./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_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/rfi003_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 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 --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 23:26:04,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:26:04,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:26:04,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:26:04,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:26:04,629 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:26:04,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:26:04,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:26:04,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:26:04,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:26:04,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:26:04,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:26:04,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:26:04,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:26:04,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:26:04,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:26:04,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:26:04,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:26:04,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:26:04,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:26:04,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:26:04,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:26:04,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:26:04,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:26:04,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:26:04,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:26:04,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:26:04,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:26:04,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:26:04,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:26:04,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:26:04,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:26:04,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:26:04,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:26:04,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:26:04,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:26:04,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:26:04,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:26:04,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:26:04,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:26:04,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:26:04,671 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:26:04,692 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:26:04,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:26:04,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:26:04,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:26:04,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:26:04,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:26:04,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:26:04,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:26:04,695 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:26:04,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:26:04,695 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:26:04,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:26:04,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:26:04,697 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:26:04,697 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:26:04,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:26:04,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:26:04,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:26:04,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:26:04,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:26:04,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:26:04,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:26:04,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:26:04,698 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:26:04,698 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:26:04,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:26:04,699 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:26:04,699 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503cbc793fb2369a7e5308c15a611fe38888f935ec98bb5d473194a0a60e31e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:26:04,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:26:04,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:26:04,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:26:04,927 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:26:04,927 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:26:04,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-31 23:26:05,871 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:26:06,064 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:26:06,065 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_tso.i [2023-08-31 23:26:06,081 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1c04948/633ea4a7370f4047b1ae06121266f995/FLAGe7c7d5959 [2023-08-31 23:26:06,098 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b1c04948/633ea4a7370f4047b1ae06121266f995 [2023-08-31 23:26:06,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:26:06,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:26:06,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:26:06,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:26:06,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:26:06,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c9de36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06, skipping insertion in model container [2023-08-31 23:26:06,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:26:06,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:26:06,249 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/rfi003_tso.i[944,957] [2023-08-31 23:26:06,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:26:06,423 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:26:06,430 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/rfi003_tso.i[944,957] [2023-08-31 23:26:06,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:26:06,503 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:26:06,503 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:26:06,507 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:26:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06 WrapperNode [2023-08-31 23:26:06,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:26:06,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:26:06,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:26:06,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:26:06,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,566 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-08-31 23:26:06,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:26:06,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:26:06,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:26:06,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:26:06,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,593 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,603 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:26:06,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:26:06,607 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:26:06,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:26:06,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (1/1) ... [2023-08-31 23:26:06,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:26:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:26:06,635 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 23:26:06,659 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 23:26:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:26:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:26:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:26:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:26:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:26:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:26:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:26:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:26:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:26:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:26:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:26:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:26:06,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:26:06,661 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 23:26:06,743 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:26:06,744 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:26:07,035 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:26:07,242 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:26:07,243 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:26:07,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:26:07 BoogieIcfgContainer [2023-08-31 23:26:07,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:26:07,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:26:07,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:26:07,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:26:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:26:06" (1/3) ... [2023-08-31 23:26:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550b8c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:26:07, skipping insertion in model container [2023-08-31 23:26:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:26:06" (2/3) ... [2023-08-31 23:26:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550b8c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:26:07, skipping insertion in model container [2023-08-31 23:26:07,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:26:07" (3/3) ... [2023-08-31 23:26:07,249 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_tso.i [2023-08-31 23:26:07,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:26:07,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-31 23:26:07,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:26:07,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:26:07,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 100 transitions, 210 flow [2023-08-31 23:26:07,379 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2023-08-31 23:26:07,380 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:26:07,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 98 events. 2/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-31 23:26:07,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 100 transitions, 210 flow [2023-08-31 23:26:07,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 202 flow [2023-08-31 23:26:07,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:26:07,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 202 flow [2023-08-31 23:26:07,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 202 flow [2023-08-31 23:26:07,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 202 flow [2023-08-31 23:26:07,445 INFO L130 PetriNetUnfolder]: 2/98 cut-off events. [2023-08-31 23:26:07,445 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:26:07,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 98 events. 2/98 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-08-31 23:26:07,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 1384 [2023-08-31 23:26:11,225 INFO L134 LiptonReduction]: Checked pairs total: 4430 [2023-08-31 23:26:11,226 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-31 23:26:11,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:26:11,252 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;@7ccb2c1c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:26:11,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-31 23:26:11,254 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 23:26:11,254 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:26:11,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:11,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:26:11,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:11,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash 528, now seen corresponding path program 1 times [2023-08-31 23:26:11,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:11,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675088768] [2023-08-31 23:26:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:11,346 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 23:26:11,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:11,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675088768] [2023-08-31 23:26:11,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675088768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:11,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:11,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:26:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831749589] [2023-08-31 23:26:11,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:11,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:26:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:11,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:26:11,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:26:11,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 199 [2023-08-31 23:26:11,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:11,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:11,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 199 [2023-08-31 23:26:11,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:11,542 INFO L130 PetriNetUnfolder]: 371/624 cut-off events. [2023-08-31 23:26:11,543 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 23:26:11,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1262 conditions, 624 events. 371/624 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2531 event pairs, 371 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 1252. Up to 623 conditions per place. [2023-08-31 23:26:11,549 INFO L137 encePairwiseOnDemand]: 195/199 looper letters, 20 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-31 23:26:11,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 21 transitions, 88 flow [2023-08-31 23:26:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:26:11,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:26:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2023-08-31 23:26:11,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49246231155778897 [2023-08-31 23:26:11,560 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2023-08-31 23:26:11,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2023-08-31 23:26:11,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:11,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2023-08-31 23:26:11,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 23:26:11,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 23:26:11,572 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states 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 23:26:11,573 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 2 states and 196 transitions. [2023-08-31 23:26:11,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 21 transitions, 88 flow [2023-08-31 23:26:11,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:11,576 INFO L231 Difference]: Finished difference. Result has 27 places, 21 transitions, 46 flow [2023-08-31 23:26:11,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=27, PETRI_TRANSITIONS=21} [2023-08-31 23:26:11,579 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-31 23:26:11,580 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 21 transitions, 46 flow [2023-08-31 23:26:11,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 86.5) internal successors, (173), 2 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:11,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:11,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:26:11,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:26:11,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:11,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1736920668, now seen corresponding path program 1 times [2023-08-31 23:26:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:11,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646217548] [2023-08-31 23:26:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:11,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:11,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:11,777 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 23:26:11,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:11,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646217548] [2023-08-31 23:26:11,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646217548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:11,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:11,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:26:11,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130189463] [2023-08-31 23:26:11,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:11,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:26:11,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:26:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:26:11,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 199 [2023-08-31 23:26:11,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 23:26:11,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:11,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 199 [2023-08-31 23:26:11,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:11,896 INFO L130 PetriNetUnfolder]: 322/545 cut-off events. [2023-08-31 23:26:11,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:26:11,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 545 events. 322/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2227 event pairs, 77 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 1100. Up to 396 conditions per place. [2023-08-31 23:26:11,898 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 24 selfloop transitions, 2 changer transitions 2/29 dead transitions. [2023-08-31 23:26:11,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 118 flow [2023-08-31 23:26:11,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:26:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:26:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-08-31 23:26:11,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47571189279731996 [2023-08-31 23:26:11,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-08-31 23:26:11,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-08-31 23:26:11,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:11,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-08-31 23:26:11,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states 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 23:26:11,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 23:26:11,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 23:26:11,902 INFO L175 Difference]: Start difference. First operand has 27 places, 21 transitions, 46 flow. Second operand 3 states and 284 transitions. [2023-08-31 23:26:11,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 118 flow [2023-08-31 23:26:11,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:26:11,903 INFO L231 Difference]: Finished difference. Result has 28 places, 19 transitions, 46 flow [2023-08-31 23:26:11,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=19} [2023-08-31 23:26:11,904 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2023-08-31 23:26:11,904 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 19 transitions, 46 flow [2023-08-31 23:26:11,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 23:26:11,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:11,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:11,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:26:11,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:11,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1990071156, now seen corresponding path program 1 times [2023-08-31 23:26:11,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:11,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715179869] [2023-08-31 23:26:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:12,118 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 23:26:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:12,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715179869] [2023-08-31 23:26:12,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715179869] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:12,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:12,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:26:12,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797797603] [2023-08-31 23:26:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:12,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:12,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:12,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 199 [2023-08-31 23:26:12,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 19 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:12,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:12,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 199 [2023-08-31 23:26:12,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:12,247 INFO L130 PetriNetUnfolder]: 206/358 cut-off events. [2023-08-31 23:26:12,247 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-31 23:26:12,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 358 events. 206/358 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1288 event pairs, 90 based on Foata normal form. 0/358 useless extension candidates. Maximal degree in co-relation 748. Up to 351 conditions per place. [2023-08-31 23:26:12,249 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 19 selfloop transitions, 2 changer transitions 0/22 dead transitions. [2023-08-31 23:26:12,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 94 flow [2023-08-31 23:26:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:26:12,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:26:12,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 326 transitions. [2023-08-31 23:26:12,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40954773869346733 [2023-08-31 23:26:12,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 326 transitions. [2023-08-31 23:26:12,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 326 transitions. [2023-08-31 23:26:12,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:12,252 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 326 transitions. [2023-08-31 23:26:12,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:12,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 23:26:12,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states 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 23:26:12,256 INFO L175 Difference]: Start difference. First operand has 28 places, 19 transitions, 46 flow. Second operand 4 states and 326 transitions. [2023-08-31 23:26:12,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 94 flow [2023-08-31 23:26:12,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:12,257 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 44 flow [2023-08-31 23:26:12,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-08-31 23:26:12,258 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-08-31 23:26:12,260 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 44 flow [2023-08-31 23:26:12,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:12,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:12,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:12,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:26:12,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:12,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:12,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1990071141, now seen corresponding path program 1 times [2023-08-31 23:26:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:12,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207053312] [2023-08-31 23:26:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:12,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:12,844 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 23:26:12,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:12,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207053312] [2023-08-31 23:26:12,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207053312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:12,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:12,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:26:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194584610] [2023-08-31 23:26:12,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:12,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:12,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:12,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2023-08-31 23:26:12,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:12,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:12,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2023-08-31 23:26:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:12,955 INFO L130 PetriNetUnfolder]: 209/366 cut-off events. [2023-08-31 23:26:12,957 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 23:26:12,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 366 events. 209/366 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1210 event pairs, 113 based on Foata normal form. 24/390 useless extension candidates. Maximal degree in co-relation 753. Up to 186 conditions per place. [2023-08-31 23:26:12,959 INFO L137 encePairwiseOnDemand]: 196/199 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-31 23:26:12,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 108 flow [2023-08-31 23:26:12,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:26:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:26:12,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-31 23:26:12,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4304857621440536 [2023-08-31 23:26:12,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-31 23:26:12,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-31 23:26:12,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:12,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-31 23:26:12,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 23:26:12,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 23:26:12,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 23:26:12,966 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 44 flow. Second operand 3 states and 257 transitions. [2023-08-31 23:26:12,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 108 flow [2023-08-31 23:26:12,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:12,967 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 49 flow [2023-08-31 23:26:12,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-08-31 23:26:12,968 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -4 predicate places. [2023-08-31 23:26:12,968 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 49 flow [2023-08-31 23:26:12,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:12,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:12,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:12,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:26:12,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:12,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:12,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1234244016, now seen corresponding path program 1 times [2023-08-31 23:26:12,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:12,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443089307] [2023-08-31 23:26:12,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:12,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:13,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:13,548 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 23:26:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443089307] [2023-08-31 23:26:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443089307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:26:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709123288] [2023-08-31 23:26:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:13,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 23:26:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:13,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 23:26:13,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-31 23:26:13,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 199 [2023-08-31 23:26:13,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 49 flow. Second operand has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 23:26:13,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:13,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 199 [2023-08-31 23:26:13,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:13,654 INFO L130 PetriNetUnfolder]: 174/316 cut-off events. [2023-08-31 23:26:13,655 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-31 23:26:13,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 316 events. 174/316 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1112 event pairs, 94 based on Foata normal form. 3/319 useless extension candidates. Maximal degree in co-relation 691. Up to 279 conditions per place. [2023-08-31 23:26:13,656 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 27 selfloop transitions, 8 changer transitions 0/36 dead transitions. [2023-08-31 23:26:13,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 161 flow [2023-08-31 23:26:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:26:13,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:26:13,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2023-08-31 23:26:13,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44321608040201005 [2023-08-31 23:26:13,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2023-08-31 23:26:13,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2023-08-31 23:26:13,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:13,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2023-08-31 23:26:13,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 23:26:13,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 23:26:13,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 23:26:13,662 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 49 flow. Second operand 5 states and 441 transitions. [2023-08-31 23:26:13,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 161 flow [2023-08-31 23:26:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:13,665 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 98 flow [2023-08-31 23:26:13,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-31 23:26:13,666 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-08-31 23:26:13,666 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 98 flow [2023-08-31 23:26:13,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 82.57142857142857) internal successors, (578), 7 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 23:26:13,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:13,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:13,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:26:13,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:13,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:13,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1152020856, now seen corresponding path program 2 times [2023-08-31 23:26:13,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:13,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269445597] [2023-08-31 23:26:13,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:13,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:14,275 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 23:26:14,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:14,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269445597] [2023-08-31 23:26:14,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269445597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:14,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:14,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:26:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180373511] [2023-08-31 23:26:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:14,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 23:26:14,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 23:26:14,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-31 23:26:14,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-31 23:26:14,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 98 flow. Second operand has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 23:26:14,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:14,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-31 23:26:14,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:14,409 INFO L130 PetriNetUnfolder]: 172/313 cut-off events. [2023-08-31 23:26:14,410 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-08-31 23:26:14,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 313 events. 172/313 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1127 event pairs, 92 based on Foata normal form. 1/314 useless extension candidates. Maximal degree in co-relation 838. Up to 280 conditions per place. [2023-08-31 23:26:14,411 INFO L137 encePairwiseOnDemand]: 192/199 looper letters, 28 selfloop transitions, 16 changer transitions 0/45 dead transitions. [2023-08-31 23:26:14,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 259 flow [2023-08-31 23:26:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:26:14,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:26:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 511 transitions. [2023-08-31 23:26:14,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42797319932998323 [2023-08-31 23:26:14,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 511 transitions. [2023-08-31 23:26:14,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 511 transitions. [2023-08-31 23:26:14,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:14,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 511 transitions. [2023-08-31 23:26:14,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states 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 23:26:14,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:14,416 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:14,416 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 98 flow. Second operand 6 states and 511 transitions. [2023-08-31 23:26:14,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 259 flow [2023-08-31 23:26:14,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:26:14,418 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 209 flow [2023-08-31 23:26:14,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=209, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-31 23:26:14,418 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-08-31 23:26:14,418 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 209 flow [2023-08-31 23:26:14,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 23:26:14,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:14,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:14,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:26:14,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:14,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:14,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1570567562, now seen corresponding path program 1 times [2023-08-31 23:26:14,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:14,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965282775] [2023-08-31 23:26:14,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:14,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:26:14,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:14,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965282775] [2023-08-31 23:26:14,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965282775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:14,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:14,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:26:14,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206762919] [2023-08-31 23:26:14,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:14,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:26:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:26:14,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:26:14,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-31 23:26:14,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:14,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:14,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-31 23:26:14,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:14,675 INFO L130 PetriNetUnfolder]: 104/216 cut-off events. [2023-08-31 23:26:14,676 INFO L131 PetriNetUnfolder]: For 220/220 co-relation queries the response was YES. [2023-08-31 23:26:14,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 216 events. 104/216 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 795 event pairs, 20 based on Foata normal form. 35/250 useless extension candidates. Maximal degree in co-relation 651. Up to 78 conditions per place. [2023-08-31 23:26:14,677 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 34 selfloop transitions, 3 changer transitions 29/67 dead transitions. [2023-08-31 23:26:14,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 67 transitions, 459 flow [2023-08-31 23:26:14,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:26:14,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:26:14,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2023-08-31 23:26:14,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492462311557789 [2023-08-31 23:26:14,678 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 447 transitions. [2023-08-31 23:26:14,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 447 transitions. [2023-08-31 23:26:14,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:14,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 447 transitions. [2023-08-31 23:26:14,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 0 states have call successors, (0), 0 states 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 23:26:14,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 23:26:14,681 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 199.0) internal successors, (1194), 6 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states 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 23:26:14,681 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 209 flow. Second operand 5 states and 447 transitions. [2023-08-31 23:26:14,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 67 transitions, 459 flow [2023-08-31 23:26:14,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 408 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-31 23:26:14,684 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 145 flow [2023-08-31 23:26:14,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-31 23:26:14,684 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-08-31 23:26:14,685 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 145 flow [2023-08-31 23:26:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:14,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:14,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:14,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:26:14,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:14,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1829374324, now seen corresponding path program 1 times [2023-08-31 23:26:14,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:14,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471070897] [2023-08-31 23:26:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:14,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:15,975 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 23:26:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471070897] [2023-08-31 23:26:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471070897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:15,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:15,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:26:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092892460] [2023-08-31 23:26:15,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:15,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:26:15,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:26:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:26:16,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 199 [2023-08-31 23:26:16,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 145 flow. Second operand has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 23:26:16,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:16,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 199 [2023-08-31 23:26:16,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:16,512 INFO L130 PetriNetUnfolder]: 68/161 cut-off events. [2023-08-31 23:26:16,512 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2023-08-31 23:26:16,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551 conditions, 161 events. 68/161 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 536 event pairs, 2 based on Foata normal form. 1/162 useless extension candidates. Maximal degree in co-relation 537. Up to 100 conditions per place. [2023-08-31 23:26:16,513 INFO L137 encePairwiseOnDemand]: 191/199 looper letters, 38 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2023-08-31 23:26:16,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 56 transitions, 369 flow [2023-08-31 23:26:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 23:26:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 23:26:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 742 transitions. [2023-08-31 23:26:16,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41429369067560023 [2023-08-31 23:26:16,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 742 transitions. [2023-08-31 23:26:16,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 742 transitions. [2023-08-31 23:26:16,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:16,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 742 transitions. [2023-08-31 23:26:16,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 82.44444444444444) internal successors, (742), 9 states have internal predecessors, (742), 0 states have call successors, (0), 0 states 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 23:26:16,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 23:26:16,519 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 23:26:16,519 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 145 flow. Second operand 9 states and 742 transitions. [2023-08-31 23:26:16,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 56 transitions, 369 flow [2023-08-31 23:26:16,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 355 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-31 23:26:16,521 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 232 flow [2023-08-31 23:26:16,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=232, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2023-08-31 23:26:16,521 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 19 predicate places. [2023-08-31 23:26:16,521 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 232 flow [2023-08-31 23:26:16,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 23:26:16,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:16,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:16,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:26:16,522 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:16,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:16,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1946891106, now seen corresponding path program 2 times [2023-08-31 23:26:16,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:16,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130744481] [2023-08-31 23:26:16,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:16,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:17,503 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 23:26:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130744481] [2023-08-31 23:26:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130744481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:17,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:17,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:26:17,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624074464] [2023-08-31 23:26:17,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:17,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:26:17,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:26:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:26:17,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-31 23:26:17,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 232 flow. Second operand has 9 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 23:26:17,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:17,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-31 23:26:17,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:18,052 INFO L130 PetriNetUnfolder]: 92/230 cut-off events. [2023-08-31 23:26:18,052 INFO L131 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2023-08-31 23:26:18,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 230 events. 92/230 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 944 event pairs, 0 based on Foata normal form. 5/235 useless extension candidates. Maximal degree in co-relation 866. Up to 83 conditions per place. [2023-08-31 23:26:18,053 INFO L137 encePairwiseOnDemand]: 189/199 looper letters, 44 selfloop transitions, 26 changer transitions 8/79 dead transitions. [2023-08-31 23:26:18,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 604 flow [2023-08-31 23:26:18,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 23:26:18,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 23:26:18,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 933 transitions. [2023-08-31 23:26:18,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4262220191868433 [2023-08-31 23:26:18,055 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 933 transitions. [2023-08-31 23:26:18,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 933 transitions. [2023-08-31 23:26:18,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:18,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 933 transitions. [2023-08-31 23:26:18,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.81818181818181) internal successors, (933), 11 states have internal predecessors, (933), 0 states have call successors, (0), 0 states 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 23:26:18,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states 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 23:26:18,059 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states 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 23:26:18,060 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 232 flow. Second operand 11 states and 933 transitions. [2023-08-31 23:26:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 604 flow [2023-08-31 23:26:18,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 593 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-31 23:26:18,064 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 373 flow [2023-08-31 23:26:18,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=373, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-08-31 23:26:18,065 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2023-08-31 23:26:18,065 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 373 flow [2023-08-31 23:26:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.55555555555556) internal successors, (725), 9 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 23:26:18,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:18,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:26:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:26:18,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:18,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash -477436572, now seen corresponding path program 3 times [2023-08-31 23:26:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:18,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98452537] [2023-08-31 23:26:18,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:18,244 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 23:26:18,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:18,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98452537] [2023-08-31 23:26:18,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98452537] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:18,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:18,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:26:18,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817324962] [2023-08-31 23:26:18,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:26:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:26:18,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:26:18,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 199 [2023-08-31 23:26:18,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 23:26:18,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:18,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 199 [2023-08-31 23:26:18,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:18,328 INFO L130 PetriNetUnfolder]: 56/148 cut-off events. [2023-08-31 23:26:18,328 INFO L131 PetriNetUnfolder]: For 368/368 co-relation queries the response was YES. [2023-08-31 23:26:18,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 148 events. 56/148 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 536 event pairs, 12 based on Foata normal form. 16/163 useless extension candidates. Maximal degree in co-relation 611. Up to 76 conditions per place. [2023-08-31 23:26:18,329 INFO L137 encePairwiseOnDemand]: 194/199 looper letters, 52 selfloop transitions, 5 changer transitions 16/74 dead transitions. [2023-08-31 23:26:18,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 662 flow [2023-08-31 23:26:18,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:26:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:26:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 516 transitions. [2023-08-31 23:26:18,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321608040201005 [2023-08-31 23:26:18,331 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 516 transitions. [2023-08-31 23:26:18,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 516 transitions. [2023-08-31 23:26:18,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:18,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 516 transitions. [2023-08-31 23:26:18,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.0) internal successors, (516), 6 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 23:26:18,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:18,334 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:18,334 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 373 flow. Second operand 6 states and 516 transitions. [2023-08-31 23:26:18,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 662 flow [2023-08-31 23:26:18,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 74 transitions, 561 flow, removed 32 selfloop flow, removed 9 redundant places. [2023-08-31 23:26:18,338 INFO L231 Difference]: Finished difference. Result has 61 places, 44 transitions, 271 flow [2023-08-31 23:26:18,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=61, PETRI_TRANSITIONS=44} [2023-08-31 23:26:18,339 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 29 predicate places. [2023-08-31 23:26:18,339 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 44 transitions, 271 flow [2023-08-31 23:26:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states 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 23:26:18,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:18,340 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 23:26:18,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:26:18,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:18,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1021674928, now seen corresponding path program 1 times [2023-08-31 23:26:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:18,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251304746] [2023-08-31 23:26:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:18,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:19,267 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 23:26:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:19,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251304746] [2023-08-31 23:26:19,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251304746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:19,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:19,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 23:26:19,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243342478] [2023-08-31 23:26:19,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:19,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 23:26:19,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 23:26:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-31 23:26:19,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 199 [2023-08-31 23:26:19,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 44 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 79.54545454545455) internal successors, (875), 11 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 23:26:19,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:19,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 199 [2023-08-31 23:26:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:19,466 INFO L130 PetriNetUnfolder]: 49/137 cut-off events. [2023-08-31 23:26:19,466 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-08-31 23:26:19,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 137 events. 49/137 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 481 event pairs, 1 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 539. Up to 54 conditions per place. [2023-08-31 23:26:19,467 INFO L137 encePairwiseOnDemand]: 190/199 looper letters, 27 selfloop transitions, 24 changer transitions 15/67 dead transitions. [2023-08-31 23:26:19,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 553 flow [2023-08-31 23:26:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 23:26:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 23:26:19,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 749 transitions. [2023-08-31 23:26:19,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41820212171970966 [2023-08-31 23:26:19,470 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 749 transitions. [2023-08-31 23:26:19,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 749 transitions. [2023-08-31 23:26:19,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:19,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 749 transitions. [2023-08-31 23:26:19,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.22222222222223) internal successors, (749), 9 states have internal predecessors, (749), 0 states have call successors, (0), 0 states 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 23:26:19,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 23:26:19,474 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 199.0) internal successors, (1990), 10 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states 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 23:26:19,474 INFO L175 Difference]: Start difference. First operand has 61 places, 44 transitions, 271 flow. Second operand 9 states and 749 transitions. [2023-08-31 23:26:19,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 553 flow [2023-08-31 23:26:19,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 504 flow, removed 16 selfloop flow, removed 6 redundant places. [2023-08-31 23:26:19,477 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 351 flow [2023-08-31 23:26:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=351, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-08-31 23:26:19,478 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-08-31 23:26:19,478 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 351 flow [2023-08-31 23:26:19,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 79.54545454545455) internal successors, (875), 11 states have internal predecessors, (875), 0 states have call successors, (0), 0 states 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 23:26:19,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:19,478 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 23:26:19,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:26:19,479 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:19,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:19,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1177518912, now seen corresponding path program 2 times [2023-08-31 23:26:19,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:19,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384952299] [2023-08-31 23:26:19,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:19,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:19,911 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 23:26:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:19,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384952299] [2023-08-31 23:26:19,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384952299] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:19,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:19,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:26:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769776427] [2023-08-31 23:26:19,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:19,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:26:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:26:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:26:19,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 199 [2023-08-31 23:26:19,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 351 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 23:26:19,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:19,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 199 [2023-08-31 23:26:19,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:20,064 INFO L130 PetriNetUnfolder]: 49/134 cut-off events. [2023-08-31 23:26:20,064 INFO L131 PetriNetUnfolder]: For 250/250 co-relation queries the response was YES. [2023-08-31 23:26:20,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 134 events. 49/134 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 440 event pairs, 3 based on Foata normal form. 1/135 useless extension candidates. Maximal degree in co-relation 575. Up to 65 conditions per place. [2023-08-31 23:26:20,065 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 23 selfloop transitions, 3 changer transitions 45/71 dead transitions. [2023-08-31 23:26:20,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 71 transitions, 629 flow [2023-08-31 23:26:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:26:20,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:26:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 487 transitions. [2023-08-31 23:26:20,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40787269681742044 [2023-08-31 23:26:20,070 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 487 transitions. [2023-08-31 23:26:20,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 487 transitions. [2023-08-31 23:26:20,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:20,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 487 transitions. [2023-08-31 23:26:20,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.16666666666667) internal successors, (487), 6 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 23:26:20,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:20,072 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 199.0) internal successors, (1393), 7 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:26:20,072 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 351 flow. Second operand 6 states and 487 transitions. [2023-08-31 23:26:20,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 71 transitions, 629 flow [2023-08-31 23:26:20,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 548 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-08-31 23:26:20,075 INFO L231 Difference]: Finished difference. Result has 60 places, 24 transitions, 135 flow [2023-08-31 23:26:20,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=135, PETRI_PLACES=60, PETRI_TRANSITIONS=24} [2023-08-31 23:26:20,076 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2023-08-31 23:26:20,076 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 24 transitions, 135 flow [2023-08-31 23:26:20,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 23:26:20,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:26:20,078 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 23:26:20,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:26:20,078 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-08-31 23:26:20,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:26:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1796189684, now seen corresponding path program 3 times [2023-08-31 23:26:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:26:20,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132651019] [2023-08-31 23:26:20,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:26:20,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:26:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:26:22,445 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 23:26:22,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:26:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132651019] [2023-08-31 23:26:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132651019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:26:22,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:26:22,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-31 23:26:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606151564] [2023-08-31 23:26:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:26:22,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 23:26:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:26:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 23:26:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-31 23:26:22,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 199 [2023-08-31 23:26:22,539 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 24 transitions, 135 flow. Second operand has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 23:26:22,539 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:26:22,539 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 199 [2023-08-31 23:26:22,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:26:22,628 INFO L130 PetriNetUnfolder]: 11/45 cut-off events. [2023-08-31 23:26:22,628 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-08-31 23:26:22,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 45 events. 11/45 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 65 event pairs, 1 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 170. Up to 14 conditions per place. [2023-08-31 23:26:22,628 INFO L137 encePairwiseOnDemand]: 193/199 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-08-31 23:26:22,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 27 transitions, 199 flow [2023-08-31 23:26:22,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:26:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:26:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 547 transitions. [2023-08-31 23:26:22,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39267767408470927 [2023-08-31 23:26:22,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 547 transitions. [2023-08-31 23:26:22,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 547 transitions. [2023-08-31 23:26:22,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:26:22,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 547 transitions. [2023-08-31 23:26:22,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.14285714285714) internal successors, (547), 7 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 23:26:22,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 23:26:22,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 199.0) internal successors, (1592), 8 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states 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 23:26:22,633 INFO L175 Difference]: Start difference. First operand has 60 places, 24 transitions, 135 flow. Second operand 7 states and 547 transitions. [2023-08-31 23:26:22,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 27 transitions, 199 flow [2023-08-31 23:26:22,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 27 transitions, 176 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-31 23:26:22,634 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2023-08-31 23:26:22,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=199, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=7, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2023-08-31 23:26:22,635 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-08-31 23:26:22,635 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2023-08-31 23:26:22,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 76.54545454545455) internal successors, (842), 11 states have internal predecessors, (842), 0 states have call successors, (0), 0 states 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 23:26:22,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (9 of 10 remaining) [2023-08-31 23:26:22,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-08-31 23:26:22,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (4 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (3 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-08-31 23:26:22,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 10 remaining) [2023-08-31 23:26:22,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 23:26:22,643 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1] [2023-08-31 23:26:22,646 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:26:22,646 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:26:22,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:26:22 BasicIcfg [2023-08-31 23:26:22,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:26:22,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:26:22,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:26:22,649 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:26:22,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:26:07" (3/4) ... [2023-08-31 23:26:22,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:26:22,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:26:22,654 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:26:22,659 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 33 nodes and edges [2023-08-31 23:26:22,659 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-08-31 23:26:22,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:26:22,660 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:26:22,687 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:26:22,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:26:22,688 INFO L158 Benchmark]: Toolchain (without parser) took 16587.43ms. Allocated memory was 69.2MB in the beginning and 373.3MB in the end (delta: 304.1MB). Free memory was 45.2MB in the beginning and 138.5MB in the end (delta: -93.3MB). Peak memory consumption was 213.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,688 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:26:22,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 404.94ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 45.0MB in the beginning and 51.5MB in the end (delta: -6.5MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.19ms. Allocated memory is still 83.9MB. Free memory was 51.5MB in the beginning and 48.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,689 INFO L158 Benchmark]: Boogie Preprocessor took 39.37ms. Allocated memory is still 83.9MB. Free memory was 48.2MB in the beginning and 46.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,689 INFO L158 Benchmark]: RCFGBuilder took 637.85ms. Allocated memory is still 83.9MB. Free memory was 46.1MB in the beginning and 49.4MB in the end (delta: -3.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,689 INFO L158 Benchmark]: TraceAbstraction took 15402.75ms. Allocated memory was 83.9MB in the beginning and 373.3MB in the end (delta: 289.4MB). Free memory was 48.8MB in the beginning and 141.7MB in the end (delta: -92.8MB). Peak memory consumption was 197.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,690 INFO L158 Benchmark]: Witness Printer took 39.23ms. Allocated memory is still 373.3MB. Free memory was 141.7MB in the beginning and 138.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:26:22,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 404.94ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 45.0MB in the beginning and 51.5MB in the end (delta: -6.5MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.19ms. Allocated memory is still 83.9MB. Free memory was 51.5MB in the beginning and 48.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.37ms. Allocated memory is still 83.9MB. Free memory was 48.2MB in the beginning and 46.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 637.85ms. Allocated memory is still 83.9MB. Free memory was 46.1MB in the beginning and 49.4MB in the end (delta: -3.3MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15402.75ms. Allocated memory was 83.9MB in the beginning and 373.3MB in the end (delta: 289.4MB). Free memory was 48.8MB in the beginning and 141.7MB in the end (delta: -92.8MB). Peak memory consumption was 197.1MB. Max. memory is 16.1GB. * Witness Printer took 39.23ms. Allocated memory is still 373.3MB. Free memory was 141.7MB in the beginning and 138.5MB 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: 3.8s, 103 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1384 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 4430 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1849, independent: 1668, independent conditional: 0, independent unconditional: 1668, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 745, independent: 712, independent conditional: 0, independent unconditional: 712, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1849, independent: 956, independent conditional: 0, independent unconditional: 956, dependent: 148, dependent conditional: 0, dependent unconditional: 148, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 833]: 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 5 procedures, 121 locations, 10 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: 15.3s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 507 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 356 mSDsluCounter, 417 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1807 IncrementalHoareTripleChecker+Invalid, 2039 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 98 mSDtfsCounter, 1807 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=9, InterpolantAutomatonStates: 76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 2608 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:26:22,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE