./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.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 overflows 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-Overflow-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 ! overflow) ) --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 04:57:36,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:57:36,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:57:36,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:57:36,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:57:36,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:57:36,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:57:36,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:57:36,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:57:36,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:57:36,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:57:36,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:57:36,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:57:36,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:57:36,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:57:36,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:57:36,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:57:36,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:57:36,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:57:36,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:57:36,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:57:36,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:57:36,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:57:36,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:57:36,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:57:36,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:57:36,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:57:36,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:57:36,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:57:36,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:57:36,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:57:36,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:57:36,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:57:36,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:57:36,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:57:36,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:57:36,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:57:36,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:57:36,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:57:36,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:57:36,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:57:36,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:57:36,429 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:57:36,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:57:36,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:57:36,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:57:36,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:57:36,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:57:36,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:57:36,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:57:36,432 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:57:36,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:57:36,433 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:57:36,433 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:57:36,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:57:36,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:57:36,434 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:57:36,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:57:36,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:57:36,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:57:36,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:57:36,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:57:36,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:57:36,436 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:57:36,437 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:57:36,437 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:57:36,437 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72289b7b84ec29dc48aff6fa2f8d521998f594af518139867a01f104107e1865 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:57:36,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:57:36,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:57:36,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:57:36,742 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:57:36,743 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:57:36,744 INFO L432 ainManager$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 04:57:37,757 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:57:37,966 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:57:37,970 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/18_read_write_lock.i [2023-09-01 04:57:37,995 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb5c8bfd/83ac990001654e94b6fa1c9c2217b6fb/FLAG5351c8ace [2023-09-01 04:57:38,018 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb5c8bfd/83ac990001654e94b6fa1c9c2217b6fb [2023-09-01 04:57:38,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:57:38,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:57:38,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:57:38,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:57:38,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:57:38,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa5cbe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38, skipping insertion in model container [2023-09-01 04:57:38,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:57:38,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:57:38,241 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 04:57:38,357 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 04:57:38,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:57:38,368 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:57:38,393 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-09-01 04:57:38,414 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 04:57:38,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:57:38,445 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:57:38,445 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:57:38,445 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 04:57:38,450 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:57:38,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38 WrapperNode [2023-09-01 04:57:38,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:57:38,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:57:38,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:57:38,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:57:38,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,499 INFO L138 Inliner]: procedures = 174, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 82 [2023-09-01 04:57:38,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:57:38,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:57:38,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:57:38,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:57:38,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,527 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,529 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:57:38,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:57:38,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:57:38,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:57:38,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (1/1) ... [2023-09-01 04:57:38,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:57:38,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:38,559 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 04:57:38,578 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 04:57:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-09-01 04:57:38,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-09-01 04:57:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 04:57:38,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:57:38,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:57:38,588 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 04:57:38,699 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:57:38,701 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:57:38,875 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:57:38,913 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:57:38,913 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 04:57:38,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:57:38 BoogieIcfgContainer [2023-09-01 04:57:38,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:57:38,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:57:38,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:57:38,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:57:38,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:57:38" (1/3) ... [2023-09-01 04:57:38,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4b2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:57:38, skipping insertion in model container [2023-09-01 04:57:38,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:38" (2/3) ... [2023-09-01 04:57:38,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b4b2b49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:57:38, skipping insertion in model container [2023-09-01 04:57:38,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:57:38" (3/3) ... [2023-09-01 04:57:38,930 INFO L112 eAbstractionObserver]: Analyzing ICFG 18_read_write_lock.i [2023-09-01 04:57:38,937 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:57:38,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:57:38,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 04:57:38,944 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:57:38,995 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:57:39,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 113 flow [2023-09-01 04:57:39,066 INFO L130 PetriNetUnfolder]: 1/53 cut-off events. [2023-09-01 04:57:39,066 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:39,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 21 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2023-09-01 04:57:39,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 54 transitions, 113 flow [2023-09-01 04:57:39,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 44 transitions, 91 flow [2023-09-01 04:57:39,080 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:57:39,091 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 47 places, 44 transitions, 91 flow [2023-09-01 04:57:39,094 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 47 places, 44 transitions, 91 flow [2023-09-01 04:57:39,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 44 transitions, 91 flow [2023-09-01 04:57:39,116 INFO L130 PetriNetUnfolder]: 1/44 cut-off events. [2023-09-01 04:57:39,116 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:39,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-09-01 04:57:39,118 INFO L119 LiptonReduction]: Number of co-enabled transitions 240 [2023-09-01 04:57:40,557 INFO L134 LiptonReduction]: Checked pairs total: 495 [2023-09-01 04:57:40,558 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-09-01 04:57:40,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:57:40,582 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;@2c9d9b24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:57:40,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-09-01 04:57:40,587 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-09-01 04:57:40,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:40,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:40,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:57:40,589 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-09-01 04:57:40,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:40,592 INFO L85 PathProgramCache]: Analyzing trace with hash 256872, now seen corresponding path program 1 times [2023-09-01 04:57:40,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:40,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688428] [2023-09-01 04:57:40,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:40,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:40,815 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 04:57:40,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:40,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688428] [2023-09-01 04:57:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688428] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:40,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:40,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:57:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683796940] [2023-09-01 04:57:40,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:57:40,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:40,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:57:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:57:40,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2023-09-01 04:57:40,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 11 transitions, 25 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 04:57:40,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:40,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2023-09-01 04:57:40,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:40,896 INFO L130 PetriNetUnfolder]: 6/35 cut-off events. [2023-09-01 04:57:40,896 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:40,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 35 events. 6/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 113 event pairs, 3 based on Foata normal form. 2/34 useless extension candidates. Maximal degree in co-relation 61. Up to 17 conditions per place. [2023-09-01 04:57:40,898 INFO L137 encePairwiseOnDemand]: 89/96 looper letters, 7 selfloop transitions, 3 changer transitions 1/12 dead transitions. [2023-09-01 04:57:40,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 15 places, 12 transitions, 49 flow [2023-09-01 04:57:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:57:40,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:57:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-09-01 04:57:40,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2023-09-01 04:57:40,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-09-01 04:57:40,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-09-01 04:57:40,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:40,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-09-01 04:57:40,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 04:57:40,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 04:57:40,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 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 04:57:40,928 INFO L175 Difference]: Start difference. First operand has 15 places, 11 transitions, 25 flow. Second operand 3 states and 147 transitions. [2023-09-01 04:57:40,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 15 places, 12 transitions, 49 flow [2023-09-01 04:57:40,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 14 places, 12 transitions, 48 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:57:40,933 INFO L231 Difference]: Finished difference. Result has 16 places, 10 transitions, 40 flow [2023-09-01 04:57:40,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=16, PETRI_TRANSITIONS=10} [2023-09-01 04:57:40,939 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 1 predicate places. [2023-09-01 04:57:40,939 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 10 transitions, 40 flow [2023-09-01 04:57:40,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 04:57:40,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:40,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:57:40,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:57:40,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-09-01 04:57:40,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 246861134, now seen corresponding path program 1 times [2023-09-01 04:57:40,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:40,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922856933] [2023-09-01 04:57:40,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:40,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:41,011 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 04:57:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922856933] [2023-09-01 04:57:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922856933] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:41,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:41,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747557568] [2023-09-01 04:57:41,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:41,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:41,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:41,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:41,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2023-09-01 04:57:41,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 04:57:41,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:41,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2023-09-01 04:57:41,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:41,036 INFO L130 PetriNetUnfolder]: 5/28 cut-off events. [2023-09-01 04:57:41,036 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 04:57:41,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 28 events. 5/28 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 73 event pairs, 2 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 64. Up to 12 conditions per place. [2023-09-01 04:57:41,037 INFO L137 encePairwiseOnDemand]: 92/96 looper letters, 6 selfloop transitions, 3 changer transitions 1/11 dead transitions. [2023-09-01 04:57:41,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 60 flow [2023-09-01 04:57:41,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:57:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:57:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2023-09-01 04:57:41,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2023-09-01 04:57:41,039 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 187 transitions. [2023-09-01 04:57:41,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 187 transitions. [2023-09-01 04:57:41,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:41,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 187 transitions. [2023-09-01 04:57:41,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 0 states have call successors, (0), 0 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 04:57:41,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 04:57:41,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 04:57:41,043 INFO L175 Difference]: Start difference. First operand has 16 places, 10 transitions, 40 flow. Second operand 4 states and 187 transitions. [2023-09-01 04:57:41,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 60 flow [2023-09-01 04:57:41,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 54 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:57:41,044 INFO L231 Difference]: Finished difference. Result has 16 places, 9 transitions, 36 flow [2023-09-01 04:57:41,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=36, PETRI_PLACES=16, PETRI_TRANSITIONS=9} [2023-09-01 04:57:41,050 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 1 predicate places. [2023-09-01 04:57:41,051 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 9 transitions, 36 flow [2023-09-01 04:57:41,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 04:57:41,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:41,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:57:41,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:57:41,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-09-01 04:57:41,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash 246861133, now seen corresponding path program 1 times [2023-09-01 04:57:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:41,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172590980] [2023-09-01 04:57:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:57:41,093 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 04:57:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 04:57:41,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172590980] [2023-09-01 04:57:41,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172590980] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:57:41,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:57:41,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:57:41,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922701036] [2023-09-01 04:57:41,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:57:41,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:57:41,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 04:57:41,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:57:41,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:57:41,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 96 [2023-09-01 04:57:41,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 9 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 04:57:41,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:57:41,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 96 [2023-09-01 04:57:41,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:57:41,110 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-09-01 04:57:41,111 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 04:57:41,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 13 events. 2/13 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 1 based on Foata normal form. 5/18 useless extension candidates. Maximal degree in co-relation 28. Up to 8 conditions per place. [2023-09-01 04:57:41,111 INFO L137 encePairwiseOnDemand]: 92/96 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-09-01 04:57:41,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 8 transitions, 42 flow [2023-09-01 04:57:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:57:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:57:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2023-09-01 04:57:41,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2023-09-01 04:57:41,113 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 185 transitions. [2023-09-01 04:57:41,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 185 transitions. [2023-09-01 04:57:41,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:57:41,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 185 transitions. [2023-09-01 04:57:41,114 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 04:57:41,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 04:57:41,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 0 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 04:57:41,115 INFO L175 Difference]: Start difference. First operand has 16 places, 9 transitions, 36 flow. Second operand 4 states and 185 transitions. [2023-09-01 04:57:41,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 8 transitions, 42 flow [2023-09-01 04:57:41,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 8 transitions, 37 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:57:41,116 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-09-01 04:57:41,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=96, PETRI_DIFFERENCE_MINUEND_FLOW=21, PETRI_DIFFERENCE_MINUEND_PLACES=12, 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=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-09-01 04:57:41,117 INFO L281 CegarLoopForPetriNet]: 15 programPoint places, 0 predicate places. [2023-09-01 04:57:41,117 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-09-01 04:57:41,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 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 04:57:41,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 5 remaining) [2023-09-01 04:57:41,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2023-09-01 04:57:41,120 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2023-09-01 04:57:41,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2023-09-01 04:57:41,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-09-01 04:57:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:57:41,121 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-09-01 04:57:41,124 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 04:57:41,124 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 04:57:41,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 04:57:41 BasicIcfg [2023-09-01 04:57:41,127 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 04:57:41,127 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 04:57:41,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 04:57:41,127 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 04:57:41,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:57:38" (3/4) ... [2023-09-01 04:57:41,130 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 04:57:41,134 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-09-01 04:57:41,137 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-09-01 04:57:41,137 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-09-01 04:57:41,137 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-09-01 04:57:41,138 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 04:57:41,175 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 04:57:41,175 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 04:57:41,176 INFO L158 Benchmark]: Toolchain (without parser) took 3154.12ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 43.5MB in the beginning and 43.5MB in the end (delta: 39.6kB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2023-09-01 04:57:41,178 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 33.2MB in the beginning and 33.2MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:57:41,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.51ms. Allocated memory is still 67.1MB. Free memory was 43.4MB in the beginning and 38.9MB in the end (delta: 4.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-09-01 04:57:41,179 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.67ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:57:41,179 INFO L158 Benchmark]: Boogie Preprocessor took 35.18ms. Allocated memory is still 67.1MB. Free memory was 36.8MB in the beginning and 35.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:57:41,179 INFO L158 Benchmark]: RCFGBuilder took 378.73ms. Allocated memory is still 67.1MB. Free memory was 35.4MB in the beginning and 35.2MB in the end (delta: 239.4kB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2023-09-01 04:57:41,179 INFO L158 Benchmark]: TraceAbstraction took 2210.67ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.4MB in the beginning and 46.4MB in the end (delta: -12.0MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-09-01 04:57:41,180 INFO L158 Benchmark]: Witness Printer took 48.30ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 43.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 04:57:41,181 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory was 33.2MB in the beginning and 33.2MB in the end (delta: 1.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.51ms. Allocated memory is still 67.1MB. Free memory was 43.4MB in the beginning and 38.9MB in the end (delta: 4.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.67ms. Allocated memory is still 67.1MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.18ms. Allocated memory is still 67.1MB. Free memory was 36.8MB in the beginning and 35.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.73ms. Allocated memory is still 67.1MB. Free memory was 35.4MB in the beginning and 35.2MB in the end (delta: 239.4kB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2210.67ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 34.4MB in the beginning and 46.4MB in the end (delta: -12.0MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 48.30ms. Allocated memory is still 81.8MB. Free memory was 46.4MB in the beginning and 43.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 47 PlacesBefore, 15 PlacesAfterwards, 44 TransitionsBefore, 11 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 42 TotalNumberOfCompositions, 495 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 268, independent: 215, independent conditional: 0, independent unconditional: 215, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 132, independent: 116, independent conditional: 0, independent unconditional: 116, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 268, independent: 99, independent conditional: 0, independent unconditional: 99, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 132, unknown conditional: 0, unknown unconditional: 132] , Statistics on independence cache: Total cache size (in pairs): 10, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 722]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 722]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 743]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 62 locations, 5 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: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 3 mSDtfsCounter, 53 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 04:57:41,210 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