./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.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-3.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 c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 --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 23:41:09,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:41:09,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:41:09,511 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:41:09,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:41:09,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:41:09,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:41:09,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:41:09,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:41:09,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:41:09,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:41:09,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:41:09,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:41:09,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:41:09,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:41:09,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:41:09,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:41:09,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:41:09,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:41:09,528 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:41:09,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:41:09,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:41:09,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:41:09,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:41:09,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:41:09,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:41:09,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:41:09,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:41:09,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:41:09,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:41:09,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:41:09,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:41:09,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:41:09,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:41:09,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:41:09,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:41:09,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:41:09,542 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:41:09,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:41:09,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:41:09,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:41:09,545 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:41:09,577 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:41:09,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:41:09,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:41:09,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:41:09,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:41:09,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:41:09,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:41:09,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:41:09,582 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:41:09,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:41:09,583 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:41:09,583 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:41:09,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:41:09,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:41:09,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:41:09,584 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:41:09,584 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:41:09,584 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:41:09,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:41:09,585 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:41:09,585 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:41:09,585 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:41:09,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:41:09,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:41:09,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:41:09,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:41:09,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:41:09,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:41:09,587 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:41:09,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:41:09,587 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:41:09,587 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:41:09,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:41:09,588 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:41:09,588 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:41:09,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:41:09,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:41:09,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:41:09,922 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:41:09,922 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:41:09,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-29 23:41:11,113 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:41:11,329 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:41:11,330 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-29 23:41:11,345 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3424853ab/a5fe9c9a888a437f812a87700eddea70/FLAGfa4c3651d [2023-08-29 23:41:11,363 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3424853ab/a5fe9c9a888a437f812a87700eddea70 [2023-08-29 23:41:11,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:41:11,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:41:11,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:41:11,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:41:11,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:41:11,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38674eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11, skipping insertion in model container [2023-08-29 23:41:11,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,383 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:41:11,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:41:11,548 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-3.wvr.c[3089,3102] [2023-08-29 23:41:11,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:41:11,567 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:41:11,602 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-3.wvr.c[3089,3102] [2023-08-29 23:41:11,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:41:11,616 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:41:11,616 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:41:11,622 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:41:11,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11 WrapperNode [2023-08-29 23:41:11,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:41:11,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:41:11,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:41:11,624 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:41:11,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,677 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-08-29 23:41:11,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:41:11,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:41:11,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:41:11,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:41:11,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,718 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:41:11,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:41:11,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:41:11,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:41:11,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (1/1) ... [2023-08-29 23:41:11,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:41:11,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:41:11,757 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 23:41:11,776 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 23:41:11,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:41:11,788 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:41:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:41:11,790 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:41:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:41:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:41:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:41:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:41:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:41:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:41:11,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 23:41:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 23:41:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:41:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:41:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:41:11,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:41:11,794 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 23:41:11,899 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:41:11,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:41:12,193 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:41:12,262 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:41:12,262 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 23:41:12,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:41:12 BoogieIcfgContainer [2023-08-29 23:41:12,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:41:12,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:41:12,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:41:12,277 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:41:12,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:41:11" (1/3) ... [2023-08-29 23:41:12,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d737b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:41:12, skipping insertion in model container [2023-08-29 23:41:12,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:41:11" (2/3) ... [2023-08-29 23:41:12,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d737b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:41:12, skipping insertion in model container [2023-08-29 23:41:12,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:41:12" (3/3) ... [2023-08-29 23:41:12,280 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-08-29 23:41:12,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:41:12,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 23:41:12,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:41:12,358 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 23:41:12,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 135 transitions, 294 flow [2023-08-29 23:41:12,449 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2023-08-29 23:41:12,450 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:41:12,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-29 23:41:12,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 135 transitions, 294 flow [2023-08-29 23:41:12,462 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 128 transitions, 274 flow [2023-08-29 23:41:12,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:41:12,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 128 transitions, 274 flow [2023-08-29 23:41:12,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 128 transitions, 274 flow [2023-08-29 23:41:12,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 128 transitions, 274 flow [2023-08-29 23:41:12,530 INFO L130 PetriNetUnfolder]: 2/128 cut-off events. [2023-08-29 23:41:12,530 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:41:12,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 2/128 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-29 23:41:12,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 930 [2023-08-29 23:41:17,653 INFO L134 LiptonReduction]: Checked pairs total: 4778 [2023-08-29 23:41:17,653 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-29 23:41:17,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:41:17,670 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;@62006288, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:41:17,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 23:41:17,672 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 23:41:17,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:41:17,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:17,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:41:17,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:17,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash 532, now seen corresponding path program 1 times [2023-08-29 23:41:17,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536767527] [2023-08-29 23:41:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:17,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:17,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:17,804 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 23:41:17,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:17,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536767527] [2023-08-29 23:41:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536767527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:17,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:41:17,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544930831] [2023-08-29 23:41:17,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:17,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:41:17,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:41:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:41:17,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 258 [2023-08-29 23:41:17,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:17,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:17,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 258 [2023-08-29 23:41:17,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:18,015 INFO L130 PetriNetUnfolder]: 729/1236 cut-off events. [2023-08-29 23:41:18,015 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-29 23:41:18,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 1236 events. 729/1236 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6244 event pairs, 729 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2040. Up to 1149 conditions per place. [2023-08-29 23:41:18,026 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 32 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2023-08-29 23:41:18,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 36 transitions, 154 flow [2023-08-29 23:41:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:41:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:41:18,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 269 transitions. [2023-08-29 23:41:18,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213178294573644 [2023-08-29 23:41:18,039 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 269 transitions. [2023-08-29 23:41:18,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 269 transitions. [2023-08-29 23:41:18,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:18,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 269 transitions. [2023-08-29 23:41:18,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:18,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 23:41:18,050 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 258.0) internal successors, (774), 3 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 23:41:18,051 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 96 flow. Second operand 2 states and 269 transitions. [2023-08-29 23:41:18,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 36 transitions, 154 flow [2023-08-29 23:41:18,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 142 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 23:41:18,057 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 78 flow [2023-08-29 23:41:18,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2023-08-29 23:41:18,061 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-08-29 23:41:18,062 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 78 flow [2023-08-29 23:41:18,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:18,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:18,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:41:18,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:41:18,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:18,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 524284, now seen corresponding path program 1 times [2023-08-29 23:41:18,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:18,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093087643] [2023-08-29 23:41:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:18,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:18,441 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 23:41:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:18,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093087643] [2023-08-29 23:41:18,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093087643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:18,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:18,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780911500] [2023-08-29 23:41:18,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:18,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:18,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:18,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 258 [2023-08-29 23:41:18,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 23:41:18,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:18,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 258 [2023-08-29 23:41:18,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:18,633 INFO L130 PetriNetUnfolder]: 702/1187 cut-off events. [2023-08-29 23:41:18,634 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 23:41:18,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2312 conditions, 1187 events. 702/1187 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5942 event pairs, 702 based on Foata normal form. 0/990 useless extension candidates. Maximal degree in co-relation 2309. Up to 1101 conditions per place. [2023-08-29 23:41:18,640 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 29 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-29 23:41:18,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 134 flow [2023-08-29 23:41:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:18,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-29 23:41:18,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4754521963824289 [2023-08-29 23:41:18,643 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-29 23:41:18,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-29 23:41:18,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:18,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-29 23:41:18,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:18,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:18,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:18,647 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 78 flow. Second operand 3 states and 368 transitions. [2023-08-29 23:41:18,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 134 flow [2023-08-29 23:41:18,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:41:18,648 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 76 flow [2023-08-29 23:41:18,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=76, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-29 23:41:18,649 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -8 predicate places. [2023-08-29 23:41:18,649 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 76 flow [2023-08-29 23:41:18,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 23:41:18,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:18,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:41:18,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:41:18,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:18,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:18,650 INFO L85 PathProgramCache]: Analyzing trace with hash 524282, now seen corresponding path program 1 times [2023-08-29 23:41:18,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:18,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498836458] [2023-08-29 23:41:18,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:18,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:18,711 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 23:41:18,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:18,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498836458] [2023-08-29 23:41:18,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498836458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:18,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:18,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:18,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92946958] [2023-08-29 23:41:18,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:18,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:18,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:18,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:18,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:18,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-29 23:41:18,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:18,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:18,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-29 23:41:18,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:18,879 INFO L130 PetriNetUnfolder]: 675/1138 cut-off events. [2023-08-29 23:41:18,879 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 23:41:18,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 1138 events. 675/1138 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5684 event pairs, 675 based on Foata normal form. 0/961 useless extension candidates. Maximal degree in co-relation 2214. Up to 1054 conditions per place. [2023-08-29 23:41:18,885 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 27 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-29 23:41:18,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 128 flow [2023-08-29 23:41:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:18,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-29 23:41:18,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2023-08-29 23:41:18,887 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-29 23:41:18,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-29 23:41:18,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:18,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-29 23:41:18,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 23:41:18,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:18,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:18,891 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 76 flow. Second operand 3 states and 351 transitions. [2023-08-29 23:41:18,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 128 flow [2023-08-29 23:41:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 32 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:18,893 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 73 flow [2023-08-29 23:41:18,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2023-08-29 23:41:18,894 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -9 predicate places. [2023-08-29 23:41:18,894 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 73 flow [2023-08-29 23:41:18,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:18,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:18,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:41:18,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:41:18,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:18,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash 503847967, now seen corresponding path program 1 times [2023-08-29 23:41:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087172947] [2023-08-29 23:41:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:18,961 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 23:41:18,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:18,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087172947] [2023-08-29 23:41:18,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087172947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:18,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:18,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018898850] [2023-08-29 23:41:18,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:18,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:18,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:18,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-29 23:41:18,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 23:41:18,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:18,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-29 23:41:18,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:19,096 INFO L130 PetriNetUnfolder]: 648/1087 cut-off events. [2023-08-29 23:41:19,108 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 23:41:19,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1087 events. 648/1087 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5354 event pairs, 648 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 2117. Up to 1007 conditions per place. [2023-08-29 23:41:19,113 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-29 23:41:19,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 121 flow [2023-08-29 23:41:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:19,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2023-08-29 23:41:19,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45478036175710596 [2023-08-29 23:41:19,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2023-08-29 23:41:19,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2023-08-29 23:41:19,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:19,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2023-08-29 23:41:19,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:19,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,119 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 73 flow. Second operand 3 states and 352 transitions. [2023-08-29 23:41:19,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 121 flow [2023-08-29 23:41:19,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:19,120 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 70 flow [2023-08-29 23:41:19,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2023-08-29 23:41:19,121 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -10 predicate places. [2023-08-29 23:41:19,122 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 70 flow [2023-08-29 23:41:19,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 23:41:19,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:19,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:41:19,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:41:19,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:19,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:19,123 INFO L85 PathProgramCache]: Analyzing trace with hash 503847968, now seen corresponding path program 1 times [2023-08-29 23:41:19,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:19,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111537373] [2023-08-29 23:41:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:19,158 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 23:41:19,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:19,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111537373] [2023-08-29 23:41:19,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111537373] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:19,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828664001] [2023-08-29 23:41:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:19,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:19,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:19,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-29 23:41:19,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:19,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:19,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-29 23:41:19,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:19,295 INFO L130 PetriNetUnfolder]: 621/1036 cut-off events. [2023-08-29 23:41:19,295 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 23:41:19,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 1036 events. 621/1036 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5086 event pairs, 621 based on Foata normal form. 0/901 useless extension candidates. Maximal degree in co-relation 2020. Up to 960 conditions per place. [2023-08-29 23:41:19,301 INFO L137 encePairwiseOnDemand]: 255/258 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-29 23:41:19,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 114 flow [2023-08-29 23:41:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-29 23:41:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-08-29 23:41:19,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-29 23:41:19,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-29 23:41:19,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:19,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-29 23:41:19,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 23:41:19,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,307 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 70 flow. Second operand 3 states and 347 transitions. [2023-08-29 23:41:19,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 114 flow [2023-08-29 23:41:19,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:19,309 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 67 flow [2023-08-29 23:41:19,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2023-08-29 23:41:19,310 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-29 23:41:19,310 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 67 flow [2023-08-29 23:41:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:19,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:19,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:19,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:41:19,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:19,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1133397031, now seen corresponding path program 1 times [2023-08-29 23:41:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:19,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230244463] [2023-08-29 23:41:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:19,534 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 23:41:19,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:19,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230244463] [2023-08-29 23:41:19,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230244463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:19,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:19,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:41:19,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548270235] [2023-08-29 23:41:19,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:19,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:41:19,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:41:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:41:19,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 258 [2023-08-29 23:41:19,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 23:41:19,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:19,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 258 [2023-08-29 23:41:19,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:19,709 INFO L130 PetriNetUnfolder]: 477/812 cut-off events. [2023-08-29 23:41:19,709 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 23:41:19,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1593 conditions, 812 events. 477/812 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3759 event pairs, 477 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 1589. Up to 752 conditions per place. [2023-08-29 23:41:19,714 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 22 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-29 23:41:19,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 27 transitions, 111 flow [2023-08-29 23:41:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:19,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-08-29 23:41:19,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069767441860465 [2023-08-29 23:41:19,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-08-29 23:41:19,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-08-29 23:41:19,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:19,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-08-29 23:41:19,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:19,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,719 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 67 flow. Second operand 3 states and 315 transitions. [2023-08-29 23:41:19,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 27 transitions, 111 flow [2023-08-29 23:41:19,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 27 transitions, 110 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:19,721 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 66 flow [2023-08-29 23:41:19,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-08-29 23:41:19,721 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-29 23:41:19,722 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 66 flow [2023-08-29 23:41:19,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 23:41:19,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:19,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:19,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:41:19,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:19,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1133397033, now seen corresponding path program 1 times [2023-08-29 23:41:19,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:19,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212801552] [2023-08-29 23:41:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:19,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:19,754 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 23:41:19,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:19,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212801552] [2023-08-29 23:41:19,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212801552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:19,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:19,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:41:19,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154470684] [2023-08-29 23:41:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:19,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:41:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:41:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:41:19,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-29 23:41:19,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 23:41:19,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:19,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-29 23:41:19,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:19,859 INFO L130 PetriNetUnfolder]: 333/588 cut-off events. [2023-08-29 23:41:19,859 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 23:41:19,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1162 conditions, 588 events. 333/588 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2573 event pairs, 333 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 1158. Up to 544 conditions per place. [2023-08-29 23:41:19,862 INFO L137 encePairwiseOnDemand]: 256/258 looper letters, 21 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-29 23:41:19,862 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 108 flow [2023-08-29 23:41:19,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:41:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:41:19,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-29 23:41:19,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483204134366925 [2023-08-29 23:41:19,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-29 23:41:19,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-29 23:41:19,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:19,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-29 23:41:19,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 23:41:19,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states 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 23:41:19,867 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 66 flow. Second operand 3 states and 347 transitions. [2023-08-29 23:41:19,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 108 flow [2023-08-29 23:41:19,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:19,869 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 65 flow [2023-08-29 23:41:19,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-29 23:41:19,869 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-29 23:41:19,870 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 65 flow [2023-08-29 23:41:19,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 23:41:19,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:19,870 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] [2023-08-29 23:41:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:41:19,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:19,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash 291274630, now seen corresponding path program 1 times [2023-08-29 23:41:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958853053] [2023-08-29 23:41:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:20,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:41:20,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:20,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958853053] [2023-08-29 23:41:20,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958853053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:20,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:20,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:41:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052101595] [2023-08-29 23:41:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:20,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:41:20,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:41:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:41:20,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:20,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 23:41:20,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:20,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:20,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:20,951 INFO L130 PetriNetUnfolder]: 1139/1840 cut-off events. [2023-08-29 23:41:20,951 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 23:41:20,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3737 conditions, 1840 events. 1139/1840 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8537 event pairs, 428 based on Foata normal form. 2/1842 useless extension candidates. Maximal degree in co-relation 3733. Up to 646 conditions per place. [2023-08-29 23:41:20,958 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 53 selfloop transitions, 7 changer transitions 17/77 dead transitions. [2023-08-29 23:41:20,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 77 transitions, 331 flow [2023-08-29 23:41:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:41:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:41:20,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2023-08-29 23:41:20,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48372093023255813 [2023-08-29 23:41:20,960 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2023-08-29 23:41:20,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2023-08-29 23:41:20,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:20,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2023-08-29 23:41:20,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states 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 23:41:20,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 23:41:20,964 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 23:41:20,964 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 65 flow. Second operand 5 states and 624 transitions. [2023-08-29 23:41:20,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 77 transitions, 331 flow [2023-08-29 23:41:20,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 77 transitions, 330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:41:20,967 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 109 flow [2023-08-29 23:41:20,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-29 23:41:20,969 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -5 predicate places. [2023-08-29 23:41:20,969 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 109 flow [2023-08-29 23:41:20,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 23:41:20,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:20,970 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] [2023-08-29 23:41:20,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 23:41:20,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:20,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash 266636022, now seen corresponding path program 2 times [2023-08-29 23:41:20,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:20,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113559431] [2023-08-29 23:41:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:20,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:21,147 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 23:41:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:21,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113559431] [2023-08-29 23:41:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113559431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:21,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:21,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297515012] [2023-08-29 23:41:21,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:21,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:21,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:21,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:21,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:21,164 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:41:21,164 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:21,164 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:21,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:21,329 INFO L130 PetriNetUnfolder]: 374/707 cut-off events. [2023-08-29 23:41:21,330 INFO L131 PetriNetUnfolder]: For 59/61 co-relation queries the response was YES. [2023-08-29 23:41:21,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 707 events. 374/707 cut-off events. For 59/61 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3325 event pairs, 57 based on Foata normal form. 28/721 useless extension candidates. Maximal degree in co-relation 1516. Up to 359 conditions per place. [2023-08-29 23:41:21,334 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 50 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2023-08-29 23:41:21,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 330 flow [2023-08-29 23:41:21,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:21,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 830 transitions. [2023-08-29 23:41:21,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45957918050941304 [2023-08-29 23:41:21,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 830 transitions. [2023-08-29 23:41:21,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 830 transitions. [2023-08-29 23:41:21,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:21,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 830 transitions. [2023-08-29 23:41:21,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 0 states have call successors, (0), 0 states 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 23:41:21,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:21,342 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:21,342 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 109 flow. Second operand 7 states and 830 transitions. [2023-08-29 23:41:21,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 330 flow [2023-08-29 23:41:21,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 319 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-29 23:41:21,345 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 188 flow [2023-08-29 23:41:21,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2023-08-29 23:41:21,345 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-29 23:41:21,346 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 188 flow [2023-08-29 23:41:21,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:41:21,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:21,346 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] [2023-08-29 23:41:21,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 23:41:21,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:21,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:21,347 INFO L85 PathProgramCache]: Analyzing trace with hash -819796504, now seen corresponding path program 3 times [2023-08-29 23:41:21,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:21,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121998348] [2023-08-29 23:41:21,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:21,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:21,511 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 23:41:21,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:21,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121998348] [2023-08-29 23:41:21,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121998348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:21,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:21,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000041060] [2023-08-29 23:41:21,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:21,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:21,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:21,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:21,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:41:21,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:21,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:21,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:21,677 INFO L130 PetriNetUnfolder]: 283/562 cut-off events. [2023-08-29 23:41:21,678 INFO L131 PetriNetUnfolder]: For 335/373 co-relation queries the response was YES. [2023-08-29 23:41:21,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1549 conditions, 562 events. 283/562 cut-off events. For 335/373 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2490 event pairs, 52 based on Foata normal form. 36/592 useless extension candidates. Maximal degree in co-relation 1539. Up to 296 conditions per place. [2023-08-29 23:41:21,681 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 36 selfloop transitions, 11 changer transitions 12/68 dead transitions. [2023-08-29 23:41:21,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 371 flow [2023-08-29 23:41:21,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 822 transitions. [2023-08-29 23:41:21,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45514950166112955 [2023-08-29 23:41:21,684 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 822 transitions. [2023-08-29 23:41:21,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 822 transitions. [2023-08-29 23:41:21,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:21,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 822 transitions. [2023-08-29 23:41:21,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.42857142857143) internal successors, (822), 7 states have internal predecessors, (822), 0 states have call successors, (0), 0 states 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 23:41:21,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:21,689 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:21,689 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 188 flow. Second operand 7 states and 822 transitions. [2023-08-29 23:41:21,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 371 flow [2023-08-29 23:41:21,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:41:21,692 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 215 flow [2023-08-29 23:41:21,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2023-08-29 23:41:21,693 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2023-08-29 23:41:21,693 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 215 flow [2023-08-29 23:41:21,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:41:21,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:21,693 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] [2023-08-29 23:41:21,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 23:41:21,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:21,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:21,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1292674230, now seen corresponding path program 4 times [2023-08-29 23:41:21,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:21,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974635348] [2023-08-29 23:41:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:21,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:21,859 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 23:41:21,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:21,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974635348] [2023-08-29 23:41:21,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974635348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:21,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:21,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:41:21,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038391139] [2023-08-29 23:41:21,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:21,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:41:21,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:21,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:41:21,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:41:21,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:21,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:41:21,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:21,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:21,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:21,993 INFO L130 PetriNetUnfolder]: 175/370 cut-off events. [2023-08-29 23:41:21,993 INFO L131 PetriNetUnfolder]: For 412/430 co-relation queries the response was YES. [2023-08-29 23:41:21,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 370 events. 175/370 cut-off events. For 412/430 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1497 event pairs, 46 based on Foata normal form. 12/379 useless extension candidates. Maximal degree in co-relation 1163. Up to 262 conditions per place. [2023-08-29 23:41:21,996 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 39 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2023-08-29 23:41:21,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 358 flow [2023-08-29 23:41:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:41:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:41:21,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-29 23:41:21,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4542635658914729 [2023-08-29 23:41:21,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-29 23:41:21,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-29 23:41:21,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:21,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-29 23:41:22,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states 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 23:41:22,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 23:41:22,002 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 258.0) internal successors, (1548), 6 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states 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 23:41:22,003 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 215 flow. Second operand 5 states and 586 transitions. [2023-08-29 23:41:22,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 358 flow [2023-08-29 23:41:22,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 336 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-29 23:41:22,006 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 232 flow [2023-08-29 23:41:22,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-29 23:41:22,007 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2023-08-29 23:41:22,007 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 232 flow [2023-08-29 23:41:22,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.66666666666667) internal successors, (676), 6 states have internal predecessors, (676), 0 states have call successors, (0), 0 states 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 23:41:22,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:22,007 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] [2023-08-29 23:41:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 23:41:22,008 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:22,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash -123018630, now seen corresponding path program 5 times [2023-08-29 23:41:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35866686] [2023-08-29 23:41:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:22,192 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 23:41:22,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:22,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35866686] [2023-08-29 23:41:22,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35866686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:22,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:22,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850820761] [2023-08-29 23:41:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:22,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:22,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:22,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:22,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:22,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:22,457 INFO L130 PetriNetUnfolder]: 179/424 cut-off events. [2023-08-29 23:41:22,457 INFO L131 PetriNetUnfolder]: For 461/475 co-relation queries the response was YES. [2023-08-29 23:41:22,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1333 conditions, 424 events. 179/424 cut-off events. For 461/475 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2029 event pairs, 20 based on Foata normal form. 42/466 useless extension candidates. Maximal degree in co-relation 1319. Up to 139 conditions per place. [2023-08-29 23:41:22,460 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 50 selfloop transitions, 19 changer transitions 18/93 dead transitions. [2023-08-29 23:41:22,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 592 flow [2023-08-29 23:41:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:41:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:41:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1393 transitions. [2023-08-29 23:41:22,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44993540051679587 [2023-08-29 23:41:22,464 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1393 transitions. [2023-08-29 23:41:22,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1393 transitions. [2023-08-29 23:41:22,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:22,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1393 transitions. [2023-08-29 23:41:22,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.08333333333333) internal successors, (1393), 12 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states 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 23:41:22,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states 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 23:41:22,472 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states 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 23:41:22,472 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 232 flow. Second operand 12 states and 1393 transitions. [2023-08-29 23:41:22,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 592 flow [2023-08-29 23:41:22,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 93 transitions, 576 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 23:41:22,476 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 320 flow [2023-08-29 23:41:22,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=320, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2023-08-29 23:41:22,477 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2023-08-29 23:41:22,477 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 320 flow [2023-08-29 23:41:22,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:22,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:22,477 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] [2023-08-29 23:41:22,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 23:41:22,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:22,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1257210990, now seen corresponding path program 6 times [2023-08-29 23:41:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:22,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153875523] [2023-08-29 23:41:22,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:22,675 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 23:41:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153875523] [2023-08-29 23:41:22,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153875523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:22,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:22,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676596465] [2023-08-29 23:41:22,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:22,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:22,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:22,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:22,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:22,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:22,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:22,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:22,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:22,867 INFO L130 PetriNetUnfolder]: 134/325 cut-off events. [2023-08-29 23:41:22,867 INFO L131 PetriNetUnfolder]: For 921/945 co-relation queries the response was YES. [2023-08-29 23:41:22,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 325 events. 134/325 cut-off events. For 921/945 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1381 event pairs, 20 based on Foata normal form. 20/345 useless extension candidates. Maximal degree in co-relation 1245. Up to 133 conditions per place. [2023-08-29 23:41:22,871 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 45 selfloop transitions, 17 changer transitions 6/74 dead transitions. [2023-08-29 23:41:22,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 74 transitions, 545 flow [2023-08-29 23:41:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:41:22,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:41:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1048 transitions. [2023-08-29 23:41:22,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45133505598621876 [2023-08-29 23:41:22,876 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1048 transitions. [2023-08-29 23:41:22,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1048 transitions. [2023-08-29 23:41:22,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:22,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1048 transitions. [2023-08-29 23:41:22,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states 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 23:41:22,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 23:41:22,882 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 23:41:22,882 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 320 flow. Second operand 9 states and 1048 transitions. [2023-08-29 23:41:22,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 74 transitions, 545 flow [2023-08-29 23:41:22,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 500 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-29 23:41:22,888 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 297 flow [2023-08-29 23:41:22,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2023-08-29 23:41:22,889 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 22 predicate places. [2023-08-29 23:41:22,889 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 297 flow [2023-08-29 23:41:22,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:22,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:22,890 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] [2023-08-29 23:41:22,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 23:41:22,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:22,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 475515792, now seen corresponding path program 7 times [2023-08-29 23:41:22,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:22,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185883963] [2023-08-29 23:41:22,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:22,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:23,100 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 23:41:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185883963] [2023-08-29 23:41:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185883963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:23,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422220686] [2023-08-29 23:41:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:23,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:23,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:23,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:23,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:23,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 297 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:23,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:23,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:23,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:23,319 INFO L130 PetriNetUnfolder]: 116/281 cut-off events. [2023-08-29 23:41:23,319 INFO L131 PetriNetUnfolder]: For 580/596 co-relation queries the response was YES. [2023-08-29 23:41:23,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045 conditions, 281 events. 116/281 cut-off events. For 580/596 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1099 event pairs, 24 based on Foata normal form. 12/291 useless extension candidates. Maximal degree in co-relation 1027. Up to 129 conditions per place. [2023-08-29 23:41:23,322 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 39 selfloop transitions, 13 changer transitions 11/69 dead transitions. [2023-08-29 23:41:23,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 498 flow [2023-08-29 23:41:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:41:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:41:23,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1044 transitions. [2023-08-29 23:41:23,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496124031007752 [2023-08-29 23:41:23,326 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1044 transitions. [2023-08-29 23:41:23,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1044 transitions. [2023-08-29 23:41:23,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:23,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1044 transitions. [2023-08-29 23:41:23,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states 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 23:41:23,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 23:41:23,332 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 23:41:23,333 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 297 flow. Second operand 9 states and 1044 transitions. [2023-08-29 23:41:23,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 498 flow [2023-08-29 23:41:23,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 453 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-29 23:41:23,338 INFO L231 Difference]: Finished difference. Result has 70 places, 41 transitions, 252 flow [2023-08-29 23:41:23,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=70, PETRI_TRANSITIONS=41} [2023-08-29 23:41:23,339 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 21 predicate places. [2023-08-29 23:41:23,339 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 41 transitions, 252 flow [2023-08-29 23:41:23,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:23,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:23,340 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] [2023-08-29 23:41:23,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 23:41:23,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:23,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:23,341 INFO L85 PathProgramCache]: Analyzing trace with hash -886332258, now seen corresponding path program 8 times [2023-08-29 23:41:23,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:23,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340342608] [2023-08-29 23:41:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:23,543 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 23:41:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340342608] [2023-08-29 23:41:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340342608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:23,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862874923] [2023-08-29 23:41:23,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:23,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:23,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:23,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:23,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 41 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:23,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:23,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:23,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:23,668 INFO L130 PetriNetUnfolder]: 104/269 cut-off events. [2023-08-29 23:41:23,668 INFO L131 PetriNetUnfolder]: For 528/548 co-relation queries the response was YES. [2023-08-29 23:41:23,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 269 events. 104/269 cut-off events. For 528/548 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1068 event pairs, 16 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 933. Up to 106 conditions per place. [2023-08-29 23:41:23,670 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 36 selfloop transitions, 21 changer transitions 5/68 dead transitions. [2023-08-29 23:41:23,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 68 transitions, 479 flow [2023-08-29 23:41:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:23,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 816 transitions. [2023-08-29 23:41:23,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45182724252491696 [2023-08-29 23:41:23,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 816 transitions. [2023-08-29 23:41:23,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 816 transitions. [2023-08-29 23:41:23,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:23,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 816 transitions. [2023-08-29 23:41:23,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.57142857142857) internal successors, (816), 7 states have internal predecessors, (816), 0 states have call successors, (0), 0 states 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 23:41:23,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:23,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:23,679 INFO L175 Difference]: Start difference. First operand has 70 places, 41 transitions, 252 flow. Second operand 7 states and 816 transitions. [2023-08-29 23:41:23,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 68 transitions, 479 flow [2023-08-29 23:41:23,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 437 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-08-29 23:41:23,682 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 324 flow [2023-08-29 23:41:23,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=324, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-08-29 23:41:23,683 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2023-08-29 23:41:23,683 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 324 flow [2023-08-29 23:41:23,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:23,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:23,684 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] [2023-08-29 23:41:23,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 23:41:23,684 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:23,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:23,685 INFO L85 PathProgramCache]: Analyzing trace with hash 22650432, now seen corresponding path program 9 times [2023-08-29 23:41:23,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:23,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709172943] [2023-08-29 23:41:23,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:23,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:23,883 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 23:41:23,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709172943] [2023-08-29 23:41:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709172943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:23,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:23,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049380075] [2023-08-29 23:41:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:23,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:23,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:23,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:23,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 324 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:23,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:23,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:23,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:24,043 INFO L130 PetriNetUnfolder]: 87/232 cut-off events. [2023-08-29 23:41:24,044 INFO L131 PetriNetUnfolder]: For 466/478 co-relation queries the response was YES. [2023-08-29 23:41:24,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 232 events. 87/232 cut-off events. For 466/478 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 885 event pairs, 8 based on Foata normal form. 20/252 useless extension candidates. Maximal degree in co-relation 843. Up to 64 conditions per place. [2023-08-29 23:41:24,046 INFO L137 encePairwiseOnDemand]: 250/258 looper letters, 29 selfloop transitions, 16 changer transitions 18/67 dead transitions. [2023-08-29 23:41:24,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 488 flow [2023-08-29 23:41:24,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:41:24,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:41:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1038 transitions. [2023-08-29 23:41:24,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470284237726098 [2023-08-29 23:41:24,049 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1038 transitions. [2023-08-29 23:41:24,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1038 transitions. [2023-08-29 23:41:24,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:24,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1038 transitions. [2023-08-29 23:41:24,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 115.33333333333333) internal successors, (1038), 9 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states 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 23:41:24,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 23:41:24,056 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 258.0) internal successors, (2580), 10 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states 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 23:41:24,056 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 324 flow. Second operand 9 states and 1038 transitions. [2023-08-29 23:41:24,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 488 flow [2023-08-29 23:41:24,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 433 flow, removed 17 selfloop flow, removed 6 redundant places. [2023-08-29 23:41:24,059 INFO L231 Difference]: Finished difference. Result has 66 places, 39 transitions, 244 flow [2023-08-29 23:41:24,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=244, PETRI_PLACES=66, PETRI_TRANSITIONS=39} [2023-08-29 23:41:24,060 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2023-08-29 23:41:24,060 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 39 transitions, 244 flow [2023-08-29 23:41:24,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:24,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:24,061 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] [2023-08-29 23:41:24,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 23:41:24,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:24,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1676023802, now seen corresponding path program 10 times [2023-08-29 23:41:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:24,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683756720] [2023-08-29 23:41:24,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:24,269 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 23:41:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683756720] [2023-08-29 23:41:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683756720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 23:41:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30691119] [2023-08-29 23:41:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:41:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:41:24,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:41:24,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:24,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 39 transitions, 244 flow. Second operand has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:24,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:24,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:24,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:24,421 INFO L130 PetriNetUnfolder]: 48/135 cut-off events. [2023-08-29 23:41:24,421 INFO L131 PetriNetUnfolder]: For 323/331 co-relation queries the response was YES. [2023-08-29 23:41:24,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 135 events. 48/135 cut-off events. For 323/331 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 399 event pairs, 8 based on Foata normal form. 8/143 useless extension candidates. Maximal degree in co-relation 490. Up to 83 conditions per place. [2023-08-29 23:41:24,422 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 30 selfloop transitions, 5 changer transitions 6/45 dead transitions. [2023-08-29 23:41:24,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 45 transitions, 338 flow [2023-08-29 23:41:24,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:24,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 798 transitions. [2023-08-29 23:41:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418604651162791 [2023-08-29 23:41:24,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 798 transitions. [2023-08-29 23:41:24,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 798 transitions. [2023-08-29 23:41:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:24,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 798 transitions. [2023-08-29 23:41:24,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.0) internal successors, (798), 7 states have internal predecessors, (798), 0 states have call successors, (0), 0 states 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 23:41:24,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:24,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:24,431 INFO L175 Difference]: Start difference. First operand has 66 places, 39 transitions, 244 flow. Second operand 7 states and 798 transitions. [2023-08-29 23:41:24,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 45 transitions, 338 flow [2023-08-29 23:41:24,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 45 transitions, 290 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-29 23:41:24,433 INFO L231 Difference]: Finished difference. Result has 60 places, 35 transitions, 185 flow [2023-08-29 23:41:24,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=35} [2023-08-29 23:41:24,434 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-08-29 23:41:24,434 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 35 transitions, 185 flow [2023-08-29 23:41:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.75) internal successors, (894), 8 states have internal predecessors, (894), 0 states have call successors, (0), 0 states 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 23:41:24,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:24,435 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] [2023-08-29 23:41:24,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 23:41:24,435 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:24,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2075464244, now seen corresponding path program 11 times [2023-08-29 23:41:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147131082] [2023-08-29 23:41:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:24,645 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 23:41:24,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:24,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147131082] [2023-08-29 23:41:24,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147131082] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:24,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:24,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:24,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40859887] [2023-08-29 23:41:24,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:24,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:24,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:24,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:24,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:24,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 258 [2023-08-29 23:41:24,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 35 transitions, 185 flow. Second operand has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 23:41:24,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:24,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 258 [2023-08-29 23:41:24,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:24,804 INFO L130 PetriNetUnfolder]: 41/108 cut-off events. [2023-08-29 23:41:24,804 INFO L131 PetriNetUnfolder]: For 188/200 co-relation queries the response was YES. [2023-08-29 23:41:24,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 108 events. 41/108 cut-off events. For 188/200 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 244 event pairs, 8 based on Foata normal form. 10/118 useless extension candidates. Maximal degree in co-relation 360. Up to 60 conditions per place. [2023-08-29 23:41:24,805 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 24 selfloop transitions, 3 changer transitions 11/41 dead transitions. [2023-08-29 23:41:24,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 41 transitions, 259 flow [2023-08-29 23:41:24,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:24,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:24,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 779 transitions. [2023-08-29 23:41:24,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43133997785160577 [2023-08-29 23:41:24,808 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 779 transitions. [2023-08-29 23:41:24,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 779 transitions. [2023-08-29 23:41:24,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:24,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 779 transitions. [2023-08-29 23:41:24,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.28571428571429) internal successors, (779), 7 states have internal predecessors, (779), 0 states have call successors, (0), 0 states 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 23:41:24,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:24,813 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:24,813 INFO L175 Difference]: Start difference. First operand has 60 places, 35 transitions, 185 flow. Second operand 7 states and 779 transitions. [2023-08-29 23:41:24,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 41 transitions, 259 flow [2023-08-29 23:41:24,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 242 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-08-29 23:41:24,815 INFO L231 Difference]: Finished difference. Result has 57 places, 28 transitions, 123 flow [2023-08-29 23:41:24,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=28} [2023-08-29 23:41:24,816 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 8 predicate places. [2023-08-29 23:41:24,816 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 123 flow [2023-08-29 23:41:24,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 23:41:24,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:41:24,817 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] [2023-08-29 23:41:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 23:41:24,817 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:41:24,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:41:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1476419154, now seen corresponding path program 12 times [2023-08-29 23:41:24,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:41:24,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937010749] [2023-08-29 23:41:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:41:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:41:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:41:24,992 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 23:41:24,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:41:24,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937010749] [2023-08-29 23:41:24,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937010749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:41:24,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:41:24,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-29 23:41:24,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907833384] [2023-08-29 23:41:24,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:41:24,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:41:24,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:41:24,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:41:24,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:41:25,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 258 [2023-08-29 23:41:25,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 28 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:25,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:41:25,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 258 [2023-08-29 23:41:25,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:41:25,070 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-08-29 23:41:25,070 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-29 23:41:25,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 34 events. 9/34 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 112. Up to 9 conditions per place. [2023-08-29 23:41:25,071 INFO L137 encePairwiseOnDemand]: 252/258 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-29 23:41:25,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 20 transitions, 119 flow [2023-08-29 23:41:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 23:41:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 23:41:25,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 782 transitions. [2023-08-29 23:41:25,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330011074197121 [2023-08-29 23:41:25,074 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 782 transitions. [2023-08-29 23:41:25,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 782 transitions. [2023-08-29 23:41:25,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:41:25,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 782 transitions. [2023-08-29 23:41:25,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.71428571428571) internal successors, (782), 7 states have internal predecessors, (782), 0 states have call successors, (0), 0 states 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 23:41:25,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:25,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 258.0) internal successors, (2064), 8 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states 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 23:41:25,078 INFO L175 Difference]: Start difference. First operand has 57 places, 28 transitions, 123 flow. Second operand 7 states and 782 transitions. [2023-08-29 23:41:25,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 20 transitions, 119 flow [2023-08-29 23:41:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 20 transitions, 98 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-08-29 23:41:25,079 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-29 23:41:25,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-29 23:41:25,080 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, -11 predicate places. [2023-08-29 23:41:25,080 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-29 23:41:25,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:41:25,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-29 23:41:25,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-29 23:41:25,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-29 23:41:25,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-29 23:41:25,083 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-29 23:41:25,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-29 23:41:25,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-29 23:41:25,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-29 23:41:25,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-29 23:41:25,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-29 23:41:25,084 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-29 23:41:25,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-29 23:41:25,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-29 23:41:25,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-29 23:41:25,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-29 23:41:25,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-29 23:41:25,085 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-29 23:41:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 23:41:25,086 INFO L445 BasicCegarLoop]: Path program histogram: [12, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:41:25,089 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 23:41:25,089 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 23:41:25,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:41:25 BasicIcfg [2023-08-29 23:41:25,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 23:41:25,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 23:41:25,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 23:41:25,092 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 23:41:25,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:41:12" (3/4) ... [2023-08-29 23:41:25,095 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 23:41:25,099 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-29 23:41:25,099 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-29 23:41:25,099 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-29 23:41:25,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-08-29 23:41:25,103 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 23:41:25,104 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 23:41:25,104 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 23:41:25,132 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 23:41:25,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 23:41:25,133 INFO L158 Benchmark]: Toolchain (without parser) took 13764.96ms. Allocated memory was 67.1MB in the beginning and 209.7MB in the end (delta: 142.6MB). Free memory was 36.3MB in the beginning and 89.6MB in the end (delta: -53.3MB). Peak memory consumption was 90.3MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,133 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:41:25,133 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.46ms. Allocated memory is still 67.1MB. Free memory was 36.0MB in the beginning and 40.5MB in the end (delta: -4.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.54ms. Allocated memory is still 67.1MB. Free memory was 40.3MB in the beginning and 38.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,134 INFO L158 Benchmark]: Boogie Preprocessor took 47.35ms. Allocated memory is still 67.1MB. Free memory was 38.4MB in the beginning and 37.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,134 INFO L158 Benchmark]: RCFGBuilder took 538.56ms. Allocated memory is still 67.1MB. Free memory was 37.0MB in the beginning and 32.6MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,135 INFO L158 Benchmark]: TraceAbstraction took 12825.47ms. Allocated memory was 67.1MB in the beginning and 209.7MB in the end (delta: 142.6MB). Free memory was 32.1MB in the beginning and 92.8MB in the end (delta: -60.7MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,135 INFO L158 Benchmark]: Witness Printer took 40.49ms. Allocated memory is still 209.7MB. Free memory was 92.8MB in the beginning and 89.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 23:41:25,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.46ms. Allocated memory is still 67.1MB. Free memory was 36.0MB in the beginning and 40.5MB in the end (delta: -4.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.54ms. Allocated memory is still 67.1MB. Free memory was 40.3MB in the beginning and 38.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.35ms. Allocated memory is still 67.1MB. Free memory was 38.4MB in the beginning and 37.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 538.56ms. Allocated memory is still 67.1MB. Free memory was 37.0MB in the beginning and 32.6MB in the end (delta: 4.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12825.47ms. Allocated memory was 67.1MB in the beginning and 209.7MB in the end (delta: 142.6MB). Free memory was 32.1MB in the beginning and 92.8MB in the end (delta: -60.7MB). Peak memory consumption was 81.6MB. Max. memory is 16.1GB. * Witness Printer took 40.49ms. Allocated memory is still 209.7MB. Free memory was 92.8MB in the beginning and 89.6MB in the end (delta: 3.1MB). 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: 5.2s, 136 PlacesBefore, 49 PlacesAfterwards, 128 TransitionsBefore, 39 TransitionsAfterwards, 930 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 123 TotalNumberOfCompositions, 4778 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2035, independent: 1856, independent conditional: 0, independent unconditional: 1856, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 492, independent: 473, independent conditional: 0, independent unconditional: 473, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2035, independent: 1383, independent conditional: 0, independent unconditional: 1383, dependent: 160, dependent conditional: 0, dependent unconditional: 160, unknown: 492, unknown conditional: 0, unknown unconditional: 492] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 132, Positive conditional cache size: 0, Positive unconditional cache size: 132, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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: 124]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 101]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 locations, 17 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: 12.7s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1116 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 732 mSDsluCounter, 463 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 327 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2769 IncrementalHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 136 mSDtfsCounter, 2769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=324occurred in iteration=15, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 343 NumberOfCodeBlocks, 343 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 324 ConstructedInterpolants, 0 QuantifiedInterpolants, 1698 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 23:41:25,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE