:41:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:41:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1735 transitions. [2023-08-29 23:41:50,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724945533769063 [2023-08-29 23:41:50,830 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1735 transitions. [2023-08-29 23:41:50,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1735 transitions. [2023-08-29 23:41:50,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:50,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1735 transitions. [2023-08-29 23:41:50,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.58333333333334) internal successors, (1735), 12 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:50,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:50,839 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:50,839 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 1164 flow. Second operand 12 states and 1735 transitions. [2023-08-29 23:41:50,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 206 transitions, 2118 flow [2023-08-29 23:41:50,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 206 transitions, 2029 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 23:41:50,862 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 1453 flow [2023-08-29 23:41:50,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2023-08-29 23:41:50,862 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2023-08-29 23:41:50,862 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 1453 flow [2023-08-29 23:41:50,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:50,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:50,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 23:41:50,863 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:50,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1246124463, now seen corresponding path program 10 times [2023-08-29 23:41:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:50,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160870959] [2023-08-29 23:41:50,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:50,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:51,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160870959] [2023-08-29 23:41:51,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160870959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:51,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:51,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470242828] [2023-08-29 23:41:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:51,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:51,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:51,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 1453 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:51,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:51,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:51,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:51,782 INFO L130 PetriNetUnfolder]: 2624/4929 cut-off events. [2023-08-29 23:41:51,782 INFO L131 PetriNetUnfolder]: For 20012/20864 co-relation queries the response was YES. [2023-08-29 23:41:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20473 conditions, 4929 events. 2624/4929 cut-off events. For 20012/20864 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35029 event pairs, 499 based on Foata normal form. 318/5053 useless extension candidates. Maximal degree in co-relation 20447. Up to 1732 conditions per place. [2023-08-29 23:41:51,812 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 107 selfloop transitions, 84 changer transitions 8/210 dead transitions. [2023-08-29 23:41:51,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 210 transitions, 2331 flow [2023-08-29 23:41:51,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:41:51,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:41:51,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1729 transitions. [2023-08-29 23:41:51,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086056644880175 [2023-08-29 23:41:51,871 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1729 transitions. [2023-08-29 23:41:51,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1729 transitions. [2023-08-29 23:41:51,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:51,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1729 transitions. [2023-08-29 23:41:51,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.08333333333334) internal successors, (1729), 12 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:51,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:51,878 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:51,878 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 1453 flow. Second operand 12 states and 1729 transitions. [2023-08-29 23:41:51,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 210 transitions, 2331 flow [2023-08-29 23:41:51,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2200 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-08-29 23:41:51,906 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1592 flow [2023-08-29 23:41:51,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1592, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2023-08-29 23:41:51,907 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 51 predicate places. [2023-08-29 23:41:51,907 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1592 flow [2023-08-29 23:41:51,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:51,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:51,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:51,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 23:41:51,908 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:51,908 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1899180883, now seen corresponding path program 11 times [2023-08-29 23:41:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:51,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446189579] [2023-08-29 23:41:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:52,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446189579] [2023-08-29 23:41:52,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446189579] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:52,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:52,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437597705] [2023-08-29 23:41:52,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:52,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:52,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:52,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:52,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:52,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1592 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:52,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:52,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:52,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:52,731 INFO L130 PetriNetUnfolder]: 2060/3931 cut-off events. [2023-08-29 23:41:52,731 INFO L131 PetriNetUnfolder]: For 19824/20592 co-relation queries the response was YES. [2023-08-29 23:41:52,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17156 conditions, 3931 events. 2060/3931 cut-off events. For 19824/20592 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27137 event pairs, 470 based on Foata normal form. 422/4251 useless extension candidates. Maximal degree in co-relation 17128. Up to 1546 conditions per place. [2023-08-29 23:41:52,763 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 103 selfloop transitions, 100 changer transitions 19/233 dead transitions. [2023-08-29 23:41:52,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 233 transitions, 2850 flow [2023-08-29 23:41:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 23:41:52,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 23:41:52,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1590 transitions. [2023-08-29 23:41:52,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-29 23:41:52,766 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1590 transitions. [2023-08-29 23:41:52,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1590 transitions. [2023-08-29 23:41:52,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:52,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1590 transitions. [2023-08-29 23:41:52,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.54545454545453) internal successors, (1590), 11 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:52,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:52,773 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:52,774 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1592 flow. Second operand 11 states and 1590 transitions. [2023-08-29 23:41:52,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 233 transitions, 2850 flow [2023-08-29 23:41:52,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 233 transitions, 2783 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-29 23:41:52,804 INFO L231 Difference]: Finished difference. Result has 122 places, 146 transitions, 2052 flow [2023-08-29 23:41:52,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=122, PETRI_TRANSITIONS=146} [2023-08-29 23:41:52,805 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 58 predicate places. [2023-08-29 23:41:52,805 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 146 transitions, 2052 flow [2023-08-29 23:41:52,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:52,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:52,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:52,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 23:41:52,806 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:52,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:52,806 INFO L85 PathProgramCache]: Analyzing trace with hash -381515783, now seen corresponding path program 12 times [2023-08-29 23:41:52,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759504167] [2023-08-29 23:41:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:52,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:52,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:52,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759504167] [2023-08-29 23:41:52,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759504167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:52,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:52,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:52,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590920536] [2023-08-29 23:41:52,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:52,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:52,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:52,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:52,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:53,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:53,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 146 transitions, 2052 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:53,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:53,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:53,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:53,739 INFO L130 PetriNetUnfolder]: 2353/4608 cut-off events. [2023-08-29 23:41:53,739 INFO L131 PetriNetUnfolder]: For 27066/27828 co-relation queries the response was YES. [2023-08-29 23:41:53,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20783 conditions, 4608 events. 2353/4608 cut-off events. For 27066/27828 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33383 event pairs, 190 based on Foata normal form. 210/4704 useless extension candidates. Maximal degree in co-relation 20751. Up to 1404 conditions per place. [2023-08-29 23:41:53,763 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 105 selfloop transitions, 125 changer transitions 2/243 dead transitions. [2023-08-29 23:41:53,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 243 transitions, 3012 flow [2023-08-29 23:41:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 23:41:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 23:41:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1456 transitions. [2023-08-29 23:41:53,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47581699346405226 [2023-08-29 23:41:53,766 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1456 transitions. [2023-08-29 23:41:53,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1456 transitions. [2023-08-29 23:41:53,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:53,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1456 transitions. [2023-08-29 23:41:53,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.6) internal successors, (1456), 10 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:53,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:53,772 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:53,772 INFO L175 Difference]: Start difference. First operand has 122 places, 146 transitions, 2052 flow. Second operand 10 states and 1456 transitions. [2023-08-29 23:41:53,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 243 transitions, 3012 flow [2023-08-29 23:41:53,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 243 transitions, 2937 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-08-29 23:41:53,818 INFO L231 Difference]: Finished difference. Result has 128 places, 170 transitions, 2590 flow [2023-08-29 23:41:53,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2590, PETRI_PLACES=128, PETRI_TRANSITIONS=170} [2023-08-29 23:41:53,819 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 64 predicate places. [2023-08-29 23:41:53,819 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 170 transitions, 2590 flow [2023-08-29 23:41:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:53,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:53,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:53,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 23:41:53,820 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:53,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:53,821 INFO L85 PathProgramCache]: Analyzing trace with hash 389047513, now seen corresponding path program 13 times [2023-08-29 23:41:53,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:53,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699103488] [2023-08-29 23:41:53,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:53,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:54,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:54,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699103488] [2023-08-29 23:41:54,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699103488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:54,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:54,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:54,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733031844] [2023-08-29 23:41:54,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:54,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:54,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:54,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:54,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:54,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:54,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 170 transitions, 2590 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:54,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:54,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:54,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:54,842 INFO L130 PetriNetUnfolder]: 2428/4805 cut-off events. [2023-08-29 23:41:54,842 INFO L131 PetriNetUnfolder]: For 38626/39658 co-relation queries the response was YES. [2023-08-29 23:41:54,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24137 conditions, 4805 events. 2428/4805 cut-off events. For 38626/39658 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 35238 event pairs, 408 based on Foata normal form. 210/4901 useless extension candidates. Maximal degree in co-relation 24103. Up to 1945 conditions per place. [2023-08-29 23:41:54,872 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 120 selfloop transitions, 141 changer transitions 2/274 dead transitions. [2023-08-29 23:41:54,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 274 transitions, 3937 flow [2023-08-29 23:41:54,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-29 23:41:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-29 23:41:54,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1859 transitions. [2023-08-29 23:41:54,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2023-08-29 23:41:54,875 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1859 transitions. [2023-08-29 23:41:54,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1859 transitions. [2023-08-29 23:41:54,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:54,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1859 transitions. [2023-08-29 23:41:54,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:54,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:54,882 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:54,882 INFO L175 Difference]: Start difference. First operand has 128 places, 170 transitions, 2590 flow. Second operand 13 states and 1859 transitions. [2023-08-29 23:41:54,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 274 transitions, 3937 flow [2023-08-29 23:41:54,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 274 transitions, 3782 flow, removed 55 selfloop flow, removed 5 redundant places. [2023-08-29 23:41:54,970 INFO L231 Difference]: Finished difference. Result has 139 places, 209 transitions, 3456 flow [2023-08-29 23:41:54,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3456, PETRI_PLACES=139, PETRI_TRANSITIONS=209} [2023-08-29 23:41:54,971 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-08-29 23:41:54,971 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 209 transitions, 3456 flow [2023-08-29 23:41:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:54,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:54,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-29 23:41:54,972 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:54,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1523814905, now seen corresponding path program 14 times [2023-08-29 23:41:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997401876] [2023-08-29 23:41:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:55,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:55,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997401876] [2023-08-29 23:41:55,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997401876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:55,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:55,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 23:41:55,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960926583] [2023-08-29 23:41:55,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:55,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:41:55,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:55,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:41:55,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:41:55,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:55,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 209 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:55,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:55,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:55,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:56,206 INFO L130 PetriNetUnfolder]: 2397/4869 cut-off events. [2023-08-29 23:41:56,206 INFO L131 PetriNetUnfolder]: For 46258/47266 co-relation queries the response was YES. [2023-08-29 23:41:56,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25955 conditions, 4869 events. 2397/4869 cut-off events. For 46258/47266 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 36427 event pairs, 334 based on Foata normal form. 378/5181 useless extension candidates. Maximal degree in co-relation 25917. Up to 1365 conditions per place. [2023-08-29 23:41:56,242 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 143 selfloop transitions, 165 changer transitions 10/329 dead transitions. [2023-08-29 23:41:56,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 329 transitions, 5127 flow [2023-08-29 23:41:56,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:41:56,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:41:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1732 transitions. [2023-08-29 23:41:56,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47167755991285404 [2023-08-29 23:41:56,244 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1732 transitions. [2023-08-29 23:41:56,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1732 transitions. [2023-08-29 23:41:56,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:56,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1732 transitions. [2023-08-29 23:41:56,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.33333333333334) internal successors, (1732), 12 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:56,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:56,250 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:56,250 INFO L175 Difference]: Start difference. First operand has 139 places, 209 transitions, 3456 flow. Second operand 12 states and 1732 transitions. [2023-08-29 23:41:56,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 329 transitions, 5127 flow [2023-08-29 23:41:56,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 329 transitions, 4978 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-29 23:41:56,379 INFO L231 Difference]: Finished difference. Result has 148 places, 246 transitions, 4290 flow [2023-08-29 23:41:56,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4290, PETRI_PLACES=148, PETRI_TRANSITIONS=246} [2023-08-29 23:41:56,380 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 84 predicate places. [2023-08-29 23:41:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 246 transitions, 4290 flow [2023-08-29 23:41:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:56,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 23:41:56,381 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:56,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash -983768009, now seen corresponding path program 15 times [2023-08-29 23:41:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:56,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360044020] [2023-08-29 23:41:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:56,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:56,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:56,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360044020] [2023-08-29 23:41:56,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360044020] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 23:41:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972840866] [2023-08-29 23:41:56,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:56,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:41:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:56,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:41:56,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:41:56,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:56,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 246 transitions, 4290 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:56,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:56,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:56,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:57,586 INFO L130 PetriNetUnfolder]: 2324/4756 cut-off events. [2023-08-29 23:41:57,586 INFO L131 PetriNetUnfolder]: For 56915/57885 co-relation queries the response was YES. [2023-08-29 23:41:57,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27115 conditions, 4756 events. 2324/4756 cut-off events. For 56915/57885 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 35690 event pairs, 402 based on Foata normal form. 284/4962 useless extension candidates. Maximal degree in co-relation 27074. Up to 1916 conditions per place. [2023-08-29 23:41:57,626 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 148 selfloop transitions, 159 changer transitions 5/323 dead transitions. [2023-08-29 23:41:57,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 323 transitions, 5399 flow [2023-08-29 23:41:57,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 23:41:57,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 23:41:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2135 transitions. [2023-08-29 23:41:57,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651416122004357 [2023-08-29 23:41:57,629 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2135 transitions. [2023-08-29 23:41:57,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2135 transitions. [2023-08-29 23:41:57,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:57,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2135 transitions. [2023-08-29 23:41:57,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.33333333333334) internal successors, (2135), 15 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:57,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:57,636 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:57,636 INFO L175 Difference]: Start difference. First operand has 148 places, 246 transitions, 4290 flow. Second operand 15 states and 2135 transitions. [2023-08-29 23:41:57,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 323 transitions, 5399 flow [2023-08-29 23:41:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 323 transitions, 5146 flow, removed 58 selfloop flow, removed 9 redundant places. [2023-08-29 23:41:57,792 INFO L231 Difference]: Finished difference. Result has 154 places, 245 transitions, 4379 flow [2023-08-29 23:41:57,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4379, PETRI_PLACES=154, PETRI_TRANSITIONS=245} [2023-08-29 23:41:57,792 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 90 predicate places. [2023-08-29 23:41:57,793 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 245 transitions, 4379 flow [2023-08-29 23:41:57,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:57,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:57,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:57,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 23:41:57,793 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:57,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:57,794 INFO L85 PathProgramCache]: Analyzing trace with hash -671271949, now seen corresponding path program 16 times [2023-08-29 23:41:57,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:57,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694794417] [2023-08-29 23:41:57,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:57,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694794417] [2023-08-29 23:41:57,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694794417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:57,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:57,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 23:41:57,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519035910] [2023-08-29 23:41:57,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:41:57,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:57,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:41:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:41:58,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:58,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 245 transitions, 4379 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:58,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:58,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:58,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:59,019 INFO L130 PetriNetUnfolder]: 2321/4773 cut-off events. [2023-08-29 23:41:59,019 INFO L131 PetriNetUnfolder]: For 59456/60452 co-relation queries the response was YES. [2023-08-29 23:41:59,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27534 conditions, 4773 events. 2321/4773 cut-off events. For 59456/60452 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36002 event pairs, 410 based on Foata normal form. 284/4979 useless extension candidates. Maximal degree in co-relation 27493. Up to 1922 conditions per place. [2023-08-29 23:41:59,054 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 152 selfloop transitions, 162 changer transitions 14/339 dead transitions. [2023-08-29 23:41:59,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 339 transitions, 5698 flow [2023-08-29 23:41:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-29 23:41:59,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-29 23:41:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2681 transitions. [2023-08-29 23:41:59,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611283109735122 [2023-08-29 23:41:59,057 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2681 transitions. [2023-08-29 23:41:59,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2681 transitions. [2023-08-29 23:41:59,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:59,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2681 transitions. [2023-08-29 23:41:59,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 141.10526315789474) internal successors, (2681), 19 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:59,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:59,064 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:59,064 INFO L175 Difference]: Start difference. First operand has 154 places, 245 transitions, 4379 flow. Second operand 19 states and 2681 transitions. [2023-08-29 23:41:59,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 339 transitions, 5698 flow [2023-08-29 23:41:59,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 339 transitions, 5530 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-08-29 23:41:59,238 INFO L231 Difference]: Finished difference. Result has 164 places, 248 transitions, 4646 flow [2023-08-29 23:41:59,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4646, PETRI_PLACES=164, PETRI_TRANSITIONS=248} [2023-08-29 23:41:59,240 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 100 predicate places. [2023-08-29 23:41:59,240 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 248 transitions, 4646 flow [2023-08-29 23:41:59,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:59,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:59,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:59,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-29 23:41:59,241 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:41:59,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash -789055745, now seen corresponding path program 17 times [2023-08-29 23:41:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124422240] [2023-08-29 23:41:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:59,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124422240] [2023-08-29 23:41:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124422240] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:59,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 23:41:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695358263] [2023-08-29 23:41:59,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:41:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:41:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:41:59,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:41:59,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 248 transitions, 4646 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:59,475 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:59,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:41:59,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:00,476 INFO L130 PetriNetUnfolder]: 2366/4883 cut-off events. [2023-08-29 23:42:00,476 INFO L131 PetriNetUnfolder]: For 67902/68978 co-relation queries the response was YES. [2023-08-29 23:42:00,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28870 conditions, 4883 events. 2366/4883 cut-off events. For 67902/68978 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37403 event pairs, 410 based on Foata normal form. 374/5181 useless extension candidates. Maximal degree in co-relation 28829. Up to 1921 conditions per place. [2023-08-29 23:42:00,509 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 131 selfloop transitions, 135 changer transitions 76/353 dead transitions. [2023-08-29 23:42:00,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 353 transitions, 6339 flow [2023-08-29 23:42:00,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 23:42:00,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 23:42:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2414 transitions. [2023-08-29 23:42:00,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2023-08-29 23:42:00,513 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2414 transitions. [2023-08-29 23:42:00,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2414 transitions. [2023-08-29 23:42:00,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:00,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2414 transitions. [2023-08-29 23:42:00,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:00,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:00,520 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:00,520 INFO L175 Difference]: Start difference. First operand has 164 places, 248 transitions, 4646 flow. Second operand 17 states and 2414 transitions. [2023-08-29 23:42:00,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 353 transitions, 6339 flow [2023-08-29 23:42:00,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 353 transitions, 5963 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-29 23:42:00,669 INFO L231 Difference]: Finished difference. Result has 166 places, 220 transitions, 3996 flow [2023-08-29 23:42:00,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3996, PETRI_PLACES=166, PETRI_TRANSITIONS=220} [2023-08-29 23:42:00,670 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2023-08-29 23:42:00,670 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 220 transitions, 3996 flow [2023-08-29 23:42:00,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:00,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:00,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:00,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-29 23:42:00,671 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:00,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1827200889, now seen corresponding path program 18 times [2023-08-29 23:42:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:00,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077008364] [2023-08-29 23:42:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:00,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:00,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:00,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077008364] [2023-08-29 23:42:00,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077008364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:00,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:00,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 23:42:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337607232] [2023-08-29 23:42:00,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:42:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:42:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:42:00,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:00,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 220 transitions, 3996 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:00,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:00,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:00,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:01,610 INFO L130 PetriNetUnfolder]: 2118/4375 cut-off events. [2023-08-29 23:42:01,611 INFO L131 PetriNetUnfolder]: For 62863/63785 co-relation queries the response was YES. [2023-08-29 23:42:01,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26002 conditions, 4375 events. 2118/4375 cut-off events. For 62863/63785 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 32688 event pairs, 570 based on Foata normal form. 108/4419 useless extension candidates. Maximal degree in co-relation 25959. Up to 3289 conditions per place. [2023-08-29 23:42:01,659 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 210 selfloop transitions, 48 changer transitions 8/277 dead transitions. [2023-08-29 23:42:01,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 277 transitions, 4939 flow [2023-08-29 23:42:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 23:42:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 23:42:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2231 transitions. [2023-08-29 23:42:01,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556781045751634 [2023-08-29 23:42:01,661 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2231 transitions. [2023-08-29 23:42:01,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2231 transitions. [2023-08-29 23:42:01,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:01,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2231 transitions. [2023-08-29 23:42:01,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.4375) internal successors, (2231), 16 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:01,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:01,666 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:01,666 INFO L175 Difference]: Start difference. First operand has 166 places, 220 transitions, 3996 flow. Second operand 16 states and 2231 transitions. [2023-08-29 23:42:01,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 277 transitions, 4939 flow [2023-08-29 23:42:01,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 277 transitions, 4763 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-08-29 23:42:01,771 INFO L231 Difference]: Finished difference. Result has 163 places, 221 transitions, 3946 flow [2023-08-29 23:42:01,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3946, PETRI_PLACES=163, PETRI_TRANSITIONS=221} [2023-08-29 23:42:01,772 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 99 predicate places. [2023-08-29 23:42:01,772 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 221 transitions, 3946 flow [2023-08-29 23:42:01,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:01,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:01,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:01,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-29 23:42:01,772 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:01,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1055248889, now seen corresponding path program 19 times [2023-08-29 23:42:01,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:01,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760102543] [2023-08-29 23:42:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:01,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:01,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:01,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:01,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760102543] [2023-08-29 23:42:01,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760102543] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:01,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:01,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:42:01,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151380257] [2023-08-29 23:42:01,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:01,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:42:01,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:42:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:42:01,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 306 [2023-08-29 23:42:01,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 221 transitions, 3946 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:01,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:01,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 306 [2023-08-29 23:42:01,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:02,573 INFO L130 PetriNetUnfolder]: 1936/4194 cut-off events. [2023-08-29 23:42:02,573 INFO L131 PetriNetUnfolder]: For 59261/59759 co-relation queries the response was YES. [2023-08-29 23:42:02,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24199 conditions, 4194 events. 1936/4194 cut-off events. For 59261/59759 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32330 event pairs, 346 based on Foata normal form. 230/4382 useless extension candidates. Maximal degree in co-relation 24157. Up to 1162 conditions per place. [2023-08-29 23:42:02,603 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 129 selfloop transitions, 137 changer transitions 13/290 dead transitions. [2023-08-29 23:42:02,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 290 transitions, 5024 flow [2023-08-29 23:42:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:42:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:42:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1182 transitions. [2023-08-29 23:42:02,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284313725490197 [2023-08-29 23:42:02,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1182 transitions. [2023-08-29 23:42:02,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1182 transitions. [2023-08-29 23:42:02,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:02,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1182 transitions. [2023-08-29 23:42:02,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.75) internal successors, (1182), 8 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:02,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:02,608 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:02,608 INFO L175 Difference]: Start difference. First operand has 163 places, 221 transitions, 3946 flow. Second operand 8 states and 1182 transitions. [2023-08-29 23:42:02,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 290 transitions, 5024 flow [2023-08-29 23:42:02,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 290 transitions, 4922 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-29 23:42:02,692 INFO L231 Difference]: Finished difference. Result has 160 places, 232 transitions, 4473 flow [2023-08-29 23:42:02,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4473, PETRI_PLACES=160, PETRI_TRANSITIONS=232} [2023-08-29 23:42:02,692 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 96 predicate places. [2023-08-29 23:42:02,692 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 232 transitions, 4473 flow [2023-08-29 23:42:02,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:02,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:02,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:02,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-29 23:42:02,693 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:02,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash -285930057, now seen corresponding path program 20 times [2023-08-29 23:42:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:02,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857342060] [2023-08-29 23:42:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:02,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:02,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:02,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:02,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857342060] [2023-08-29 23:42:02,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857342060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:02,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:02,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:42:02,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075070557] [2023-08-29 23:42:02,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:02,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:42:02,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:02,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:42:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:42:02,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:02,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 232 transitions, 4473 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:02,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:02,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:02,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:03,691 INFO L130 PetriNetUnfolder]: 1886/4021 cut-off events. [2023-08-29 23:42:03,691 INFO L131 PetriNetUnfolder]: For 67085/68225 co-relation queries the response was YES. [2023-08-29 23:42:03,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25243 conditions, 4021 events. 1886/4021 cut-off events. For 67085/68225 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30314 event pairs, 159 based on Foata normal form. 436/4409 useless extension candidates. Maximal degree in co-relation 25200. Up to 1188 conditions per place. [2023-08-29 23:42:03,721 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 99 selfloop transitions, 178 changer transitions 9/297 dead transitions. [2023-08-29 23:42:03,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 297 transitions, 5400 flow [2023-08-29 23:42:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 23:42:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 23:42:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1445 transitions. [2023-08-29 23:42:03,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-08-29 23:42:03,724 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1445 transitions. [2023-08-29 23:42:03,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1445 transitions. [2023-08-29 23:42:03,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:03,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1445 transitions. [2023-08-29 23:42:03,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.5) internal successors, (1445), 10 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:03,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:03,728 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:03,728 INFO L175 Difference]: Start difference. First operand has 160 places, 232 transitions, 4473 flow. Second operand 10 states and 1445 transitions. [2023-08-29 23:42:03,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 297 transitions, 5400 flow [2023-08-29 23:42:03,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 297 transitions, 5322 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-08-29 23:42:03,845 INFO L231 Difference]: Finished difference. Result has 166 places, 229 transitions, 4740 flow [2023-08-29 23:42:03,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4740, PETRI_PLACES=166, PETRI_TRANSITIONS=229} [2023-08-29 23:42:03,846 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2023-08-29 23:42:03,846 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 229 transitions, 4740 flow [2023-08-29 23:42:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:03,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:03,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-29 23:42:03,847 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:03,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash 675694263, now seen corresponding path program 21 times [2023-08-29 23:42:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562095027] [2023-08-29 23:42:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:04,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:04,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:04,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562095027] [2023-08-29 23:42:04,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562095027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:04,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:04,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 23:42:04,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705971256] [2023-08-29 23:42:04,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:04,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:42:04,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:42:04,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:42:04,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:04,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 229 transitions, 4740 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:04,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:04,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:04,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:04,819 INFO L130 PetriNetUnfolder]: 1886/4052 cut-off events. [2023-08-29 23:42:04,819 INFO L131 PetriNetUnfolder]: For 76929/77973 co-relation queries the response was YES. [2023-08-29 23:42:04,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26928 conditions, 4052 events. 1886/4052 cut-off events. For 76929/77973 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30796 event pairs, 151 based on Foata normal form. 378/4380 useless extension candidates. Maximal degree in co-relation 26884. Up to 1128 conditions per place. [2023-08-29 23:42:04,849 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 108 selfloop transitions, 181 changer transitions 6/306 dead transitions. [2023-08-29 23:42:04,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 306 transitions, 5838 flow [2023-08-29 23:42:04,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 23:42:04,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 23:42:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1590 transitions. [2023-08-29 23:42:04,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-08-29 23:42:04,851 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1590 transitions. [2023-08-29 23:42:04,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1590 transitions. [2023-08-29 23:42:04,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:04,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1590 transitions. [2023-08-29 23:42:04,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.54545454545453) internal successors, (1590), 11 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:04,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:04,855 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:04,855 INFO L175 Difference]: Start difference. First operand has 166 places, 229 transitions, 4740 flow. Second operand 11 states and 1590 transitions. [2023-08-29 23:42:04,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 306 transitions, 5838 flow [2023-08-29 23:42:04,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 306 transitions, 5471 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-08-29 23:42:04,968 INFO L231 Difference]: Finished difference. Result has 167 places, 233 transitions, 4857 flow [2023-08-29 23:42:04,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4411, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4857, PETRI_PLACES=167, PETRI_TRANSITIONS=233} [2023-08-29 23:42:04,969 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 103 predicate places. [2023-08-29 23:42:04,969 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 233 transitions, 4857 flow [2023-08-29 23:42:04,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:04,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:04,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-29 23:42:04,970 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:04,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -719863875, now seen corresponding path program 22 times [2023-08-29 23:42:04,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968272736] [2023-08-29 23:42:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:05,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968272736] [2023-08-29 23:42:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968272736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:05,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:05,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 23:42:05,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588674155] [2023-08-29 23:42:05,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:42:05,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:05,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:42:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:42:05,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-29 23:42:05,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 233 transitions, 4857 flow. Second operand has 9 states, 9 states have (on average 132.33333333333334) internal successors, (1191), 9 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:05,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:05,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-29 23:42:05,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:06,232 INFO L130 PetriNetUnfolder]: 2371/4770 cut-off events. [2023-08-29 23:42:06,232 INFO L131 PetriNetUnfolder]: For 90921/92089 co-relation queries the response was YES. [2023-08-29 23:42:06,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30803 conditions, 4770 events. 2371/4770 cut-off events. For 90921/92089 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35179 event pairs, 215 based on Foata normal form. 422/5136 useless extension candidates. Maximal degree in co-relation 30760. Up to 1463 conditions per place. [2023-08-29 23:42:06,267 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 109 selfloop transitions, 178 changer transitions 22/319 dead transitions. [2023-08-29 23:42:06,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 319 transitions, 6066 flow [2023-08-29 23:42:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:42:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:42:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1698 transitions. [2023-08-29 23:42:06,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624183006535948 [2023-08-29 23:42:06,271 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1698 transitions. [2023-08-29 23:42:06,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1698 transitions. [2023-08-29 23:42:06,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:06,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1698 transitions. [2023-08-29 23:42:06,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.5) internal successors, (1698), 12 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:06,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:06,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:06,276 INFO L175 Difference]: Start difference. First operand has 167 places, 233 transitions, 4857 flow. Second operand 12 states and 1698 transitions. [2023-08-29 23:42:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 319 transitions, 6066 flow [2023-08-29 23:42:06,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 319 transitions, 5716 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-29 23:42:06,410 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 4825 flow [2023-08-29 23:42:06,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4525, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4825, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2023-08-29 23:42:06,411 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2023-08-29 23:42:06,411 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 4825 flow [2023-08-29 23:42:06,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.33333333333334) internal successors, (1191), 9 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:06,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:06,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-29 23:42:06,412 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:06,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash 472995197, now seen corresponding path program 23 times [2023-08-29 23:42:06,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:06,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636928100] [2023-08-29 23:42:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:06,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:06,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636928100] [2023-08-29 23:42:06,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636928100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:06,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:06,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 23:42:06,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815087779] [2023-08-29 23:42:06,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:06,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:42:06,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:06,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:42:06,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:42:06,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:06,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 4825 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:06,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:06,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:06,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:07,335 INFO L130 PetriNetUnfolder]: 1806/3929 cut-off events. [2023-08-29 23:42:07,335 INFO L131 PetriNetUnfolder]: For 77203/78293 co-relation queries the response was YES. [2023-08-29 23:42:07,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26334 conditions, 3929 events. 1806/3929 cut-off events. For 77203/78293 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 30031 event pairs, 164 based on Foata normal form. 416/4303 useless extension candidates. Maximal degree in co-relation 26290. Up to 1094 conditions per place. [2023-08-29 23:42:07,364 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 104 selfloop transitions, 173 changer transitions 17/305 dead transitions. [2023-08-29 23:42:07,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 5872 flow [2023-08-29 23:42:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 23:42:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 23:42:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1593 transitions. [2023-08-29 23:42:07,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732620320855615 [2023-08-29 23:42:07,366 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1593 transitions. [2023-08-29 23:42:07,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1593 transitions. [2023-08-29 23:42:07,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:07,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1593 transitions. [2023-08-29 23:42:07,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.8181818181818) internal successors, (1593), 11 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:07,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:07,371 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:07,371 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 4825 flow. Second operand 11 states and 1593 transitions. [2023-08-29 23:42:07,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 5872 flow [2023-08-29 23:42:07,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 305 transitions, 5652 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-08-29 23:42:07,494 INFO L231 Difference]: Finished difference. Result has 173 places, 224 transitions, 4905 flow [2023-08-29 23:42:07,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4585, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4905, PETRI_PLACES=173, PETRI_TRANSITIONS=224} [2023-08-29 23:42:07,494 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 109 predicate places. [2023-08-29 23:42:07,494 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 224 transitions, 4905 flow [2023-08-29 23:42:07,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:07,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:07,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:07,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-29 23:42:07,495 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:07,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:07,495 INFO L85 PathProgramCache]: Analyzing trace with hash -585421383, now seen corresponding path program 24 times [2023-08-29 23:42:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:07,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116438434] [2023-08-29 23:42:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:07,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:07,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:07,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116438434] [2023-08-29 23:42:07,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116438434] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:07,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:07,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 23:42:07,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314106835] [2023-08-29 23:42:07,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:07,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:42:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:42:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:42:07,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:07,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 224 transitions, 4905 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:07,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:07,738 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:07,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:08,388 INFO L130 PetriNetUnfolder]: 1614/3514 cut-off events. [2023-08-29 23:42:08,388 INFO L131 PetriNetUnfolder]: For 82097/82823 co-relation queries the response was YES. [2023-08-29 23:42:08,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24172 conditions, 3514 events. 1614/3514 cut-off events. For 82097/82823 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26466 event pairs, 414 based on Foata normal form. 188/3660 useless extension candidates. Maximal degree in co-relation 24128. Up to 2309 conditions per place. [2023-08-29 23:42:08,415 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 202 selfloop transitions, 64 changer transitions 5/282 dead transitions. [2023-08-29 23:42:08,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 282 transitions, 5921 flow [2023-08-29 23:42:08,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 23:42:08,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 23:42:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2238 transitions. [2023-08-29 23:42:08,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571078431372549 [2023-08-29 23:42:08,417 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2238 transitions. [2023-08-29 23:42:08,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2238 transitions. [2023-08-29 23:42:08,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:08,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2238 transitions. [2023-08-29 23:42:08,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.875) internal successors, (2238), 16 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:08,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:08,422 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:08,423 INFO L175 Difference]: Start difference. First operand has 173 places, 224 transitions, 4905 flow. Second operand 16 states and 2238 transitions. [2023-08-29 23:42:08,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 282 transitions, 5921 flow [2023-08-29 23:42:08,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 282 transitions, 5768 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-29 23:42:08,527 INFO L231 Difference]: Finished difference. Result has 183 places, 225 transitions, 4933 flow [2023-08-29 23:42:08,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4933, PETRI_PLACES=183, PETRI_TRANSITIONS=225} [2023-08-29 23:42:08,528 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 119 predicate places. [2023-08-29 23:42:08,528 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 225 transitions, 4933 flow [2023-08-29 23:42:08,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:08,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:08,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:08,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-29 23:42:08,529 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:08,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 462488823, now seen corresponding path program 25 times [2023-08-29 23:42:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:08,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899837232] [2023-08-29 23:42:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:08,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:08,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899837232] [2023-08-29 23:42:08,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899837232] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:08,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:08,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:42:08,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152779091] [2023-08-29 23:42:08,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:08,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:42:08,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:08,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:42:08,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:42:08,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:08,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 225 transitions, 4933 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:08,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:08,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:08,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:09,443 INFO L130 PetriNetUnfolder]: 1566/3430 cut-off events. [2023-08-29 23:42:09,443 INFO L131 PetriNetUnfolder]: For 79940/80732 co-relation queries the response was YES. [2023-08-29 23:42:09,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23132 conditions, 3430 events. 1566/3430 cut-off events. For 79940/80732 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25798 event pairs, 280 based on Foata normal form. 272/3660 useless extension candidates. Maximal degree in co-relation 23088. Up to 1197 conditions per place. [2023-08-29 23:42:09,470 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 121 selfloop transitions, 129 changer transitions 18/278 dead transitions. [2023-08-29 23:42:09,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 278 transitions, 5775 flow [2023-08-29 23:42:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 23:42:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 23:42:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1571 transitions. [2023-08-29 23:42:09,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667260843731432 [2023-08-29 23:42:09,472 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1571 transitions. [2023-08-29 23:42:09,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1571 transitions. [2023-08-29 23:42:09,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:09,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1571 transitions. [2023-08-29 23:42:09,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.8181818181818) internal successors, (1571), 11 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:09,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:09,477 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:09,477 INFO L175 Difference]: Start difference. First operand has 183 places, 225 transitions, 4933 flow. Second operand 11 states and 1571 transitions. [2023-08-29 23:42:09,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 278 transitions, 5775 flow [2023-08-29 23:42:09,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 278 transitions, 5672 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-08-29 23:42:09,610 INFO L231 Difference]: Finished difference. Result has 184 places, 218 transitions, 4977 flow [2023-08-29 23:42:09,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4977, PETRI_PLACES=184, PETRI_TRANSITIONS=218} [2023-08-29 23:42:09,610 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 120 predicate places. [2023-08-29 23:42:09,610 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 218 transitions, 4977 flow [2023-08-29 23:42:09,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:09,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:09,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:09,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-29 23:42:09,611 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:09,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:09,612 INFO L85 PathProgramCache]: Analyzing trace with hash -177458077, now seen corresponding path program 26 times [2023-08-29 23:42:09,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:09,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39242885] [2023-08-29 23:42:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:09,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:09,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:09,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39242885] [2023-08-29 23:42:09,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39242885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:09,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:09,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:42:09,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700529605] [2023-08-29 23:42:09,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:09,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:42:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:09,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:42:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:42:09,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:09,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 218 transitions, 4977 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:09,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:09,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:09,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:10,352 INFO L130 PetriNetUnfolder]: 1178/2601 cut-off events. [2023-08-29 23:42:10,352 INFO L131 PetriNetUnfolder]: For 68155/68525 co-relation queries the response was YES. [2023-08-29 23:42:10,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 2601 events. 1178/2601 cut-off events. For 68155/68525 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18575 event pairs, 354 based on Foata normal form. 86/2655 useless extension candidates. Maximal degree in co-relation 18358. Up to 1907 conditions per place. [2023-08-29 23:42:10,372 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 165 selfloop transitions, 23 changer transitions 17/215 dead transitions. [2023-08-29 23:42:10,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 215 transitions, 4836 flow [2023-08-29 23:42:10,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 23:42:10,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 23:42:10,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1401 transitions. [2023-08-29 23:42:10,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45784313725490194 [2023-08-29 23:42:10,374 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1401 transitions. [2023-08-29 23:42:10,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1401 transitions. [2023-08-29 23:42:10,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:10,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1401 transitions. [2023-08-29 23:42:10,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.1) internal successors, (1401), 10 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:10,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:10,378 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:10,378 INFO L175 Difference]: Start difference. First operand has 184 places, 218 transitions, 4977 flow. Second operand 10 states and 1401 transitions. [2023-08-29 23:42:10,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 215 transitions, 4836 flow [2023-08-29 23:42:10,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 4467 flow, removed 22 selfloop flow, removed 14 redundant places. [2023-08-29 23:42:10,467 INFO L231 Difference]: Finished difference. Result has 172 places, 176 transitions, 3586 flow [2023-08-29 23:42:10,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=172, PETRI_TRANSITIONS=176} [2023-08-29 23:42:10,468 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2023-08-29 23:42:10,468 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 176 transitions, 3586 flow [2023-08-29 23:42:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:10,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:10,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:10,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-29 23:42:10,469 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:10,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash -977182193, now seen corresponding path program 27 times [2023-08-29 23:42:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:10,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095104993] [2023-08-29 23:42:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:10,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:10,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:10,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095104993] [2023-08-29 23:42:10,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095104993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:10,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:10,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:42:10,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446467422] [2023-08-29 23:42:10,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:10,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:42:10,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:10,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:42:10,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:42:10,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:10,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 176 transitions, 3586 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:10,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:10,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:10,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:11,116 INFO L130 PetriNetUnfolder]: 763/1728 cut-off events. [2023-08-29 23:42:11,116 INFO L131 PetriNetUnfolder]: For 28332/28610 co-relation queries the response was YES. [2023-08-29 23:42:11,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10917 conditions, 1728 events. 763/1728 cut-off events. For 28332/28610 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11308 event pairs, 194 based on Foata normal form. 114/1828 useless extension candidates. Maximal degree in co-relation 10876. Up to 1106 conditions per place. [2023-08-29 23:42:11,128 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 113 selfloop transitions, 29 changer transitions 25/177 dead transitions. [2023-08-29 23:42:11,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 177 transitions, 3217 flow [2023-08-29 23:42:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-29 23:42:11,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-29 23:42:11,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1541 transitions. [2023-08-29 23:42:11,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45781342840166367 [2023-08-29 23:42:11,131 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1541 transitions. [2023-08-29 23:42:11,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1541 transitions. [2023-08-29 23:42:11,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:11,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1541 transitions. [2023-08-29 23:42:11,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.0909090909091) internal successors, (1541), 11 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,136 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,136 INFO L175 Difference]: Start difference. First operand has 172 places, 176 transitions, 3586 flow. Second operand 11 states and 1541 transitions. [2023-08-29 23:42:11,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 177 transitions, 3217 flow [2023-08-29 23:42:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 177 transitions, 3082 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-08-29 23:42:11,186 INFO L231 Difference]: Finished difference. Result has 163 places, 129 transitions, 2191 flow [2023-08-29 23:42:11,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2191, PETRI_PLACES=163, PETRI_TRANSITIONS=129} [2023-08-29 23:42:11,187 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 99 predicate places. [2023-08-29 23:42:11,187 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 129 transitions, 2191 flow [2023-08-29 23:42:11,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:11,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:11,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-29 23:42:11,188 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:11,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1035502487, now seen corresponding path program 28 times [2023-08-29 23:42:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665082263] [2023-08-29 23:42:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:11,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:11,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665082263] [2023-08-29 23:42:11,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665082263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:11,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:11,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-29 23:42:11,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776957056] [2023-08-29 23:42:11,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:11,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:42:11,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:11,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:42:11,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:42:11,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-08-29 23:42:11,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 129 transitions, 2191 flow. Second operand has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:11,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-08-29 23:42:11,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:11,881 INFO L130 PetriNetUnfolder]: 756/1587 cut-off events. [2023-08-29 23:42:11,881 INFO L131 PetriNetUnfolder]: For 22006/22178 co-relation queries the response was YES. [2023-08-29 23:42:11,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1587 events. 756/1587 cut-off events. For 22006/22178 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9562 event pairs, 250 based on Foata normal form. 48/1617 useless extension candidates. Maximal degree in co-relation 9309. Up to 1185 conditions per place. [2023-08-29 23:42:11,892 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 86 selfloop transitions, 11 changer transitions 46/152 dead transitions. [2023-08-29 23:42:11,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 152 transitions, 2470 flow [2023-08-29 23:42:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-29 23:42:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-29 23:42:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2029 transitions. [2023-08-29 23:42:11,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420479302832244 [2023-08-29 23:42:11,894 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2029 transitions. [2023-08-29 23:42:11,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2029 transitions. [2023-08-29 23:42:11,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:11,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2029 transitions. [2023-08-29 23:42:11,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.26666666666668) internal successors, (2029), 15 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,898 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,898 INFO L175 Difference]: Start difference. First operand has 163 places, 129 transitions, 2191 flow. Second operand 15 states and 2029 transitions. [2023-08-29 23:42:11,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 152 transitions, 2470 flow [2023-08-29 23:42:11,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 152 transitions, 2078 flow, removed 55 selfloop flow, removed 34 redundant places. [2023-08-29 23:42:11,925 INFO L231 Difference]: Finished difference. Result has 139 places, 92 transitions, 1169 flow [2023-08-29 23:42:11,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1169, PETRI_PLACES=139, PETRI_TRANSITIONS=92} [2023-08-29 23:42:11,926 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-08-29 23:42:11,926 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 92 transitions, 1169 flow [2023-08-29 23:42:11,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:11,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:11,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:11,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-29 23:42:11,927 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:11,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1988646801, now seen corresponding path program 29 times [2023-08-29 23:42:11,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:11,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667139058] [2023-08-29 23:42:11,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:11,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:12,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667139058] [2023-08-29 23:42:12,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667139058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:12,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:12,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:42:12,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152735171] [2023-08-29 23:42:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:42:12,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:12,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:42:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:42:12,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:12,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 92 transitions, 1169 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:12,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:12,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:12,307 INFO L130 PetriNetUnfolder]: 143/356 cut-off events. [2023-08-29 23:42:12,307 INFO L131 PetriNetUnfolder]: For 4132/4228 co-relation queries the response was YES. [2023-08-29 23:42:12,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 356 events. 143/356 cut-off events. For 4132/4228 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1510 event pairs, 2 based on Foata normal form. 80/436 useless extension candidates. Maximal degree in co-relation 2067. Up to 110 conditions per place. [2023-08-29 23:42:12,310 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 37 selfloop transitions, 15 changer transitions 27/87 dead transitions. [2023-08-29 23:42:12,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 87 transitions, 976 flow [2023-08-29 23:42:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:42:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:42:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1261 transitions. [2023-08-29 23:42:12,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578794480755265 [2023-08-29 23:42:12,312 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1261 transitions. [2023-08-29 23:42:12,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1261 transitions. [2023-08-29 23:42:12,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:12,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1261 transitions. [2023-08-29 23:42:12,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.11111111111111) internal successors, (1261), 9 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,316 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,316 INFO L175 Difference]: Start difference. First operand has 139 places, 92 transitions, 1169 flow. Second operand 9 states and 1261 transitions. [2023-08-29 23:42:12,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 87 transitions, 976 flow [2023-08-29 23:42:12,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 87 transitions, 740 flow, removed 46 selfloop flow, removed 34 redundant places. [2023-08-29 23:42:12,325 INFO L231 Difference]: Finished difference. Result has 94 places, 43 transitions, 300 flow [2023-08-29 23:42:12,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=94, PETRI_TRANSITIONS=43} [2023-08-29 23:42:12,326 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-08-29 23:42:12,326 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 43 transitions, 300 flow [2023-08-29 23:42:12,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:42:12,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:12,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-29 23:42:12,327 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-29 23:42:12,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:42:12,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2058135143, now seen corresponding path program 30 times [2023-08-29 23:42:12,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:42:12,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675787446] [2023-08-29 23:42:12,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:42:12,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:42:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:42:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:42:12,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:42:12,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675787446] [2023-08-29 23:42:12,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675787446] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:42:12,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:42:12,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 23:42:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979457027] [2023-08-29 23:42:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:42:12,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:42:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:42:12,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:42:12,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:42:12,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-08-29 23:42:12,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 43 transitions, 300 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:42:12,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-08-29 23:42:12,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:42:12,613 INFO L130 PetriNetUnfolder]: 36/103 cut-off events. [2023-08-29 23:42:12,613 INFO L131 PetriNetUnfolder]: For 572/572 co-relation queries the response was YES. [2023-08-29 23:42:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 103 events. 36/103 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 279 event pairs, 0 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 501. Up to 23 conditions per place. [2023-08-29 23:42:12,614 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-29 23:42:12,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 42 transitions, 350 flow [2023-08-29 23:42:12,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:42:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:42:12,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1226 transitions. [2023-08-29 23:42:12,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44517066085693535 [2023-08-29 23:42:12,615 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1226 transitions. [2023-08-29 23:42:12,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1226 transitions. [2023-08-29 23:42:12,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:42:12,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1226 transitions. [2023-08-29 23:42:12,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.22222222222223) internal successors, (1226), 9 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,618 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,618 INFO L175 Difference]: Start difference. First operand has 94 places, 43 transitions, 300 flow. Second operand 9 states and 1226 transitions. [2023-08-29 23:42:12,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 42 transitions, 350 flow [2023-08-29 23:42:12,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 201 flow, removed 20 selfloop flow, removed 29 redundant places. [2023-08-29 23:42:12,619 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-08-29 23:42:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, 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=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-08-29 23:42:12,619 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-08-29 23:42:12,620 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-08-29 23:42:12,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:42:12,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-08-29 23:42:12,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-08-29 23:42:12,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-08-29 23:42:12,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-08-29 23:42:12,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-08-29 23:42:12,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-08-29 23:42:12,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-08-29 23:42:12,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-08-29 23:42:12,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-08-29 23:42:12,637 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-08-29 23:42:12,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2023-08-29 23:42:12,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2023-08-29 23:42:12,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2023-08-29 23:42:12,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2023-08-29 23:42:12,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2023-08-29 23:42:12,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2023-08-29 23:42:12,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-29 23:42:12,639 INFO L445 BasicCegarLoop]: Path program histogram: [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:42:12,642 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 23:42:12,643 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 23:42:12,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:42:12 BasicIcfg [2023-08-29 23:42:12,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 23:42:12,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 23:42:12,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 23:42:12,646 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 23:42:12,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:41:30" (3/4) ... [2023-08-29 23:42:12,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 23:42:12,656 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 23:42:12,656 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 23:42:12,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 23:42:12,657 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-08-29 23:42:12,664 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-08-29 23:42:12,664 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 23:42:12,664 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 23:42:12,664 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 23:42:12,695 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 23:42:12,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 23:42:12,696 INFO L158 Benchmark]: Toolchain (without parser) took 43300.23ms. Allocated memory was 73.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 50.6MB in the beginning and 754.4MB in the end (delta: -703.8MB). Peak memory consumption was 672.7MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,697 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:42:12,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.13ms. Allocated memory is still 73.4MB. Free memory was 50.4MB in the beginning and 38.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.98ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 36.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,697 INFO L158 Benchmark]: Boogie Preprocessor took 54.32ms. Allocated memory is still 73.4MB. Free memory was 36.9MB in the beginning and 35.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,698 INFO L158 Benchmark]: RCFGBuilder took 594.44ms. Allocated memory is still 73.4MB. Free memory was 35.3MB in the beginning and 29.7MB in the end (delta: 5.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,698 INFO L158 Benchmark]: TraceAbstraction took 42281.90ms. Allocated memory was 73.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 29.1MB in the beginning and 758.6MB in the end (delta: -729.5MB). Peak memory consumption was 648.3MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,698 INFO L158 Benchmark]: Witness Printer took 49.92ms. Allocated memory is still 1.5GB. Free memory was 758.6MB in the beginning and 754.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 23:42:12,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 36.5MB in the beginning and 36.5MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.13ms. Allocated memory is still 73.4MB. Free memory was 50.4MB in the beginning and 38.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.98ms. Allocated memory is still 73.4MB. Free memory was 38.9MB in the beginning and 36.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.32ms. Allocated memory is still 73.4MB. Free memory was 36.9MB in the beginning and 35.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 594.44ms. Allocated memory is still 73.4MB. Free memory was 35.3MB in the beginning and 29.7MB in the end (delta: 5.6MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 42281.90ms. Allocated memory was 73.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 29.1MB in the beginning and 758.6MB in the end (delta: -729.5MB). Peak memory consumption was 648.3MB. Max. memory is 16.1GB. * Witness Printer took 49.92ms. Allocated memory is still 1.5GB. Free memory was 758.6MB in the beginning and 754.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.9s, 166 PlacesBefore, 64 PlacesAfterwards, 155 TransitionsBefore, 51 TransitionsAfterwards, 1702 CoEnabledTransitionPairs, 8 FixpointIterations, 90 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 143 TotalNumberOfCompositions, 9805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3770, independent: 3504, independent conditional: 0, independent unconditional: 3504, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 819, independent: 786, independent conditional: 0, independent unconditional: 786, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3770, independent: 2718, independent conditional: 0, independent unconditional: 2718, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 819, unknown conditional: 0, unknown unconditional: 819] , Statistics on independence cache: Total cache size (in pairs): 226, Positive cache size: 207, Positive conditional cache size: 0, Positive unconditional cache size: 207, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 146]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 195 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 42.1s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 27.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3483 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2819 mSDsluCounter, 1115 SdHoareTripleChecker+Invalid, 5.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1021 mSDsCounter, 730 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12766 IncrementalHoareTripleChecker+Invalid, 13496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 730 mSolverCounterUnsat, 94 mSDtfsCounter, 12766 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4977occurred in iteration=34, InterpolantAutomatonStates: 359, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 1069 NumberOfCodeBlocks, 1069 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 4347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 23:42:12,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE