./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:29:30,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:29:30,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:29:30,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:29:30,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:29:30,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:29:30,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:29:30,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:29:30,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:29:30,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:29:30,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:29:30,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:29:30,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:29:30,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:29:30,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:29:30,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:29:30,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:29:30,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:29:30,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:29:30,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:29:30,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:29:30,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:29:30,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:29:30,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:29:30,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:29:30,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:29:30,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:29:30,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:29:30,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:29:30,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:29:30,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:29:30,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:29:30,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:29:30,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:29:30,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:29:30,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:29:30,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:29:30,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:29:30,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:29:30,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:29:30,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:29:30,588 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:29:30,612 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:29:30,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:29:30,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:29:30,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:29:30,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:29:30,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:29:30,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:29:30,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:29:30,615 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:29:30,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:29:30,615 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:29:30,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:29:30,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:29:30,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:29:30,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:29:30,616 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:29:30,616 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:29:30,617 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:29:30,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:29:30,617 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:29:30,617 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:29:30,617 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:29:30,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:29:30,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:29:30,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:29:30,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:29:30,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:29:30,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:29:30,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:29:30,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:29:30,619 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:29:30,619 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:29:30,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:29:30,619 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:29:30,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:29:30,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:29:30,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:29:30,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:29:30,876 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:29:30,876 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:29:30,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-08-31 23:29:31,800 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:29:32,036 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:29:32,037 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-08-31 23:29:32,045 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae53c881/1b3b9098765a4c829cd80c0c21ac5f42/FLAG7b3563f7f [2023-08-31 23:29:32,055 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ae53c881/1b3b9098765a4c829cd80c0c21ac5f42 [2023-08-31 23:29:32,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:29:32,066 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:29:32,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:29:32,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:29:32,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:29:32,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd9da8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32, skipping insertion in model container [2023-08-31 23:29:32,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:29:32,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:29:32,249 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2023-08-31 23:29:32,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:29:32,383 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:29:32,393 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i[945,958] [2023-08-31 23:29:32,423 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:29:32,454 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:29:32,454 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:29:32,459 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:29:32,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32 WrapperNode [2023-08-31 23:29:32,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:29:32,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:29:32,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:29:32,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:29:32,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,502 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-31 23:29:32,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:29:32,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:29:32,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:29:32,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:29:32,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,533 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:29:32,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:29:32,541 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:29:32,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:29:32,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (1/1) ... [2023-08-31 23:29:32,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:29:32,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:29:32,564 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 23:29:32,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 23:29:32,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:29:32,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:29:32,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:29:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:29:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:29:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:29:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:29:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:29:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:29:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:29:32,589 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:29:32,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:29:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:29:32,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:29:32,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:29:32,591 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:29:32,697 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:29:32,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:29:32,827 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:29:32,832 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:29:32,832 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:29:32,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:29:32 BoogieIcfgContainer [2023-08-31 23:29:32,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:29:32,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:29:32,835 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:29:32,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:29:32,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:29:32" (1/3) ... [2023-08-31 23:29:32,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f74aae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:29:32, skipping insertion in model container [2023-08-31 23:29:32,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:29:32" (2/3) ... [2023-08-31 23:29:32,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f74aae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:29:32, skipping insertion in model container [2023-08-31 23:29:32,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:29:32" (3/3) ... [2023-08-31 23:29:32,839 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2023-08-31 23:29:32,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:29:32,856 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:29:32,856 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:29:32,928 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:29:32,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 95 transitions, 205 flow [2023-08-31 23:29:33,009 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2023-08-31 23:29:33,009 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:29:33,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 2/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:29:33,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 95 transitions, 205 flow [2023-08-31 23:29:33,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 88 transitions, 185 flow [2023-08-31 23:29:33,017 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:29:33,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-31 23:29:33,027 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 88 transitions, 185 flow [2023-08-31 23:29:33,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 88 transitions, 185 flow [2023-08-31 23:29:33,049 INFO L130 PetriNetUnfolder]: 2/88 cut-off events. [2023-08-31 23:29:33,049 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:29:33,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:29:33,052 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:29:35,209 INFO L134 LiptonReduction]: Checked pairs total: 3133 [2023-08-31 23:29:35,210 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-31 23:29:35,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:29:35,227 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;@235352d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:29:35,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:29:35,228 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:29:35,229 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:29:35,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:35,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:29:35,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:35,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:35,234 INFO L85 PathProgramCache]: Analyzing trace with hash 339, now seen corresponding path program 1 times [2023-08-31 23:29:35,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:35,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95939943] [2023-08-31 23:29:35,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:35,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:35,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:35,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95939943] [2023-08-31 23:29:35,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95939943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:35,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:35,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:29:35,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616487120] [2023-08-31 23:29:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:35,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:29:35,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:29:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:29:35,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 184 [2023-08-31 23:29:35,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:35,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:35,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 184 [2023-08-31 23:29:35,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:35,419 INFO L130 PetriNetUnfolder]: 272/455 cut-off events. [2023-08-31 23:29:35,419 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:29:35,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 455 events. 272/455 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1986 event pairs, 272 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 907. Up to 433 conditions per place. [2023-08-31 23:29:35,423 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-31 23:29:35,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-08-31 23:29:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:29:35,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:29:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 201 transitions. [2023-08-31 23:29:35,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461956521739131 [2023-08-31 23:29:35,433 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 201 transitions. [2023-08-31 23:29:35,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 201 transitions. [2023-08-31 23:29:35,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:35,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 201 transitions. [2023-08-31 23:29:35,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:35,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:35,440 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:35,442 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 201 transitions. [2023-08-31 23:29:35,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-08-31 23:29:35,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:29:35,444 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-08-31 23:29:35,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-08-31 23:29:35,448 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-31 23:29:35,448 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-08-31 23:29:35,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 89.5) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:35,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:35,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:35,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:29:35,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:35,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:35,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1617700446, now seen corresponding path program 1 times [2023-08-31 23:29:35,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:35,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547090718] [2023-08-31 23:29:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:35,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:35,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:35,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547090718] [2023-08-31 23:29:35,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547090718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:35,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:35,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:29:35,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458198208] [2023-08-31 23:29:35,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:35,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:29:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:35,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:29:35,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:29:36,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 184 [2023-08-31 23:29:36,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:36,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 184 [2023-08-31 23:29:36,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:36,108 INFO L130 PetriNetUnfolder]: 218/391 cut-off events. [2023-08-31 23:29:36,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:29:36,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 391 events. 218/391 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1703 event pairs, 12 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 768. Up to 222 conditions per place. [2023-08-31 23:29:36,110 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 24 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-31 23:29:36,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 124 flow [2023-08-31 23:29:36,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:29:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:29:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 474 transitions. [2023-08-31 23:29:36,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42934782608695654 [2023-08-31 23:29:36,113 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 474 transitions. [2023-08-31 23:29:36,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 474 transitions. [2023-08-31 23:29:36,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:36,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 474 transitions. [2023-08-31 23:29:36,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,117 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,117 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 474 transitions. [2023-08-31 23:29:36,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 124 flow [2023-08-31 23:29:36,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:29:36,118 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 50 flow [2023-08-31 23:29:36,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-31 23:29:36,119 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-08-31 23:29:36,119 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 50 flow [2023-08-31 23:29:36,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.5) internal successors, (453), 6 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:36,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:36,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:29:36,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:36,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1617700489, now seen corresponding path program 1 times [2023-08-31 23:29:36,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:36,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94856204] [2023-08-31 23:29:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:36,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:36,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:36,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94856204] [2023-08-31 23:29:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94856204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:29:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941696744] [2023-08-31 23:29:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:36,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:29:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:29:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:29:36,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-31 23:29:36,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:36,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-31 23:29:36,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:36,382 INFO L130 PetriNetUnfolder]: 907/1434 cut-off events. [2023-08-31 23:29:36,383 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2023-08-31 23:29:36,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 1434 events. 907/1434 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6769 event pairs, 253 based on Foata normal form. 98/1532 useless extension candidates. Maximal degree in co-relation 3051. Up to 757 conditions per place. [2023-08-31 23:29:36,387 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 27 selfloop transitions, 6 changer transitions 19/52 dead transitions. [2023-08-31 23:29:36,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 236 flow [2023-08-31 23:29:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:29:36,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:29:36,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 449 transitions. [2023-08-31 23:29:36,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880434782608696 [2023-08-31 23:29:36,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 449 transitions. [2023-08-31 23:29:36,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 449 transitions. [2023-08-31 23:29:36,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:36,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 449 transitions. [2023-08-31 23:29:36,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.8) internal successors, (449), 5 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,392 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 50 flow. Second operand 5 states and 449 transitions. [2023-08-31 23:29:36,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 236 flow [2023-08-31 23:29:36,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 52 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:29:36,394 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 104 flow [2023-08-31 23:29:36,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=104, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-31 23:29:36,394 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-31 23:29:36,395 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 104 flow [2023-08-31 23:29:36,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:36,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:36,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:29:36,395 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:36,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1390850216, now seen corresponding path program 1 times [2023-08-31 23:29:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:36,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967212683] [2023-08-31 23:29:36,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:36,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:36,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967212683] [2023-08-31 23:29:36,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967212683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:36,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:36,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:29:36,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140061666] [2023-08-31 23:29:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:36,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:29:36,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:29:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:29:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-31 23:29:36,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:36,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-31 23:29:36,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:36,604 INFO L130 PetriNetUnfolder]: 733/1188 cut-off events. [2023-08-31 23:29:36,604 INFO L131 PetriNetUnfolder]: For 972/972 co-relation queries the response was YES. [2023-08-31 23:29:36,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3597 conditions, 1188 events. 733/1188 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5378 event pairs, 117 based on Foata normal form. 74/1262 useless extension candidates. Maximal degree in co-relation 3590. Up to 579 conditions per place. [2023-08-31 23:29:36,608 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 33 selfloop transitions, 10 changer transitions 24/67 dead transitions. [2023-08-31 23:29:36,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 67 transitions, 429 flow [2023-08-31 23:29:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:29:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:29:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 616 transitions. [2023-08-31 23:29:36,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2023-08-31 23:29:36,610 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 616 transitions. [2023-08-31 23:29:36,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 616 transitions. [2023-08-31 23:29:36,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:36,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 616 transitions. [2023-08-31 23:29:36,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,614 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 104 flow. Second operand 7 states and 616 transitions. [2023-08-31 23:29:36,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 67 transitions, 429 flow [2023-08-31 23:29:36,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:29:36,617 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 181 flow [2023-08-31 23:29:36,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-08-31 23:29:36,618 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-31 23:29:36,618 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 181 flow [2023-08-31 23:29:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.0) internal successors, (405), 5 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:36,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:36,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:29:36,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:36,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 166967338, now seen corresponding path program 1 times [2023-08-31 23:29:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:36,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824160217] [2023-08-31 23:29:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:36,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:36,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824160217] [2023-08-31 23:29:36,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824160217] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:36,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:36,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:29:36,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969345707] [2023-08-31 23:29:36,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:36,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:29:36,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:36,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:29:36,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:29:36,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-31 23:29:36,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:36,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-31 23:29:36,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:36,853 INFO L130 PetriNetUnfolder]: 690/1125 cut-off events. [2023-08-31 23:29:36,853 INFO L131 PetriNetUnfolder]: For 2570/2570 co-relation queries the response was YES. [2023-08-31 23:29:36,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3767 conditions, 1125 events. 690/1125 cut-off events. For 2570/2570 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5022 event pairs, 141 based on Foata normal form. 82/1207 useless extension candidates. Maximal degree in co-relation 3755. Up to 476 conditions per place. [2023-08-31 23:29:36,857 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 30 selfloop transitions, 8 changer transitions 32/70 dead transitions. [2023-08-31 23:29:36,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 517 flow [2023-08-31 23:29:36,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:29:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:29:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 695 transitions. [2023-08-31 23:29:36,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47214673913043476 [2023-08-31 23:29:36,859 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 695 transitions. [2023-08-31 23:29:36,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 695 transitions. [2023-08-31 23:29:36,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:36,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 695 transitions. [2023-08-31 23:29:36,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 86.875) internal successors, (695), 8 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,862 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,862 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 181 flow. Second operand 8 states and 695 transitions. [2023-08-31 23:29:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 517 flow [2023-08-31 23:29:36,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 491 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-31 23:29:36,868 INFO L231 Difference]: Finished difference. Result has 48 places, 26 transitions, 179 flow [2023-08-31 23:29:36,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=179, PETRI_PLACES=48, PETRI_TRANSITIONS=26} [2023-08-31 23:29:36,869 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-31 23:29:36,869 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 26 transitions, 179 flow [2023-08-31 23:29:36,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:36,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:36,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:29:36,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:36,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash 46090409, now seen corresponding path program 1 times [2023-08-31 23:29:36,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:36,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385279046] [2023-08-31 23:29:36,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:36,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:36,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385279046] [2023-08-31 23:29:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385279046] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:36,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:29:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023070857] [2023-08-31 23:29:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:36,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:29:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:29:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:29:36,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-08-31 23:29:36,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 26 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:36,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:36,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-08-31 23:29:36,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,039 INFO L130 PetriNetUnfolder]: 307/516 cut-off events. [2023-08-31 23:29:37,040 INFO L131 PetriNetUnfolder]: For 964/964 co-relation queries the response was YES. [2023-08-31 23:29:37,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 516 events. 307/516 cut-off events. For 964/964 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1887 event pairs, 75 based on Foata normal form. 16/532 useless extension candidates. Maximal degree in co-relation 1828. Up to 343 conditions per place. [2023-08-31 23:29:37,042 INFO L137 encePairwiseOnDemand]: 176/184 looper letters, 31 selfloop transitions, 10 changer transitions 8/49 dead transitions. [2023-08-31 23:29:37,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 359 flow [2023-08-31 23:29:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:29:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:29:37,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 521 transitions. [2023-08-31 23:29:37,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47192028985507245 [2023-08-31 23:29:37,044 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 521 transitions. [2023-08-31 23:29:37,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 521 transitions. [2023-08-31 23:29:37,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 521 transitions. [2023-08-31 23:29:37,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,047 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,047 INFO L175 Difference]: Start difference. First operand has 48 places, 26 transitions, 179 flow. Second operand 6 states and 521 transitions. [2023-08-31 23:29:37,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 359 flow [2023-08-31 23:29:37,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 328 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-31 23:29:37,050 INFO L231 Difference]: Finished difference. Result has 47 places, 27 transitions, 199 flow [2023-08-31 23:29:37,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=47, PETRI_TRANSITIONS=27} [2023-08-31 23:29:37,051 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-31 23:29:37,051 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 27 transitions, 199 flow [2023-08-31 23:29:37,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:29:37,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1710838506, now seen corresponding path program 1 times [2023-08-31 23:29:37,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886415860] [2023-08-31 23:29:37,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886415860] [2023-08-31 23:29:37,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886415860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:29:37,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435020948] [2023-08-31 23:29:37,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:29:37,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:29:37,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:29:37,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-31 23:29:37,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 27 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-31 23:29:37,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,186 INFO L130 PetriNetUnfolder]: 252/440 cut-off events. [2023-08-31 23:29:37,186 INFO L131 PetriNetUnfolder]: For 975/975 co-relation queries the response was YES. [2023-08-31 23:29:37,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 440 events. 252/440 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1691 event pairs, 103 based on Foata normal form. 18/443 useless extension candidates. Maximal degree in co-relation 1623. Up to 203 conditions per place. [2023-08-31 23:29:37,188 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 24 selfloop transitions, 5 changer transitions 7/39 dead transitions. [2023-08-31 23:29:37,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 311 flow [2023-08-31 23:29:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:29:37,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:29:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 457 transitions. [2023-08-31 23:29:37,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967391304347826 [2023-08-31 23:29:37,190 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 457 transitions. [2023-08-31 23:29:37,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 457 transitions. [2023-08-31 23:29:37,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 457 transitions. [2023-08-31 23:29:37,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.4) internal successors, (457), 5 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,192 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,192 INFO L175 Difference]: Start difference. First operand has 47 places, 27 transitions, 199 flow. Second operand 5 states and 457 transitions. [2023-08-31 23:29:37,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 311 flow [2023-08-31 23:29:37,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 302 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-31 23:29:37,194 INFO L231 Difference]: Finished difference. Result has 49 places, 27 transitions, 211 flow [2023-08-31 23:29:37,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=49, PETRI_TRANSITIONS=27} [2023-08-31 23:29:37,195 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-08-31 23:29:37,195 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 27 transitions, 211 flow [2023-08-31 23:29:37,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:29:37,196 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1292593346, now seen corresponding path program 1 times [2023-08-31 23:29:37,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779034287] [2023-08-31 23:29:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779034287] [2023-08-31 23:29:37,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779034287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:29:37,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320190690] [2023-08-31 23:29:37,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:29:37,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:29:37,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:29:37,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 184 [2023-08-31 23:29:37,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 27 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 184 [2023-08-31 23:29:37,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,348 INFO L130 PetriNetUnfolder]: 308/544 cut-off events. [2023-08-31 23:29:37,348 INFO L131 PetriNetUnfolder]: For 1448/1448 co-relation queries the response was YES. [2023-08-31 23:29:37,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 544 events. 308/544 cut-off events. For 1448/1448 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2247 event pairs, 105 based on Foata normal form. 12/543 useless extension candidates. Maximal degree in co-relation 2118. Up to 213 conditions per place. [2023-08-31 23:29:37,350 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 25 selfloop transitions, 5 changer transitions 12/44 dead transitions. [2023-08-31 23:29:37,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 376 flow [2023-08-31 23:29:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:29:37,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:29:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:29:37,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2023-08-31 23:29:37,352 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:29:37,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:29:37,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:29:37,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,354 INFO L175 Difference]: Start difference. First operand has 49 places, 27 transitions, 211 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:29:37,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 376 flow [2023-08-31 23:29:37,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 345 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-31 23:29:37,357 INFO L231 Difference]: Finished difference. Result has 48 places, 24 transitions, 175 flow [2023-08-31 23:29:37,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=48, PETRI_TRANSITIONS=24} [2023-08-31 23:29:37,357 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-31 23:29:37,357 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 24 transitions, 175 flow [2023-08-31 23:29:37,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:29:37,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1418987132, now seen corresponding path program 2 times [2023-08-31 23:29:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500936616] [2023-08-31 23:29:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500936616] [2023-08-31 23:29:37,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500936616] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:29:37,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12107198] [2023-08-31 23:29:37,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:29:37,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:29:37,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:29:37,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 184 [2023-08-31 23:29:37,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 24 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 184 [2023-08-31 23:29:37,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,513 INFO L130 PetriNetUnfolder]: 201/364 cut-off events. [2023-08-31 23:29:37,513 INFO L131 PetriNetUnfolder]: For 719/719 co-relation queries the response was YES. [2023-08-31 23:29:37,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 364 events. 201/364 cut-off events. For 719/719 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1329 event pairs, 65 based on Foata normal form. 12/376 useless extension candidates. Maximal degree in co-relation 1322. Up to 127 conditions per place. [2023-08-31 23:29:37,514 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 19 selfloop transitions, 2 changer transitions 19/41 dead transitions. [2023-08-31 23:29:37,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 301 flow [2023-08-31 23:29:37,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:29:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:29:37,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 536 transitions. [2023-08-31 23:29:37,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2023-08-31 23:29:37,516 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 536 transitions. [2023-08-31 23:29:37,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 536 transitions. [2023-08-31 23:29:37,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 536 transitions. [2023-08-31 23:29:37,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.33333333333333) internal successors, (536), 6 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,519 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,519 INFO L175 Difference]: Start difference. First operand has 48 places, 24 transitions, 175 flow. Second operand 6 states and 536 transitions. [2023-08-31 23:29:37,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 301 flow [2023-08-31 23:29:37,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 41 transitions, 259 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-08-31 23:29:37,520 INFO L231 Difference]: Finished difference. Result has 46 places, 18 transitions, 87 flow [2023-08-31 23:29:37,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=87, PETRI_PLACES=46, PETRI_TRANSITIONS=18} [2023-08-31 23:29:37,521 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2023-08-31 23:29:37,521 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 18 transitions, 87 flow [2023-08-31 23:29:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:29:37,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash 141469086, now seen corresponding path program 3 times [2023-08-31 23:29:37,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201850707] [2023-08-31 23:29:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201850707] [2023-08-31 23:29:37,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201850707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:29:37,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090759264] [2023-08-31 23:29:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:29:37,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:29:37,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:29:37,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-31 23:29:37,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 18 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-31 23:29:37,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,615 INFO L130 PetriNetUnfolder]: 57/121 cut-off events. [2023-08-31 23:29:37,616 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2023-08-31 23:29:37,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 121 events. 57/121 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 314 event pairs, 31 based on Foata normal form. 4/124 useless extension candidates. Maximal degree in co-relation 362. Up to 94 conditions per place. [2023-08-31 23:29:37,616 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 18 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-08-31 23:29:37,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 25 transitions, 157 flow [2023-08-31 23:29:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:29:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:29:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-31 23:29:37,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2023-08-31 23:29:37,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-31 23:29:37,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-31 23:29:37,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-31 23:29:37,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,619 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,619 INFO L175 Difference]: Start difference. First operand has 46 places, 18 transitions, 87 flow. Second operand 3 states and 278 transitions. [2023-08-31 23:29:37,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 25 transitions, 157 flow [2023-08-31 23:29:37,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 126 flow, removed 6 selfloop flow, removed 11 redundant places. [2023-08-31 23:29:37,620 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 87 flow [2023-08-31 23:29:37,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-31 23:29:37,621 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-31 23:29:37,621 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 87 flow [2023-08-31 23:29:37,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:29:37,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1721410697, now seen corresponding path program 1 times [2023-08-31 23:29:37,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27483955] [2023-08-31 23:29:37,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27483955] [2023-08-31 23:29:37,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27483955] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:29:37,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041689444] [2023-08-31 23:29:37,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:29:37,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:29:37,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:29:37,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-31 23:29:37,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-31 23:29:37,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,736 INFO L130 PetriNetUnfolder]: 26/68 cut-off events. [2023-08-31 23:29:37,736 INFO L131 PetriNetUnfolder]: For 34/42 co-relation queries the response was YES. [2023-08-31 23:29:37,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 68 events. 26/68 cut-off events. For 34/42 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 138 event pairs, 7 based on Foata normal form. 10/75 useless extension candidates. Maximal degree in co-relation 218. Up to 38 conditions per place. [2023-08-31 23:29:37,736 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 19 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2023-08-31 23:29:37,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 171 flow [2023-08-31 23:29:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:29:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:29:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 367 transitions. [2023-08-31 23:29:37,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4986413043478261 [2023-08-31 23:29:37,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 367 transitions. [2023-08-31 23:29:37,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 367 transitions. [2023-08-31 23:29:37,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 367 transitions. [2023-08-31 23:29:37,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,740 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,740 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 87 flow. Second operand 4 states and 367 transitions. [2023-08-31 23:29:37,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 171 flow [2023-08-31 23:29:37,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:29:37,741 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 123 flow [2023-08-31 23:29:37,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-08-31 23:29:37,741 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-08-31 23:29:37,741 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 123 flow [2023-08-31 23:29:37,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:29:37,742 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1226126863, now seen corresponding path program 1 times [2023-08-31 23:29:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509006245] [2023-08-31 23:29:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509006245] [2023-08-31 23:29:37,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509006245] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:29:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486379846] [2023-08-31 23:29:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:29:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:29:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:29:37,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 184 [2023-08-31 23:29:37,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 184 [2023-08-31 23:29:37,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:37,869 INFO L130 PetriNetUnfolder]: 14/44 cut-off events. [2023-08-31 23:29:37,869 INFO L131 PetriNetUnfolder]: For 65/81 co-relation queries the response was YES. [2023-08-31 23:29:37,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 44 events. 14/44 cut-off events. For 65/81 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 2 based on Foata normal form. 12/54 useless extension candidates. Maximal degree in co-relation 162. Up to 21 conditions per place. [2023-08-31 23:29:37,870 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 16 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2023-08-31 23:29:37,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 195 flow [2023-08-31 23:29:37,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:29:37,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:29:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 452 transitions. [2023-08-31 23:29:37,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2023-08-31 23:29:37,871 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 452 transitions. [2023-08-31 23:29:37,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 452 transitions. [2023-08-31 23:29:37,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:37,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 452 transitions. [2023-08-31 23:29:37,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,874 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,874 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 123 flow. Second operand 5 states and 452 transitions. [2023-08-31 23:29:37,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 195 flow [2023-08-31 23:29:37,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 167 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-31 23:29:37,875 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 125 flow [2023-08-31 23:29:37,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2023-08-31 23:29:37,877 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-31 23:29:37,877 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 125 flow [2023-08-31 23:29:37,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:29:37,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:37,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:29:37,878 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:29:37,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:29:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash 376474816, now seen corresponding path program 1 times [2023-08-31 23:29:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:29:37,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875348344] [2023-08-31 23:29:37,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:29:37,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:29:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:29:37,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:29:37,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:29:37,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875348344] [2023-08-31 23:29:37,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875348344] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:29:37,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:29:37,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:29:37,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758704805] [2023-08-31 23:29:37,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:29:37,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:29:37,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:29:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:29:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:29:37,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 184 [2023-08-31 23:29:37,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:37,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:29:37,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 184 [2023-08-31 23:29:37,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:29:38,028 INFO L130 PetriNetUnfolder]: 21/56 cut-off events. [2023-08-31 23:29:38,029 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-08-31 23:29:38,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 56 events. 21/56 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 4 based on Foata normal form. 1/57 useless extension candidates. Maximal degree in co-relation 207. Up to 35 conditions per place. [2023-08-31 23:29:38,029 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-08-31 23:29:38,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 217 flow [2023-08-31 23:29:38,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:29:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:29:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 484 transitions. [2023-08-31 23:29:38,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384057971014493 [2023-08-31 23:29:38,031 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 484 transitions. [2023-08-31 23:29:38,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 484 transitions. [2023-08-31 23:29:38,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:29:38,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 484 transitions. [2023-08-31 23:29:38,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 80.66666666666667) internal successors, (484), 6 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:38,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:38,034 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 184.0) internal successors, (1288), 7 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:38,034 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 125 flow. Second operand 6 states and 484 transitions. [2023-08-31 23:29:38,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 217 flow [2023-08-31 23:29:38,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 29 transitions, 185 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:29:38,035 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-31 23:29:38,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-31 23:29:38,035 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-31 23:29:38,036 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-31 23:29:38,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:29:38,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:29:38,038 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:29:38,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:29:38,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:29:38,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:29:38,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:29:38,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:29:38,039 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:29:38,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:29:38,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:29:38,040 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:29:38,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:29:38,040 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:29:38,042 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:29:38,042 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:29:38,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:29:38 BasicIcfg [2023-08-31 23:29:38,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:29:38,045 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:29:38,045 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:29:38,045 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:29:38,045 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:29:32" (3/4) ... [2023-08-31 23:29:38,047 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:29:38,051 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:29:38,051 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:29:38,051 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:29:38,053 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:29:38,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:29:38,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:29:38,054 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:29:38,072 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:29:38,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:29:38,073 INFO L158 Benchmark]: Toolchain (without parser) took 6006.65ms. Allocated memory was 73.4MB in the beginning and 201.3MB in the end (delta: 127.9MB). Free memory was 50.2MB in the beginning and 143.8MB in the end (delta: -93.6MB). Peak memory consumption was 35.5MB. Max. memory is 16.1GB. [2023-08-31 23:29:38,073 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:29:38,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.48ms. Allocated memory is still 73.4MB. Free memory was 50.0MB in the beginning and 50.1MB in the end (delta: -114.0kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-08-31 23:29:38,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.08ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 47.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:29:38,074 INFO L158 Benchmark]: Boogie Preprocessor took 37.65ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 46.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:29:38,074 INFO L158 Benchmark]: RCFGBuilder took 293.03ms. Allocated memory is still 73.4MB. Free memory was 46.4MB in the beginning and 32.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:29:38,074 INFO L158 Benchmark]: TraceAbstraction took 5209.22ms. Allocated memory was 73.4MB in the beginning and 201.3MB in the end (delta: 127.9MB). Free memory was 31.4MB in the beginning and 146.9MB in the end (delta: -115.5MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-08-31 23:29:38,074 INFO L158 Benchmark]: Witness Printer took 27.93ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:29:38,075 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.48ms. Allocated memory is still 73.4MB. Free memory was 50.0MB in the beginning and 50.1MB in the end (delta: -114.0kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.08ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 47.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.65ms. Allocated memory is still 73.4MB. Free memory was 47.9MB in the beginning and 46.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 293.03ms. Allocated memory is still 73.4MB. Free memory was 46.4MB in the beginning and 32.3MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5209.22ms. Allocated memory was 73.4MB in the beginning and 201.3MB in the end (delta: 127.9MB). Free memory was 31.4MB in the beginning and 146.9MB in the end (delta: -115.5MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Witness Printer took 27.93ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 96 PlacesBefore, 35 PlacesAfterwards, 88 TransitionsBefore, 26 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 89 TotalNumberOfCompositions, 3133 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1766, independent: 1673, independent conditional: 0, independent unconditional: 1673, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 843, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1766, independent: 855, independent conditional: 0, independent unconditional: 855, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 843, unknown conditional: 0, unknown unconditional: 843] , Statistics on independence cache: Total cache size (in pairs): 73, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: 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, 118 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.1s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 522 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 365 mSDsluCounter, 215 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1086 IncrementalHoareTripleChecker+Invalid, 1156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 75 mSDtfsCounter, 1086 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=7, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 157 NumberOfCodeBlocks, 157 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:29:38,098 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