./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 --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 [2023-08-29 22:17:18,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:17:18,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:17:18,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:17:18,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:17:18,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:17:18,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:17:18,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:17:18,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:17:18,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:17:18,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:17:18,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:17:18,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:17:18,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:17:18,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:17:18,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:17:18,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:17:18,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:17:18,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:17:18,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:17:18,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:17:18,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:17:18,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:17:18,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:17:18,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:17:18,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:17:18,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:17:18,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:17:18,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:17:18,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:17:18,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:17:18,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:17:18,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:17:18,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:17:18,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:17:18,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:17:18,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:17:18,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:17:18,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:17:18,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:17:18,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:17:18,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:17:18,348 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:17:18,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:17:18,350 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:17:18,350 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:17:18,351 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:17:18,351 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:17:18,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:17:18,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:17:18,352 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:17:18,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:17:18,353 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:17:18,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:17:18,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:17:18,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:17:18,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:17:18,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:17:18,355 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:17:18,355 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:17:18,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:17:18,355 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:17:18,355 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:17:18,356 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:17:18,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:17:18,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:17:18,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:17:18,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:17:18,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:17:18,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:17:18,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:17:18,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:17:18,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:17:18,358 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:17:18,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:17:18,359 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:17:18,359 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:17:18,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:17:18,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:17:18,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:17:18,711 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:17:18,711 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:17:18,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-29 22:17:19,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:17:20,035 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:17:20,035 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-29 22:17:20,045 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60499248/e1b88f60221f4180917a4469056734dd/FLAG31ffbbe5d [2023-08-29 22:17:20,056 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b60499248/e1b88f60221f4180917a4469056734dd [2023-08-29 22:17:20,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:17:20,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:17:20,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:17:20,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:17:20,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:17:20,063 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6590019b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20, skipping insertion in model container [2023-08-29 22:17:20,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:17:20,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:17:20,268 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/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2023-08-29 22:17:20,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:17:20,438 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:17:20,453 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/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2023-08-29 22:17:20,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:17:20,527 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:17:20,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20 WrapperNode [2023-08-29 22:17:20,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:17:20,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:17:20,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:17:20,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:17:20,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,564 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,586 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-08-29 22:17:20,586 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:17:20,587 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:17:20,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:17:20,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:17:20,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:17:20,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:17:20,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:17:20,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:17:20,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (1/1) ... [2023-08-29 22:17:20,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:17:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:17:20,666 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) [2023-08-29 22:17:20,678 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 [2023-08-29 22:17:20,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 22:17:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:17:20,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:17:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:17:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 22:17:20,706 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 22:17:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:17:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 22:17:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:17:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:17:20,708 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:17:20,872 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:17:20,874 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:17:21,002 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:17:21,008 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:17:21,008 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:17:21,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:17:21 BoogieIcfgContainer [2023-08-29 22:17:21,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:17:21,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:17:21,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:17:21,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:17:21,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:17:20" (1/3) ... [2023-08-29 22:17:21,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b29cc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:17:21, skipping insertion in model container [2023-08-29 22:17:21,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:20" (2/3) ... [2023-08-29 22:17:21,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b29cc67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:17:21, skipping insertion in model container [2023-08-29 22:17:21,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:17:21" (3/3) ... [2023-08-29 22:17:21,017 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-29 22:17:21,030 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:17:21,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 22:17:21,031 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:17:21,072 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 22:17:21,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 163 flow [2023-08-29 22:17:21,130 INFO L130 PetriNetUnfolder]: 2/78 cut-off events. [2023-08-29 22:17:21,131 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:21,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-29 22:17:21,134 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 163 flow [2023-08-29 22:17:21,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:21,140 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:17:21,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:21,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:21,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:21,181 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-08-29 22:17:21,182 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:21,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-29 22:17:21,183 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-29 22:17:23,742 INFO L134 LiptonReduction]: Checked pairs total: 1726 [2023-08-29 22:17:23,743 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-29 22:17:23,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:17:23,760 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78079c61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:17:23,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-29 22:17:23,761 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 22:17:23,762 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:23,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:23,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:17:23,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:23,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:23,767 INFO L85 PathProgramCache]: Analyzing trace with hash 278, now seen corresponding path program 1 times [2023-08-29 22:17:23,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:17:23,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656267031] [2023-08-29 22:17:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:23,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:17:23,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:23,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:17:23,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656267031] [2023-08-29 22:17:23,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656267031] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:23,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:23,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:17:23,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348159440] [2023-08-29 22:17:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:23,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:17:23,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:17:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:17:23,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:17:23,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 150 [2023-08-29 22:17:23,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2023-08-29 22:17:23,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:23,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 150 [2023-08-29 22:17:23,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:23,969 INFO L130 PetriNetUnfolder]: 28/75 cut-off events. [2023-08-29 22:17:23,969 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:23,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 75 events. 28/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 267 event pairs, 24 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 132. Up to 62 conditions per place. [2023-08-29 22:17:23,973 INFO L137 encePairwiseOnDemand]: 148/150 looper letters, 13 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-29 22:17:23,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 65 flow [2023-08-29 22:17:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:17:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:17:23,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2023-08-29 22:17:23,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5566666666666666 [2023-08-29 22:17:23,986 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2023-08-29 22:17:23,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2023-08-29 22:17:23,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:23,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2023-08-29 22:17:23,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 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) [2023-08-29 22:17:24,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-08-29 22:17:24,000 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-08-29 22:17:24,002 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 43 flow. Second operand 2 states and 167 transitions. [2023-08-29 22:17:24,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 65 flow [2023-08-29 22:17:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:17:24,006 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 38 flow [2023-08-29 22:17:24,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-08-29 22:17:24,010 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-08-29 22:17:24,010 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 38 flow [2023-08-29 22:17:24,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2023-08-29 22:17:24,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:24,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 22:17:24,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 22:17:24,011 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:24,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:24,012 INFO L85 PathProgramCache]: Analyzing trace with hash -402456689, now seen corresponding path program 1 times [2023-08-29 22:17:24,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:17:24,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765326009] [2023-08-29 22:17:24,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:24,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:17:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:24,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:24,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:17:24,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765326009] [2023-08-29 22:17:24,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765326009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:24,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:24,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:17:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199008170] [2023-08-29 22:17:24,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:24,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:17:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:17:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:17:24,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:17:24,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2023-08-29 22:17:24,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-08-29 22:17:24,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:24,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2023-08-29 22:17:24,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:24,318 INFO L130 PetriNetUnfolder]: 40/117 cut-off events. [2023-08-29 22:17:24,318 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 117 events. 40/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 9 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 224. Up to 46 conditions per place. [2023-08-29 22:17:24,319 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 23 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-29 22:17:24,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 31 transitions, 120 flow [2023-08-29 22:17:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:17:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:17:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-29 22:17:24,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2023-08-29 22:17:24,322 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-29 22:17:24,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-29 22:17:24,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:24,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-29 22:17:24,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-08-29 22:17:24,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-29 22:17:24,326 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-29 22:17:24,326 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 38 flow. Second operand 4 states and 309 transitions. [2023-08-29 22:17:24,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 31 transitions, 120 flow [2023-08-29 22:17:24,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:17:24,328 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 68 flow [2023-08-29 22:17:24,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-29 22:17:24,329 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-29 22:17:24,357 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 68 flow [2023-08-29 22:17:24,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-08-29 22:17:24,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:24,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:17:24,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 22:17:24,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:24,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash 408745176, now seen corresponding path program 1 times [2023-08-29 22:17:24,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:17:24,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157263671] [2023-08-29 22:17:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:24,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:17:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:24,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 22:17:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157263671] [2023-08-29 22:17:24,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157263671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:24,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:17:24,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335672019] [2023-08-29 22:17:24,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:24,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:17:24,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 22:17:24,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:17:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:17:24,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 150 [2023-08-29 22:17:24,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-08-29 22:17:24,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:24,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 150 [2023-08-29 22:17:24,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:24,598 INFO L130 PetriNetUnfolder]: 28/93 cut-off events. [2023-08-29 22:17:24,598 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-29 22:17:24,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 93 events. 28/93 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 362 event pairs, 27 based on Foata normal form. 10/97 useless extension candidates. Maximal degree in co-relation 215. Up to 74 conditions per place. [2023-08-29 22:17:24,599 INFO L137 encePairwiseOnDemand]: 148/150 looper letters, 9 selfloop transitions, 1 changer transitions 4/19 dead transitions. [2023-08-29 22:17:24,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 92 flow [2023-08-29 22:17:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:17:24,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:17:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-29 22:17:24,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2023-08-29 22:17:24,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-29 22:17:24,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-29 22:17:24,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:24,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-29 22:17:24,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-29 22:17:24,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-29 22:17:24,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-29 22:17:24,605 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 68 flow. Second operand 3 states and 229 transitions. [2023-08-29 22:17:24,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 92 flow [2023-08-29 22:17:24,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:17:24,606 INFO L231 Difference]: Finished difference. Result has 28 places, 15 transitions, 52 flow [2023-08-29 22:17:24,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=15} [2023-08-29 22:17:24,607 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-08-29 22:17:24,607 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 15 transitions, 52 flow [2023-08-29 22:17:24,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-08-29 22:17:24,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:24,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:17:24,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 22:17:24,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:24,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1624888357, now seen corresponding path program 1 times [2023-08-29 22:17:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 22:17:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120627889] [2023-08-29 22:17:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 22:17:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:17:24,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 22:17:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:17:24,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 22:17:24,646 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 22:17:24,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-08-29 22:17:24,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-29 22:17:24,648 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-29 22:17:24,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-29 22:17:24,649 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-29 22:17:24,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 22:17:24,649 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 22:17:24,653 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:17:24,653 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:17:24,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:17:24 BasicIcfg [2023-08-29 22:17:24,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:17:24,679 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:17:24,679 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:17:24,679 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:17:24,680 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:17:21" (3/4) ... [2023-08-29 22:17:24,682 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 22:17:24,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:17:24,683 INFO L158 Benchmark]: Toolchain (without parser) took 4624.09ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 43.6MB in the beginning and 32.9MB in the end (delta: 10.7MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2023-08-29 22:17:24,683 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:24,684 INFO L158 Benchmark]: CACSL2BoogieTranslator took 468.60ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 41.7MB in the end (delta: 1.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2023-08-29 22:17:24,694 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.57ms. Allocated memory is still 75.5MB. Free memory was 41.5MB in the beginning and 39.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 22:17:24,695 INFO L158 Benchmark]: Boogie Preprocessor took 45.54ms. Allocated memory is still 75.5MB. Free memory was 39.5MB in the beginning and 38.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:24,698 INFO L158 Benchmark]: RCFGBuilder took 377.24ms. Allocated memory is still 75.5MB. Free memory was 38.3MB in the beginning and 46.1MB in the end (delta: -7.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:17:24,701 INFO L158 Benchmark]: TraceAbstraction took 3666.89ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.3MB in the beginning and 32.9MB in the end (delta: 12.5MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2023-08-29 22:17:24,702 INFO L158 Benchmark]: Witness Printer took 3.19ms. Allocated memory is still 92.3MB. Free memory is still 32.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:24,704 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 34.0MB in the beginning and 34.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 468.60ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 41.7MB in the end (delta: 1.6MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.57ms. Allocated memory is still 75.5MB. Free memory was 41.5MB in the beginning and 39.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.54ms. Allocated memory is still 75.5MB. Free memory was 39.5MB in the beginning and 38.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 377.24ms. Allocated memory is still 75.5MB. Free memory was 38.3MB in the beginning and 46.1MB in the end (delta: -7.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3666.89ms. Allocated memory was 75.5MB in the beginning and 92.3MB in the end (delta: 16.8MB). Free memory was 45.3MB in the beginning and 32.9MB in the end (delta: 12.5MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 3.19ms. Allocated memory is still 92.3MB. Free memory is still 32.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 76 PlacesBefore, 23 PlacesAfterwards, 74 TransitionsBefore, 20 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 1726 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 660, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 173, dependent conditional: 0, dependent unconditional: 173, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 284, independent: 254, independent conditional: 0, independent unconditional: 254, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 660, independent: 233, independent conditional: 0, independent unconditional: 233, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 284, unknown conditional: 0, unknown unconditional: 284] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, g=42, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, r=1] [L700] COND TRUE 0 \read(r) VAL [A={3:0}, B={4:0}, arg={0:0}, g=42, id={5:0}, r=1] [L701] 0 g = 17 VAL [A={3:0}, B={4:0}, arg={0:0}, g=17, id={5:0}, r=1] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 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: 3.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 3 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 22:17:24,727 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 --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 [2023-08-29 22:17:26,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:17:26,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:17:26,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:17:26,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:17:26,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:17:26,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:17:26,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:17:26,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:17:26,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:17:26,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:17:26,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:17:26,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:17:26,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:17:26,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:17:26,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:17:26,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:17:26,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:17:26,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:17:26,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:17:26,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:17:26,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:17:26,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:17:26,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:17:26,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:17:26,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:17:26,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:17:26,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:17:26,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:17:26,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:17:26,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:17:26,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:17:26,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:17:26,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:17:26,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:17:26,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:17:26,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:17:26,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:17:26,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:17:26,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:17:26,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:17:26,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 22:17:26,611 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:17:26,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:17:26,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:17:26,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:17:26,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:17:26,614 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:17:26,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:17:26,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:17:26,615 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:17:26,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:17:26,616 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:17:26,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:17:26,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:17:26,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:17:26,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:17:26,617 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:17:26,617 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:17:26,617 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:17:26,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:17:26,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:17:26,618 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 22:17:26,618 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 22:17:26,618 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:17:26,619 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:17:26,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:17:26,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:17:26,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:17:26,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:17:26,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:17:26,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:17:26,620 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 22:17:26,620 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 22:17:26,621 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:17:26,621 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:17:26,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:17:26,621 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 22:17:26,621 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:17:26,621 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:17:26,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:17:26,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:17:26,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:17:26,981 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:17:26,982 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:17:26,982 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-29 22:17:28,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:17:28,369 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:17:28,369 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-29 22:17:28,380 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b7deda4/5daeaf26c2474e50bec8fd0252ad329a/FLAG3b5fb774b [2023-08-29 22:17:28,392 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49b7deda4/5daeaf26c2474e50bec8fd0252ad329a [2023-08-29 22:17:28,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:17:28,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:17:28,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:17:28,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:17:28,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:17:28,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212f437e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28, skipping insertion in model container [2023-08-29 22:17:28,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,405 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:17:28,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:17:28,549 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/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2023-08-29 22:17:28,700 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:17:28,717 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:17:28,732 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/36-apron_17-traces-rpb-litmus_unknown_1_neg.i[1098,1111] [2023-08-29 22:17:28,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:17:28,832 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:17:28,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28 WrapperNode [2023-08-29 22:17:28,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:17:28,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:17:28,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:17:28,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:17:28,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,890 INFO L138 Inliner]: procedures = 167, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-08-29 22:17:28,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:17:28,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:17:28,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:17:28,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:17:28,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:17:28,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:17:28,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:17:28,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:17:28,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (1/1) ... [2023-08-29 22:17:28,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:17:28,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:17:28,978 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) [2023-08-29 22:17:28,985 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 [2023-08-29 22:17:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 22:17:29,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:17:29,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:17:29,011 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 22:17:29,012 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 22:17:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:17:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 22:17:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 22:17:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 22:17:29,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:17:29,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:17:29,014 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:17:29,203 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:17:29,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:17:29,456 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:17:29,462 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:17:29,462 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 22:17:29,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:17:29 BoogieIcfgContainer [2023-08-29 22:17:29,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:17:29,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:17:29,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:17:29,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:17:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:17:28" (1/3) ... [2023-08-29 22:17:29,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56822438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:17:29, skipping insertion in model container [2023-08-29 22:17:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:17:28" (2/3) ... [2023-08-29 22:17:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56822438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:17:29, skipping insertion in model container [2023-08-29 22:17:29,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:17:29" (3/3) ... [2023-08-29 22:17:29,473 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-29 22:17:29,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:17:29,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-29 22:17:29,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:17:29,573 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 22:17:29,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 163 flow [2023-08-29 22:17:29,629 INFO L130 PetriNetUnfolder]: 2/78 cut-off events. [2023-08-29 22:17:29,629 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:29,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-29 22:17:29,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 79 transitions, 163 flow [2023-08-29 22:17:29,636 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:29,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:17:29,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:29,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:29,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 151 flow [2023-08-29 22:17:29,664 INFO L130 PetriNetUnfolder]: 2/74 cut-off events. [2023-08-29 22:17:29,664 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:29,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 74 events. 2/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-29 22:17:29,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-29 22:17:33,578 INFO L134 LiptonReduction]: Checked pairs total: 1558 [2023-08-29 22:17:33,579 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-08-29 22:17:33,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:17:33,602 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@72bf0807, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:17:33,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-29 22:17:33,603 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 22:17:33,603 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:33,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:33,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 22:17:33,604 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:33,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:33,608 INFO L85 PathProgramCache]: Analyzing trace with hash 278, now seen corresponding path program 1 times [2023-08-29 22:17:33,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:33,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542911709] [2023-08-29 22:17:33,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:33,617 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:33,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:33,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:33,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 22:17:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:33,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 22:17:33,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:33,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:33,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:33,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542911709] [2023-08-29 22:17:33,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542911709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:33,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:33,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 22:17:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937478709] [2023-08-29 22:17:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:33,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 22:17:33,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 22:17:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 22:17:33,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 150 [2023-08-29 22:17:33,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2023-08-29 22:17:33,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:33,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 150 [2023-08-29 22:17:33,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:33,782 INFO L130 PetriNetUnfolder]: 28/75 cut-off events. [2023-08-29 22:17:33,782 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:33,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 75 events. 28/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 267 event pairs, 24 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 132. Up to 62 conditions per place. [2023-08-29 22:17:33,799 INFO L137 encePairwiseOnDemand]: 148/150 looper letters, 13 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-29 22:17:33,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 18 transitions, 65 flow [2023-08-29 22:17:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 22:17:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 22:17:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2023-08-29 22:17:33,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5566666666666666 [2023-08-29 22:17:33,809 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 167 transitions. [2023-08-29 22:17:33,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 167 transitions. [2023-08-29 22:17:33,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:33,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 167 transitions. [2023-08-29 22:17:33,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 83.5) internal successors, (167), 2 states have internal predecessors, (167), 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) [2023-08-29 22:17:33,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-08-29 22:17:33,839 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 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) [2023-08-29 22:17:33,841 INFO L175 Difference]: Start difference. First operand has 23 places, 20 transitions, 43 flow. Second operand 2 states and 167 transitions. [2023-08-29 22:17:33,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 18 transitions, 65 flow [2023-08-29 22:17:33,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:17:33,845 INFO L231 Difference]: Finished difference. Result has 21 places, 18 transitions, 38 flow [2023-08-29 22:17:33,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=18} [2023-08-29 22:17:33,849 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-08-29 22:17:33,849 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 18 transitions, 38 flow [2023-08-29 22:17:33,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 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) [2023-08-29 22:17:33,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:33,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 22:17:33,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:34,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:34,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash -431056978, now seen corresponding path program 1 times [2023-08-29 22:17:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:34,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369992506] [2023-08-29 22:17:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:34,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:34,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:34,069 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:34,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 22:17:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:34,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 22:17:34,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:34,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:34,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:34,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:34,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369992506] [2023-08-29 22:17:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369992506] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:34,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:17:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205082150] [2023-08-29 22:17:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:34,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:17:34,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:34,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:17:34,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:17:34,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 150 [2023-08-29 22:17:34,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 18 transitions, 38 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-08-29 22:17:34,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:34,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 150 [2023-08-29 22:17:34,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:34,309 INFO L130 PetriNetUnfolder]: 40/117 cut-off events. [2023-08-29 22:17:34,309 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:17:34,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 117 events. 40/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 9 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 224. Up to 46 conditions per place. [2023-08-29 22:17:34,310 INFO L137 encePairwiseOnDemand]: 144/150 looper letters, 23 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-29 22:17:34,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 31 transitions, 120 flow [2023-08-29 22:17:34,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:17:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:17:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2023-08-29 22:17:34,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515 [2023-08-29 22:17:34,314 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 309 transitions. [2023-08-29 22:17:34,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 309 transitions. [2023-08-29 22:17:34,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:34,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 309 transitions. [2023-08-29 22:17:34,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2023-08-29 22:17:34,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-29 22:17:34,319 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 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) [2023-08-29 22:17:34,319 INFO L175 Difference]: Start difference. First operand has 21 places, 18 transitions, 38 flow. Second operand 4 states and 309 transitions. [2023-08-29 22:17:34,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 31 transitions, 120 flow [2023-08-29 22:17:34,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 31 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:17:34,321 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 68 flow [2023-08-29 22:17:34,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-29 22:17:34,322 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 4 predicate places. [2023-08-29 22:17:34,322 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 68 flow [2023-08-29 22:17:34,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 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) [2023-08-29 22:17:34,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:34,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:17:34,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:34,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:34,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:34,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:34,533 INFO L85 PathProgramCache]: Analyzing trace with hash -477863782, now seen corresponding path program 1 times [2023-08-29 22:17:34,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:34,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794208014] [2023-08-29 22:17:34,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:34,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:34,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:34,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:34,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 22:17:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:17:34,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 22:17:34,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:17:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:17:34,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:17:34,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:17:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794208014] [2023-08-29 22:17:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794208014] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:17:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:17:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:17:34,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143789024] [2023-08-29 22:17:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:17:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:17:34,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:17:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:17:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:17:34,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 150 [2023-08-29 22:17:34,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-08-29 22:17:34,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:17:34,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 150 [2023-08-29 22:17:34,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:17:34,814 INFO L130 PetriNetUnfolder]: 28/93 cut-off events. [2023-08-29 22:17:34,815 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-08-29 22:17:34,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 93 events. 28/93 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 364 event pairs, 27 based on Foata normal form. 10/97 useless extension candidates. Maximal degree in co-relation 215. Up to 74 conditions per place. [2023-08-29 22:17:34,816 INFO L137 encePairwiseOnDemand]: 148/150 looper letters, 9 selfloop transitions, 1 changer transitions 4/19 dead transitions. [2023-08-29 22:17:34,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 19 transitions, 92 flow [2023-08-29 22:17:34,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:17:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:17:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-29 22:17:34,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088888888888888 [2023-08-29 22:17:34,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-29 22:17:34,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-29 22:17:34,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:17:34,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-29 22:17:34,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 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) [2023-08-29 22:17:34,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-29 22:17:34,826 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 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) [2023-08-29 22:17:34,826 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 68 flow. Second operand 3 states and 229 transitions. [2023-08-29 22:17:34,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 19 transitions, 92 flow [2023-08-29 22:17:34,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 19 transitions, 92 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 22:17:34,829 INFO L231 Difference]: Finished difference. Result has 28 places, 15 transitions, 52 flow [2023-08-29 22:17:34,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=28, PETRI_TRANSITIONS=15} [2023-08-29 22:17:34,830 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 5 predicate places. [2023-08-29 22:17:34,830 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 15 transitions, 52 flow [2023-08-29 22:17:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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) [2023-08-29 22:17:34,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:17:34,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:17:34,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:35,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:35,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-08-29 22:17:35,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:17:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash 984182335, now seen corresponding path program 1 times [2023-08-29 22:17:35,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:17:35,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913689322] [2023-08-29 22:17:35,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:17:35,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:35,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:17:35,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:17:35,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 22:17:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:17:35,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 22:17:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 22:17:35,169 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 22:17:35,169 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 22:17:35,170 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-08-29 22:17:35,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-08-29 22:17:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-08-29 22:17:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-08-29 22:17:35,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-29 22:17:35,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 22:17:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:17:35,373 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 22:17:35,377 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 22:17:35,377 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 22:17:35,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:17:35 BasicIcfg [2023-08-29 22:17:35,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 22:17:35,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 22:17:35,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 22:17:35,394 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 22:17:35,395 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:17:29" (3/4) ... [2023-08-29 22:17:35,397 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 22:17:35,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 22:17:35,398 INFO L158 Benchmark]: Toolchain (without parser) took 7003.39ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 58.9MB in the beginning and 33.1MB in the end (delta: 25.8MB). Peak memory consumption was 44.7MB. Max. memory is 16.1GB. [2023-08-29 22:17:35,398 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:35,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.38ms. Allocated memory is still 81.8MB. Free memory was 58.7MB in the beginning and 59.0MB in the end (delta: -282.7kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. [2023-08-29 22:17:35,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.23ms. Allocated memory is still 81.8MB. Free memory was 58.6MB in the beginning and 56.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:35,399 INFO L158 Benchmark]: Boogie Preprocessor took 52.67ms. Allocated memory is still 81.8MB. Free memory was 56.9MB in the beginning and 55.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:35,400 INFO L158 Benchmark]: RCFGBuilder took 519.96ms. Allocated memory is still 81.8MB. Free memory was 55.0MB in the beginning and 40.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-29 22:17:35,400 INFO L158 Benchmark]: TraceAbstraction took 5928.06ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 39.4MB in the beginning and 33.1MB in the end (delta: 6.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2023-08-29 22:17:35,400 INFO L158 Benchmark]: Witness Printer took 3.08ms. Allocated memory is still 98.6MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:17:35,403 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.38ms. Allocated memory is still 81.8MB. Free memory was 58.7MB in the beginning and 59.0MB in the end (delta: -282.7kB). Peak memory consumption was 23.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.23ms. Allocated memory is still 81.8MB. Free memory was 58.6MB in the beginning and 56.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.67ms. Allocated memory is still 81.8MB. Free memory was 56.9MB in the beginning and 55.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 519.96ms. Allocated memory is still 81.8MB. Free memory was 55.0MB in the beginning and 40.2MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5928.06ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 39.4MB in the beginning and 33.1MB in the end (delta: 6.3MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Witness Printer took 3.08ms. Allocated memory is still 98.6MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 76 PlacesBefore, 23 PlacesAfterwards, 74 TransitionsBefore, 20 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 41 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 71 TotalNumberOfCompositions, 1558 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 619, independent: 470, independent conditional: 0, independent unconditional: 470, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 284, independent: 254, independent conditional: 0, independent unconditional: 254, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 619, independent: 216, independent conditional: 0, independent unconditional: 216, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 284, unknown conditional: 0, unknown unconditional: 284] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 19]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 19. Possible FailurePath: [L682] 0 int g = 42; [L683] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L684] 0 pthread_mutex_t B = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L694] 0 int r = __VERIFIER_nondet_int(); [L695] 0 int t; [L696] 0 pthread_t id; [L697] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, B={4:0}, arg={0:0}, g=42, id={7:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=0] [L700] COND TRUE 0 \read(r) VAL [A={3:0}, B={4:0}, arg={0:0}, g=42, id={7:0}, r=2] [L701] 0 g = 17 VAL [A={3:0}, B={4:0}, arg={0:0}, g=17, id={7:0}, r=2] [L705] 0 t = g [L706] CALL 0 __VERIFIER_assert(!(t == 17)) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [A={3:0}, B={4:0}, \old(cond)=0, arg={0:0}, cond=0, g=17] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 697]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 90 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: 5.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 20 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 11 ConstructedInterpolants, 6 QuantifiedInterpolants, 93 SizeOfPredicates, 1 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 22:17:35,426 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: UNKNOWN: Overapproximated counterexample