./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/singleton_with-uninit-problems.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 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:10:59,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:10:59,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:10:59,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:10:59,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:10:59,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:10:59,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:10:59,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:10:59,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:10:59,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:10:59,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:10:59,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:10:59,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:10:59,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:10:59,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:10:59,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:10:59,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:10:59,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:10:59,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:10:59,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:10:59,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:10:59,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:10:59,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:10:59,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:10:59,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:10:59,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:10:59,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:10:59,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:10:59,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:10:59,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:10:59,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:10:59,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:10:59,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:10:59,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:10:59,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:10:59,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:10:59,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:10:59,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:10:59,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:10:59,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:10:59,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:10:59,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:10:59,601 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:10:59,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:10:59,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:10:59,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:10:59,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:10:59,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:10:59,604 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:10:59,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:10:59,604 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:10:59,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:10:59,605 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:10:59,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:10:59,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:10:59,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:10:59,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:10:59,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:10:59,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:10:59,606 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:10:59,607 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:10:59,607 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:10:59,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:10:59,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:10:59,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:10:59,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:10:59,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:10:59,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:10:59,608 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:10:59,608 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:10:59,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:10:59,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:10:59,609 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:10:59,609 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:10:59,610 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:10:59,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:10:59,610 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:10:59,610 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9556b3eb7217f056a72a299bf0514e64606a248fa454b59dcc03e4a2e74c7c90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:10:59,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:10:59,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:10:59,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:10:59,894 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:10:59,894 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:10:59,896 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2023-08-30 16:11:00,956 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:11:01,200 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:11:01,201 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/singleton_with-uninit-problems.i [2023-08-30 16:11:01,216 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0bfb0f4/3c498d631a844d9b8ba8b0a06261aa59/FLAG7a5f3e58f [2023-08-30 16:11:01,236 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc0bfb0f4/3c498d631a844d9b8ba8b0a06261aa59 [2023-08-30 16:11:01,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:11:01,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:11:01,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:11:01,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:11:01,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:11:01,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:01,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be8c76f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01, skipping insertion in model container [2023-08-30 16:11:01,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:01,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:11:01,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:11:01,511 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:11:01,777 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/singleton_with-uninit-problems.i[55568,55581] [2023-08-30 16:11:01,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:11:01,811 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:11:01,839 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-30 16:11:01,870 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/singleton_with-uninit-problems.i[55568,55581] [2023-08-30 16:11:01,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:11:01,987 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:11:01,988 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:11:01,988 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:11:01,993 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:11:01,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01 WrapperNode [2023-08-30 16:11:01,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:11:01,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:11:01,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:11:01,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:11:02,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,057 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2023-08-30 16:11:02,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:11:02,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:11:02,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:11:02,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:11:02,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,097 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:11:02,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:11:02,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:11:02,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:11:02,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (1/1) ... [2023-08-30 16:11:02,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:11:02,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:11:02,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:11:02,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:11:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:11:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:11:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:11:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:11:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:11:02,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-08-30 16:11:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-08-30 16:11:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 16:11:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 16:11:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 16:11:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 16:11:02,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 16:11:02,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 16:11:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:11:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 16:11:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:11:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:11:02,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:11:02,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:11:02,170 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:11:02,285 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:11:02,286 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:11:02,591 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:11:02,596 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:11:02,597 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:11:02,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:11:02 BoogieIcfgContainer [2023-08-30 16:11:02,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:11:02,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:11:02,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:11:02,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:11:02,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:11:01" (1/3) ... [2023-08-30 16:11:02,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6656f6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:11:02, skipping insertion in model container [2023-08-30 16:11:02,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:11:01" (2/3) ... [2023-08-30 16:11:02,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6656f6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:11:02, skipping insertion in model container [2023-08-30 16:11:02,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:11:02" (3/3) ... [2023-08-30 16:11:02,605 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton_with-uninit-problems.i [2023-08-30 16:11:02,611 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:11:02,618 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:11:02,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:11:02,619 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:11:02,736 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-08-30 16:11:02,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 195 transitions, 497 flow [2023-08-30 16:11:02,823 INFO L130 PetriNetUnfolder]: 7/132 cut-off events. [2023-08-30 16:11:02,823 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 16:11:02,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 132 events. 7/132 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2023-08-30 16:11:02,828 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 195 transitions, 497 flow [2023-08-30 16:11:02,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 121 transitions, 293 flow [2023-08-30 16:11:02,834 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:11:02,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 121 transitions, 293 flow [2023-08-30 16:11:02,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 121 transitions, 293 flow [2023-08-30 16:11:02,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 121 transitions, 293 flow [2023-08-30 16:11:02,871 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-30 16:11:02,872 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 16:11:02,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 121 events. 6/121 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 49 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 113. Up to 3 conditions per place. [2023-08-30 16:11:02,874 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-08-30 16:11:05,611 INFO L134 LiptonReduction]: Checked pairs total: 2823 [2023-08-30 16:11:05,612 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-30 16:11:05,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:11:05,632 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;@4160c1b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:11:05,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 16:11:05,641 INFO L130 PetriNetUnfolder]: 5/40 cut-off events. [2023-08-30 16:11:05,642 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 16:11:05,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:11:05,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:11:05,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-08-30 16:11:05,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:11:05,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2069026674, now seen corresponding path program 1 times [2023-08-30 16:11:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:11:05,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692062029] [2023-08-30 16:11:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:11:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:11:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:11:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:11:06,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:11:06,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692062029] [2023-08-30 16:11:06,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692062029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:11:06,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:11:06,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:11:06,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587176893] [2023-08-30 16:11:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:11:06,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:11:06,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:11:06,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:11:06,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:11:06,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 282 [2023-08-30 16:11:06,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:06,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:11:06,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 282 [2023-08-30 16:11:06,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:11:06,504 INFO L130 PetriNetUnfolder]: 494/866 cut-off events. [2023-08-30 16:11:06,505 INFO L131 PetriNetUnfolder]: For 160/164 co-relation queries the response was YES. [2023-08-30 16:11:06,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1858 conditions, 866 events. 494/866 cut-off events. For 160/164 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3271 event pairs, 142 based on Foata normal form. 5/813 useless extension candidates. Maximal degree in co-relation 1836. Up to 431 conditions per place. [2023-08-30 16:11:06,514 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 39 selfloop transitions, 7 changer transitions 9/63 dead transitions. [2023-08-30 16:11:06,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 323 flow [2023-08-30 16:11:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:11:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:11:06,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 16:11:06,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910165484633569 [2023-08-30 16:11:06,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 16:11:06,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 16:11:06,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:11:06,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 16:11:06,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:06,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:06,550 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:06,553 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 133 flow. Second operand 3 states and 500 transitions. [2023-08-30 16:11:06,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 323 flow [2023-08-30 16:11:06,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 265 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-30 16:11:06,565 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 153 flow [2023-08-30 16:11:06,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-08-30 16:11:06,570 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2023-08-30 16:11:06,571 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 153 flow [2023-08-30 16:11:06,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:06,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:11:06,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:11:06,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:11:06,573 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-08-30 16:11:06,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:11:06,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2036525508, now seen corresponding path program 2 times [2023-08-30 16:11:06,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:11:06,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747342126] [2023-08-30 16:11:06,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:11:06,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:11:06,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:11:06,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:11:06,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:11:06,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747342126] [2023-08-30 16:11:06,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747342126] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:11:06,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:11:06,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:11:06,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405938256] [2023-08-30 16:11:06,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:11:06,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:11:06,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:11:06,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:11:06,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:11:06,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 282 [2023-08-30 16:11:06,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:06,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:11:06,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 282 [2023-08-30 16:11:06,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:11:07,006 INFO L130 PetriNetUnfolder]: 434/789 cut-off events. [2023-08-30 16:11:07,006 INFO L131 PetriNetUnfolder]: For 428/440 co-relation queries the response was YES. [2023-08-30 16:11:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 789 events. 434/789 cut-off events. For 428/440 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3080 event pairs, 156 based on Foata normal form. 11/736 useless extension candidates. Maximal degree in co-relation 906. Up to 541 conditions per place. [2023-08-30 16:11:07,009 INFO L137 encePairwiseOnDemand]: 275/282 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2023-08-30 16:11:07,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 328 flow [2023-08-30 16:11:07,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:11:07,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:11:07,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-30 16:11:07,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862884160756501 [2023-08-30 16:11:07,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-30 16:11:07,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-30 16:11:07,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:11:07,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-30 16:11:07,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:07,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:07,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:07,016 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 153 flow. Second operand 3 states and 496 transitions. [2023-08-30 16:11:07,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 328 flow [2023-08-30 16:11:07,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:11:07,018 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-30 16:11:07,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2023-08-30 16:11:07,019 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2023-08-30 16:11:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-30 16:11:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:11:07,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2023-08-30 16:11:07,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 12 remaining) [2023-08-30 16:11:07,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 12 remaining) [2023-08-30 16:11:07,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 12 remaining) [2023-08-30 16:11:07,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 12 remaining) [2023-08-30 16:11:07,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 12 remaining) [2023-08-30 16:11:07,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 12 remaining) [2023-08-30 16:11:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 12 remaining) [2023-08-30 16:11:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-08-30 16:11:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-08-30 16:11:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 16:11:07,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread0Thread1of1ForFork4Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 16:11:07,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:11:07,026 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-08-30 16:11:07,029 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:11:07,029 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:11:07,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:11:07 BasicIcfg [2023-08-30 16:11:07,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:11:07,032 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:11:07,032 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:11:07,033 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:11:07,033 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:11:02" (3/4) ... [2023-08-30 16:11:07,035 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:11:07,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread0 [2023-08-30 16:11:07,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 16:11:07,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 16:11:07,040 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 16:11:07,043 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-08-30 16:11:07,043 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:11:07,044 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:11:07,044 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:11:07,065 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:11:07,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:11:07,066 INFO L158 Benchmark]: Toolchain (without parser) took 5826.51ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 57.5MB in the beginning and 30.1MB in the end (delta: 27.3MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,067 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 65.0MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:11:07,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 753.01ms. Allocated memory is still 81.8MB. Free memory was 57.2MB in the beginning and 43.5MB in the end (delta: 13.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.38ms. Allocated memory is still 81.8MB. Free memory was 43.5MB in the beginning and 41.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,068 INFO L158 Benchmark]: Boogie Preprocessor took 46.84ms. Allocated memory is still 81.8MB. Free memory was 41.3MB in the beginning and 39.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,068 INFO L158 Benchmark]: RCFGBuilder took 485.71ms. Allocated memory is still 81.8MB. Free memory was 39.4MB in the beginning and 52.8MB in the end (delta: -13.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,069 INFO L158 Benchmark]: TraceAbstraction took 4431.76ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 51.9MB in the beginning and 32.2MB in the end (delta: 19.7MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,069 INFO L158 Benchmark]: Witness Printer took 33.54ms. Allocated memory is still 119.5MB. Free memory was 32.2MB in the beginning and 30.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:11:07,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 65.0MB. Free memory is still 42.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 753.01ms. Allocated memory is still 81.8MB. Free memory was 57.2MB in the beginning and 43.5MB in the end (delta: 13.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.38ms. Allocated memory is still 81.8MB. Free memory was 43.5MB in the beginning and 41.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.84ms. Allocated memory is still 81.8MB. Free memory was 41.3MB in the beginning and 39.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.71ms. Allocated memory is still 81.8MB. Free memory was 39.4MB in the beginning and 52.8MB in the end (delta: -13.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4431.76ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 51.9MB in the beginning and 32.2MB in the end (delta: 19.7MB). Peak memory consumption was 57.2MB. Max. memory is 16.1GB. * Witness Printer took 33.54ms. Allocated memory is still 119.5MB. Free memory was 32.2MB in the beginning and 30.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 134 PlacesBefore, 55 PlacesAfterwards, 121 TransitionsBefore, 41 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 85 TotalNumberOfCompositions, 2823 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1982, independent: 1872, independent conditional: 0, independent unconditional: 1872, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 716, independent: 674, independent conditional: 0, independent unconditional: 674, dependent: 42, dependent conditional: 0, dependent unconditional: 42, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1982, independent: 1198, independent conditional: 0, independent unconditional: 1198, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 716, unknown conditional: 0, unknown unconditional: 716] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1123]: 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 11 procedures, 224 locations, 12 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: 4.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 159 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 272 IncrementalHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 60 mSDtfsCounter, 272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=1, InterpolantAutomatonStates: 6, 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, 0.6s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 70 ConstructedInterpolants, 0 QuantifiedInterpolants, 238 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-08-30 16:11:07,085 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