./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 --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 [2023-09-01 09:15:30,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 09:15:30,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 09:15:30,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 09:15:30,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 09:15:30,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 09:15:30,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 09:15:30,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 09:15:30,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 09:15:30,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 09:15:30,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 09:15:30,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 09:15:30,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 09:15:30,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 09:15:30,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 09:15:30,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 09:15:30,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 09:15:30,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 09:15:30,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 09:15:30,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 09:15:30,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 09:15:30,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 09:15:30,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 09:15:30,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 09:15:30,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 09:15:30,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 09:15:30,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 09:15:30,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 09:15:30,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 09:15:30,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 09:15:30,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 09:15:30,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 09:15:30,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 09:15:30,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 09:15:30,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 09:15:30,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 09:15:30,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 09:15:30,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 09:15:30,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 09:15:30,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 09:15:30,402 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 09:15:30,403 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 09:15:30,433 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 09:15:30,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 09:15:30,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 09:15:30,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 09:15:30,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 09:15:30,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 09:15:30,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 09:15:30,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 09:15:30,436 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 09:15:30,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 09:15:30,437 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 09:15:30,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 09:15:30,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 09:15:30,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 09:15:30,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 09:15:30,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 09:15:30,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 09:15:30,439 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 09:15:30,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 09:15:30,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 09:15:30,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 09:15:30,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 09:15:30,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 09:15:30,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 09:15:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:15:30,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 09:15:30,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 09:15:30,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 09:15:30,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 09:15:30,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 09:15:30,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 09:15:30,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 09:15:30,448 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 09:15:30,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 09:15:30,449 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 09:15:30,449 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 09:15:30,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 09:15:30,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 09:15:30,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 09:15:30,755 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 09:15:30,756 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 09:15:30,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-09-01 09:15:32,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 09:15:32,252 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 09:15:32,253 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-09-01 09:15:32,263 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34905b6b4/bb79f736c96149fba818c93382bd1da5/FLAGaaa47cd0f [2023-09-01 09:15:32,274 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34905b6b4/bb79f736c96149fba818c93382bd1da5 [2023-09-01 09:15:32,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 09:15:32,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 09:15:32,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 09:15:32,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 09:15:32,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 09:15:32,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@234bc55f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32, skipping insertion in model container [2023-09-01 09:15:32,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 09:15:32,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 09:15:32,453 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 09:15:32,595 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2023-09-01 09:15:32,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:15:32,615 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 09:15:32,641 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 09:15:32,666 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i[31161,31174] [2023-09-01 09:15:32,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 09:15:32,706 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:15:32,706 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:15:32,706 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 09:15:32,722 INFO L208 MainTranslator]: Completed translation [2023-09-01 09:15:32,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32 WrapperNode [2023-09-01 09:15:32,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 09:15:32,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 09:15:32,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 09:15:32,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 09:15:32,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,774 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78 [2023-09-01 09:15:32,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 09:15:32,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 09:15:32,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 09:15:32,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 09:15:32,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 09:15:32,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 09:15:32,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 09:15:32,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 09:15:32,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (1/1) ... [2023-09-01 09:15:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 09:15:32,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 09:15:32,841 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) [2023-09-01 09:15:32,848 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 [2023-09-01 09:15:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-09-01 09:15:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-09-01 09:15:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 09:15:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 09:15:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 09:15:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 09:15:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 09:15:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 09:15:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 09:15:32,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 09:15:32,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 09:15:32,872 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 09:15:32,969 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 09:15:32,971 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 09:15:33,092 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 09:15:33,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 09:15:33,138 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 09:15:33,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:15:33 BoogieIcfgContainer [2023-09-01 09:15:33,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 09:15:33,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 09:15:33,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 09:15:33,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 09:15:33,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 09:15:32" (1/3) ... [2023-09-01 09:15:33,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c379f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:15:33, skipping insertion in model container [2023-09-01 09:15:33,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 09:15:32" (2/3) ... [2023-09-01 09:15:33,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c379f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 09:15:33, skipping insertion in model container [2023-09-01 09:15:33,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:15:33" (3/3) ... [2023-09-01 09:15:33,148 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2023-09-01 09:15:33,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 09:15:33,163 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 09:15:33,164 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 09:15:33,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 09:15:33,216 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 09:15:33,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 51 transitions, 107 flow [2023-09-01 09:15:33,272 INFO L130 PetriNetUnfolder]: 1/50 cut-off events. [2023-09-01 09:15:33,272 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:15:33,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-09-01 09:15:33,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 51 transitions, 107 flow [2023-09-01 09:15:33,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 37 transitions, 77 flow [2023-09-01 09:15:33,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 09:15:33,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 41 places, 37 transitions, 77 flow [2023-09-01 09:15:33,307 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 41 places, 37 transitions, 77 flow [2023-09-01 09:15:33,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 37 transitions, 77 flow [2023-09-01 09:15:33,324 INFO L130 PetriNetUnfolder]: 0/37 cut-off events. [2023-09-01 09:15:33,324 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:15:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 09:15:33,324 INFO L119 LiptonReduction]: Number of co-enabled transitions 156 [2023-09-01 09:15:34,763 INFO L134 LiptonReduction]: Checked pairs total: 306 [2023-09-01 09:15:34,764 INFO L136 LiptonReduction]: Total number of compositions: 29 [2023-09-01 09:15:34,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 09:15:34,781 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4a317fcc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 09:15:34,782 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-09-01 09:15:34,785 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-09-01 09:15:34,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:15:34,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:15:34,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 09:15:34,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:15:34,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:15:34,790 INFO L85 PathProgramCache]: Analyzing trace with hash 216713938, now seen corresponding path program 1 times [2023-09-01 09:15:34,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:15:34,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397023144] [2023-09-01 09:15:34,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:15:34,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:15:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:15:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:15:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:15:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397023144] [2023-09-01 09:15:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397023144] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:15:35,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:15:35,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 09:15:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917673766] [2023-09-01 09:15:35,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:15:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:15:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:15:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:15:35,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:15:35,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 80 [2023-09-01 09:15:35,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 19 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:15:35,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 80 [2023-09-01 09:15:35,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:15:35,182 INFO L130 PetriNetUnfolder]: 6/23 cut-off events. [2023-09-01 09:15:35,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 09:15:35,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 23 events. 6/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 3 based on Foata normal form. 4/27 useless extension candidates. Maximal degree in co-relation 42. Up to 12 conditions per place. [2023-09-01 09:15:35,184 INFO L137 encePairwiseOnDemand]: 76/80 looper letters, 6 selfloop transitions, 2 changer transitions 3/11 dead transitions. [2023-09-01 09:15:35,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 11 transitions, 47 flow [2023-09-01 09:15:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:15:35,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:15:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-09-01 09:15:35,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-09-01 09:15:35,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-09-01 09:15:35,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-09-01 09:15:35,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:15:35,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-09-01 09:15:35,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,216 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,218 INFO L175 Difference]: Start difference. First operand has 12 places, 8 transitions, 19 flow. Second operand 3 states and 138 transitions. [2023-09-01 09:15:35,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 11 transitions, 47 flow [2023-09-01 09:15:35,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 09:15:35,229 INFO L231 Difference]: Finished difference. Result has 15 places, 8 transitions, 30 flow [2023-09-01 09:15:35,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=8} [2023-09-01 09:15:35,234 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 3 predicate places. [2023-09-01 09:15:35,235 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 8 transitions, 30 flow [2023-09-01 09:15:35,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:15:35,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:15:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 09:15:35,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:15:35,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:15:35,241 INFO L85 PathProgramCache]: Analyzing trace with hash 2103681018, now seen corresponding path program 1 times [2023-09-01 09:15:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:15:35,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413065288] [2023-09-01 09:15:35,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:15:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:15:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:15:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:15:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:15:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413065288] [2023-09-01 09:15:35,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413065288] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:15:35,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:15:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:15:35,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533211649] [2023-09-01 09:15:35,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:15:35,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 09:15:35,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:15:35,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 09:15:35,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 09:15:35,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2023-09-01 09:15:35,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 8 transitions, 30 flow. Second operand has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:15:35,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2023-09-01 09:15:35,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:15:35,398 INFO L130 PetriNetUnfolder]: 2/16 cut-off events. [2023-09-01 09:15:35,399 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 09:15:35,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 2/16 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 2/18 useless extension candidates. Maximal degree in co-relation 34. Up to 10 conditions per place. [2023-09-01 09:15:35,400 INFO L137 encePairwiseOnDemand]: 77/80 looper letters, 5 selfloop transitions, 2 changer transitions 1/9 dead transitions. [2023-09-01 09:15:35,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 48 flow [2023-09-01 09:15:35,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 09:15:35,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 09:15:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2023-09-01 09:15:35,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2023-09-01 09:15:35,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 185 transitions. [2023-09-01 09:15:35,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 185 transitions. [2023-09-01 09:15:35,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:15:35,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 185 transitions. [2023-09-01 09:15:35,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,409 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,409 INFO L175 Difference]: Start difference. First operand has 15 places, 8 transitions, 30 flow. Second operand 4 states and 185 transitions. [2023-09-01 09:15:35,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 9 transitions, 48 flow [2023-09-01 09:15:35,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 44 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 09:15:35,412 INFO L231 Difference]: Finished difference. Result has 17 places, 8 transitions, 33 flow [2023-09-01 09:15:35,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=26, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=33, PETRI_PLACES=17, PETRI_TRANSITIONS=8} [2023-09-01 09:15:35,413 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 5 predicate places. [2023-09-01 09:15:35,413 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 8 transitions, 33 flow [2023-09-01 09:15:35,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.5) internal successors, (182), 4 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 09:15:35,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 09:15:35,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 09:15:35,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 09:15:35,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 09:15:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 2084912688, now seen corresponding path program 2 times [2023-09-01 09:15:35,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 09:15:35,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561646678] [2023-09-01 09:15:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 09:15:35,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 09:15:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 09:15:35,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 09:15:35,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 09:15:35,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561646678] [2023-09-01 09:15:35,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561646678] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 09:15:35,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 09:15:35,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 09:15:35,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252964853] [2023-09-01 09:15:35,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 09:15:35,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 09:15:35,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 09:15:35,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 09:15:35,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 09:15:35,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 80 [2023-09-01 09:15:35,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 8 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 09:15:35,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 80 [2023-09-01 09:15:35,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 09:15:35,559 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-09-01 09:15:35,559 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 09:15:35,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 8 events. 0/8 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/9 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-09-01 09:15:35,560 INFO L137 encePairwiseOnDemand]: 77/80 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-09-01 09:15:35,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 7 transitions, 41 flow [2023-09-01 09:15:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 09:15:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 09:15:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-09-01 09:15:35,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5791666666666667 [2023-09-01 09:15:35,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-09-01 09:15:35,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-09-01 09:15:35,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 09:15:35,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-09-01 09:15:35,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,567 INFO L175 Difference]: Start difference. First operand has 17 places, 8 transitions, 33 flow. Second operand 3 states and 139 transitions. [2023-09-01 09:15:35,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 7 transitions, 41 flow [2023-09-01 09:15:35,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 7 transitions, 36 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 09:15:35,568 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-09-01 09:15:35,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-09-01 09:15:35,570 INFO L281 CegarLoopForPetriNet]: 12 programPoint places, 3 predicate places. [2023-09-01 09:15:35,572 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-09-01 09:15:35,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 09:15:35,575 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-09-01 09:15:35,576 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-09-01 09:15:35,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 09:15:35,576 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2023-09-01 09:15:35,586 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 09:15:35,586 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 09:15:35,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 09:15:35 BasicIcfg [2023-09-01 09:15:35,591 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 09:15:35,591 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 09:15:35,591 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 09:15:35,592 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 09:15:35,592 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 09:15:33" (3/4) ... [2023-09-01 09:15:35,595 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 09:15:35,599 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-09-01 09:15:35,604 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-09-01 09:15:35,604 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-09-01 09:15:35,604 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 09:15:35,604 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 09:15:35,641 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 09:15:35,641 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 09:15:35,642 INFO L158 Benchmark]: Toolchain (without parser) took 3364.22ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 51.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2023-09-01 09:15:35,642 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:15:35,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.15ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 62.1MB in the end (delta: -404.2kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. [2023-09-01 09:15:35,644 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.11ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:15:35,644 INFO L158 Benchmark]: Boogie Preprocessor took 24.13ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 58.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:15:35,645 INFO L158 Benchmark]: RCFGBuilder took 340.47ms. Allocated memory is still 83.9MB. Free memory was 58.8MB in the beginning and 44.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 09:15:35,648 INFO L158 Benchmark]: TraceAbstraction took 2449.18ms. Allocated memory is still 83.9MB. Free memory was 43.2MB in the beginning and 53.8MB in the end (delta: -10.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 09:15:35,648 INFO L158 Benchmark]: Witness Printer took 50.19ms. Allocated memory is still 83.9MB. Free memory was 53.8MB in the beginning and 51.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 09:15:35,649 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory is still 42.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.15ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 62.1MB in the end (delta: -404.2kB). Peak memory consumption was 23.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.11ms. Allocated memory is still 83.9MB. Free memory was 62.1MB in the beginning and 60.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.13ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 58.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.47ms. Allocated memory is still 83.9MB. Free memory was 58.8MB in the beginning and 44.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2449.18ms. Allocated memory is still 83.9MB. Free memory was 43.2MB in the beginning and 53.8MB in the end (delta: -10.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.19ms. Allocated memory is still 83.9MB. Free memory was 53.8MB in the beginning and 51.1MB in the end (delta: 2.7MB). 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: 1.5s, 41 PlacesBefore, 12 PlacesAfterwards, 37 TransitionsBefore, 8 TransitionsAfterwards, 156 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 29 TotalNumberOfCompositions, 306 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 187, independent: 135, independent conditional: 0, independent unconditional: 135, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 88, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 187, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 88, unknown conditional: 0, unknown unconditional: 88] , Statistics on independence cache: Total cache size (in pairs): 9, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 738]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 59 locations, 2 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: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 33 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 2 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 09:15:35,670 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