./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.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 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d --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 09:48:38,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 09:48:38,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 09:48:38,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 09:48:38,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 09:48:38,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 09:48:38,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 09:48:38,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 09:48:38,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 09:48:38,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 09:48:38,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 09:48:38,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 09:48:38,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 09:48:38,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 09:48:38,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 09:48:38,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 09:48:38,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 09:48:38,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 09:48:38,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 09:48:38,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 09:48:38,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 09:48:38,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 09:48:38,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 09:48:38,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 09:48:38,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 09:48:38,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 09:48:38,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 09:48:38,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 09:48:38,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 09:48:38,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 09:48:38,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 09:48:38,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 09:48:38,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 09:48:38,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 09:48:38,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 09:48:38,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 09:48:38,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 09:48:38,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 09:48:38,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 09:48:38,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 09:48:38,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 09:48:38,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 09:48:38,410 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 09:48:38,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 09:48:38,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 09:48:38,411 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 09:48:38,412 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 09:48:38,412 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 09:48:38,413 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 09:48:38,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 09:48:38,413 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 09:48:38,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 09:48:38,414 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 09:48:38,414 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 09:48:38,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 09:48:38,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 09:48:38,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 09:48:38,416 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 09:48:38,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 09:48:38,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 09:48:38,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 09:48:38,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 09:48:38,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:48:38,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 09:48:38,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 09:48:38,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 09:48:38,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 09:48:38,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 09:48:38,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 09:48:38,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 09:48:38,418 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 09:48:38,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 09:48:38,418 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 09:48:38,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8627cbce136f39d723fc0eaadf7d8371bf261a07ec5ac59da2e79df34069083d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 09:48:38,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 09:48:38,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 09:48:38,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 09:48:38,700 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 09:48:38,701 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 09:48:38,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2023-08-30 09:48:39,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 09:48:39,930 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 09:48:39,930 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2023-08-30 09:48:39,941 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ec31c17/baf4d2ac86e44218aecb387752517e9d/FLAG4d1c26908 [2023-08-30 09:48:39,951 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17ec31c17/baf4d2ac86e44218aecb387752517e9d [2023-08-30 09:48:39,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 09:48:39,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 09:48:39,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 09:48:39,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 09:48:39,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 09:48:39,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:48:39" (1/1) ... [2023-08-30 09:48:39,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214a87af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:39, skipping insertion in model container [2023-08-30 09:48:39,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 09:48:39" (1/1) ... [2023-08-30 09:48:39,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 09:48:40,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 09:48:40,107 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2023-08-30 09:48:40,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:48:40,195 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 09:48:40,204 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2023-08-30 09:48:40,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 09:48:40,251 INFO L208 MainTranslator]: Completed translation [2023-08-30 09:48:40,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40 WrapperNode [2023-08-30 09:48:40,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 09:48:40,252 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 09:48:40,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 09:48:40,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 09:48:40,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,324 INFO L138 Inliner]: procedures = 162, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-08-30 09:48:40,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 09:48:40,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 09:48:40,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 09:48:40,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 09:48:40,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,337 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 09:48:40,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 09:48:40,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 09:48:40,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 09:48:40,340 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (1/1) ... [2023-08-30 09:48:40,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 09:48:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 09:48:40,398 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 09:48:40,416 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 09:48:40,424 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-30 09:48:40,425 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-30 09:48:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 09:48:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 09:48:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 09:48:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 09:48:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 09:48:40,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 09:48:40,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 09:48:40,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 09:48:40,427 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 09:48:40,548 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 09:48:40,549 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 09:48:40,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 09:48:40,646 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 09:48:40,646 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 09:48:40,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:48:40 BoogieIcfgContainer [2023-08-30 09:48:40,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 09:48:40,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 09:48:40,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 09:48:40,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 09:48:40,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 09:48:39" (1/3) ... [2023-08-30 09:48:40,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7612444d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:48:40, skipping insertion in model container [2023-08-30 09:48:40,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 09:48:40" (2/3) ... [2023-08-30 09:48:40,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7612444d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 09:48:40, skipping insertion in model container [2023-08-30 09:48:40,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:48:40" (3/3) ... [2023-08-30 09:48:40,652 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2023-08-30 09:48:40,657 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 09:48:40,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 09:48:40,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-30 09:48:40,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 09:48:40,695 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 09:48:40,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 70 transitions, 145 flow [2023-08-30 09:48:40,760 INFO L130 PetriNetUnfolder]: 4/69 cut-off events. [2023-08-30 09:48:40,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:48:40,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 4/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-30 09:48:40,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 70 transitions, 145 flow [2023-08-30 09:48:40,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 65 transitions, 133 flow [2023-08-30 09:48:40,777 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 09:48:40,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 65 transitions, 133 flow [2023-08-30 09:48:40,785 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 65 transitions, 133 flow [2023-08-30 09:48:40,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 65 transitions, 133 flow [2023-08-30 09:48:40,797 INFO L130 PetriNetUnfolder]: 3/65 cut-off events. [2023-08-30 09:48:40,797 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:48:40,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 65 events. 3/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-30 09:48:40,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 364 [2023-08-30 09:48:43,422 INFO L134 LiptonReduction]: Checked pairs total: 278 [2023-08-30 09:48:43,423 INFO L136 LiptonReduction]: Total number of compositions: 74 [2023-08-30 09:48:43,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 09:48:43,456 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;@16996a51, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 09:48:43,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-30 09:48:43,458 INFO L130 PetriNetUnfolder]: 1/5 cut-off events. [2023-08-30 09:48:43,458 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:48:43,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:48:43,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 09:48:43,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-08-30 09:48:43,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:48:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash 8918584, now seen corresponding path program 1 times [2023-08-30 09:48:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:48:43,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672558039] [2023-08-30 09:48:43,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:48:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:48:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:48:43,643 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 09:48:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:48:43,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672558039] [2023-08-30 09:48:43,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672558039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:48:43,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:48:43,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 09:48:43,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022086246] [2023-08-30 09:48:43,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:48:43,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 09:48:43,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:48:43,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 09:48:43,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 09:48:43,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 144 [2023-08-30 09:48:43,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 10 places, 7 transitions, 17 flow. Second operand has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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 09:48:43,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:48:43,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 144 [2023-08-30 09:48:43,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:48:43,697 INFO L130 PetriNetUnfolder]: 4/11 cut-off events. [2023-08-30 09:48:43,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:48:43,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 11 events. 4/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 2 based on Foata normal form. 0/9 useless extension candidates. Maximal degree in co-relation 18. Up to 12 conditions per place. [2023-08-30 09:48:43,698 INFO L137 encePairwiseOnDemand]: 143/144 looper letters, 6 selfloop transitions, 0 changer transitions 0/6 dead transitions. [2023-08-30 09:48:43,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-08-30 09:48:43,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 09:48:43,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 09:48:43,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 137 transitions. [2023-08-30 09:48:43,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2023-08-30 09:48:43,708 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 137 transitions. [2023-08-30 09:48:43,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 137 transitions. [2023-08-30 09:48:43,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:48:43,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 137 transitions. [2023-08-30 09:48:43,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 68.5) internal successors, (137), 2 states have internal predecessors, (137), 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 09:48:43,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 09:48:43,715 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 09:48:43,717 INFO L175 Difference]: Start difference. First operand has 10 places, 7 transitions, 17 flow. Second operand 2 states and 137 transitions. [2023-08-30 09:48:43,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-08-30 09:48:43,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 09:48:43,719 INFO L231 Difference]: Finished difference. Result has 9 places, 6 transitions, 14 flow [2023-08-30 09:48:43,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=14, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=14, PETRI_PLACES=9, PETRI_TRANSITIONS=6} [2023-08-30 09:48:43,723 INFO L281 CegarLoopForPetriNet]: 10 programPoint places, -1 predicate places. [2023-08-30 09:48:43,723 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 6 transitions, 14 flow [2023-08-30 09:48:43,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 67.0) internal successors, (134), 2 states have internal predecessors, (134), 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 09:48:43,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 09:48:43,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 09:48:43,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 09:48:43,724 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 2 more)] === [2023-08-30 09:48:43,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 09:48:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 8918599, now seen corresponding path program 1 times [2023-08-30 09:48:43,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 09:48:43,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58683867] [2023-08-30 09:48:43,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 09:48:43,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 09:48:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 09:48:43,782 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 09:48:43,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 09:48:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58683867] [2023-08-30 09:48:43,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58683867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 09:48:43,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 09:48:43,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 09:48:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829108966] [2023-08-30 09:48:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 09:48:43,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 09:48:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 09:48:43,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 09:48:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 09:48:43,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 144 [2023-08-30 09:48:43,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 6 transitions, 14 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 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) [2023-08-30 09:48:43,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 09:48:43,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 144 [2023-08-30 09:48:43,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 09:48:43,803 INFO L130 PetriNetUnfolder]: 3/8 cut-off events. [2023-08-30 09:48:43,803 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 09:48:43,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 8 events. 3/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 18. Up to 5 conditions per place. [2023-08-30 09:48:43,803 INFO L137 encePairwiseOnDemand]: 142/144 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-08-30 09:48:43,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 26 flow [2023-08-30 09:48:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 09:48:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 09:48:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 190 transitions. [2023-08-30 09:48:43,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2023-08-30 09:48:43,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 190 transitions. [2023-08-30 09:48:43,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 190 transitions. [2023-08-30 09:48:43,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 09:48:43,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 190 transitions. [2023-08-30 09:48:43,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.333333333333336) internal successors, (190), 3 states have internal predecessors, (190), 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 09:48:43,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 09:48:43,808 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 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 09:48:43,808 INFO L175 Difference]: Start difference. First operand has 9 places, 6 transitions, 14 flow. Second operand 3 states and 190 transitions. [2023-08-30 09:48:43,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 26 flow [2023-08-30 09:48:43,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 09:48:43,809 INFO L231 Difference]: Finished difference. Result has 10 places, 0 transitions, 0 flow [2023-08-30 09:48:43,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=10, PETRI_TRANSITIONS=0} [2023-08-30 09:48:43,810 INFO L281 CegarLoopForPetriNet]: 10 programPoint places, 0 predicate places. [2023-08-30 09:48:43,810 INFO L495 AbstractCegarLoop]: Abstraction has has 10 places, 0 transitions, 0 flow [2023-08-30 09:48:43,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 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) [2023-08-30 09:48:43,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-30 09:48:43,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 5 remaining) [2023-08-30 09:48:43,812 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 5 remaining) [2023-08-30 09:48:43,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 5 remaining) [2023-08-30 09:48:43,813 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 5 remaining) [2023-08-30 09:48:43,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 09:48:43,813 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 09:48:43,817 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 09:48:43,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 09:48:43,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 09:48:43 BasicIcfg [2023-08-30 09:48:43,819 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 09:48:43,820 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 09:48:43,820 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 09:48:43,820 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 09:48:43,820 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 09:48:40" (3/4) ... [2023-08-30 09:48:43,832 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 09:48:43,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2023-08-30 09:48:43,838 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-08-30 09:48:43,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 09:48:43,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 09:48:43,839 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 09:48:43,859 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 09:48:43,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 09:48:43,860 INFO L158 Benchmark]: Toolchain (without parser) took 3905.31ms. Allocated memory was 79.7MB in the beginning and 123.7MB in the end (delta: 44.0MB). Free memory was 55.6MB in the beginning and 98.0MB in the end (delta: -42.4MB). Peak memory consumption was 56.5MB. Max. memory is 16.1GB. [2023-08-30 09:48:43,861 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory is still 39.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 09:48:43,861 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.88ms. Allocated memory is still 79.7MB. Free memory was 55.4MB in the beginning and 36.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-30 09:48:43,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.93ms. Allocated memory is still 79.7MB. Free memory was 36.5MB in the beginning and 58.0MB in the end (delta: -21.5MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-08-30 09:48:43,861 INFO L158 Benchmark]: Boogie Preprocessor took 14.09ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 56.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 09:48:43,862 INFO L158 Benchmark]: RCFGBuilder took 308.12ms. Allocated memory is still 79.7MB. Free memory was 56.8MB in the beginning and 44.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 09:48:43,862 INFO L158 Benchmark]: TraceAbstraction took 3171.10ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 43.3MB in the beginning and 25.9MB in the end (delta: 17.3MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2023-08-30 09:48:43,862 INFO L158 Benchmark]: Witness Printer took 39.77ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 25.9MB in the beginning and 98.0MB in the end (delta: -72.0MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. [2023-08-30 09:48:43,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 62.9MB. Free memory is still 39.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.88ms. Allocated memory is still 79.7MB. Free memory was 55.4MB in the beginning and 36.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.93ms. Allocated memory is still 79.7MB. Free memory was 36.5MB in the beginning and 58.0MB in the end (delta: -21.5MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.09ms. Allocated memory is still 79.7MB. Free memory was 58.0MB in the beginning and 56.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 308.12ms. Allocated memory is still 79.7MB. Free memory was 56.8MB in the beginning and 44.2MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3171.10ms. Allocated memory was 79.7MB in the beginning and 102.8MB in the end (delta: 23.1MB). Free memory was 43.3MB in the beginning and 25.9MB in the end (delta: 17.3MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * Witness Printer took 39.77ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 25.9MB in the beginning and 98.0MB in the end (delta: -72.0MB). Peak memory consumption was 2.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 66 PlacesBefore, 10 PlacesAfterwards, 65 TransitionsBefore, 7 TransitionsAfterwards, 364 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 2 ChoiceCompositions, 74 TotalNumberOfCompositions, 278 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 278, independent: 278, independent conditional: 0, independent unconditional: 278, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 200, independent: 200, independent conditional: 0, independent unconditional: 200, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 278, independent: 78, independent conditional: 0, independent unconditional: 78, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 200, unknown conditional: 0, unknown unconditional: 200] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: 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, 95 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: 3.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 1 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.1s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 09:48:43,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE