./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.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 ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 [2023-08-30 18:24:27,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:24:27,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:24:27,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:24:27,654 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:24:27,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:24:27,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:24:27,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:24:27,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:24:27,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:24:27,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:24:27,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:24:27,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:24:27,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:24:27,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:24:27,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:24:27,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:24:27,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:24:27,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:24:27,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:24:27,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:24:27,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:24:27,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:24:27,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:24:27,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:24:27,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:24:27,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:24:27,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:24:27,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:24:27,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:24:27,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:24:27,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:24:27,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:24:27,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:24:27,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:24:27,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:24:27,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:24:27,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:24:27,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:24:27,716 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:24:27,717 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:24:27,718 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:24:27,756 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:24:27,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:24:27,758 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:24:27,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:24:27,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:24:27,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:24:27,759 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:24:27,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:24:27,760 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:24:27,760 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:24:27,761 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:24:27,761 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:24:27,761 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:24:27,761 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:24:27,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:24:27,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:24:27,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:24:27,762 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:24:27,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:24:27,762 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:24:27,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:24:27,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:24:27,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:24:27,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:24:27,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:24:27,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:24:27,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:24:27,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:24:27,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:24:27,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:24:27,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:24:27,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:24:27,765 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:24:27,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:24:27,765 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:24:27,765 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36105814f7d14243ca8b55776979fcada1717aa30ae4c259b302358b1f244a48 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:24:28,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:24:28,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:24:28,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:24:28,112 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:24:28,112 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:24:28,113 INFO L432 ainManager$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 [2023-08-30 18:24:29,269 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:24:29,453 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:24:29,454 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-30 18:24:29,469 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d5da799/d28a256fc6e44acb9445a820db22f7b4/FLAGa70236df7 [2023-08-30 18:24:29,480 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1d5da799/d28a256fc6e44acb9445a820db22f7b4 [2023-08-30 18:24:29,482 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:24:29,483 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:24:29,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:24:29,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:24:29,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:24:29,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:29,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38681286 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29, skipping insertion in model container [2023-08-30 18:24:29,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:29,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:24:29,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:24:29,701 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] [2023-08-30 18:24:29,866 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:24:29,878 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:24:29,892 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] [2023-08-30 18:24:29,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:24:29,972 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:24:29,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29 WrapperNode [2023-08-30 18:24:29,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:24:29,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:24:29,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:24:29,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:24:29,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,032 INFO L138 Inliner]: procedures = 163, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2023-08-30 18:24:30,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:24:30,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:24:30,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:24:30,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:24:30,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,067 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:24:30,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:24:30,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:24:30,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:24:30,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (1/1) ... [2023-08-30 18:24:30,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:24:30,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:24:30,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 18:24:30,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 18:24:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:24:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 18:24:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:24:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:24:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 18:24:30,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 18:24:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:24:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:24:30,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:24:30,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:24:30,152 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 18:24:30,347 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:24:30,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:24:30,524 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:24:30,529 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:24:30,529 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 18:24:30,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:24:30 BoogieIcfgContainer [2023-08-30 18:24:30,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:24:30,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:24:30,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:24:30,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:24:30,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:24:29" (1/3) ... [2023-08-30 18:24:30,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b170113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:24:30, skipping insertion in model container [2023-08-30 18:24:30,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:24:29" (2/3) ... [2023-08-30 18:24:30,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b170113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:24:30, skipping insertion in model container [2023-08-30 18:24:30,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:24:30" (3/3) ... [2023-08-30 18:24:30,540 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_17-traces-rpb-litmus_unknown_1_neg.i [2023-08-30 18:24:30,547 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:24:30,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:24:30,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:24:30,555 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:24:30,620 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 18:24:30,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 73 transitions, 151 flow [2023-08-30 18:24:30,713 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2023-08-30 18:24:30,714 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:24:30,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 72 events. 2/72 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 43 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-08-30 18:24:30,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 73 transitions, 151 flow [2023-08-30 18:24:30,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 62 transitions, 127 flow [2023-08-30 18:24:30,727 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:24:30,741 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 62 transitions, 127 flow [2023-08-30 18:24:30,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 62 transitions, 127 flow [2023-08-30 18:24:30,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 62 transitions, 127 flow [2023-08-30 18:24:30,782 INFO L130 PetriNetUnfolder]: 1/62 cut-off events. [2023-08-30 18:24:30,782 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:24:30,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 62 events. 1/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-08-30 18:24:30,784 INFO L119 LiptonReduction]: Number of co-enabled transitions 360 [2023-08-30 18:24:33,275 INFO L134 LiptonReduction]: Checked pairs total: 1016 [2023-08-30 18:24:33,276 INFO L136 LiptonReduction]: Total number of compositions: 52 [2023-08-30 18:24:33,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:24:33,292 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5f6ec6bd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:24:33,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-30 18:24:33,295 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2023-08-30 18:24:33,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:24:33,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:24:33,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 18:24:33,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 18:24:33,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:24:33,301 INFO L85 PathProgramCache]: Analyzing trace with hash 235099129, now seen corresponding path program 1 times [2023-08-30 18:24:33,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:24:33,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376711996] [2023-08-30 18:24:33,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:24:33,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:24:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 18:24:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 18:24:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 18:24:33,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376711996] [2023-08-30 18:24:33,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376711996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 18:24:33,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 18:24:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 18:24:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888088731] [2023-08-30 18:24:33,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 18:24:33,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 18:24:33,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 18:24:33,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 18:24:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 18:24:33,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 125 [2023-08-30 18:24:33,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 31 flow. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:24:33,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 18:24:33,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 125 [2023-08-30 18:24:33,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 18:24:33,687 INFO L130 PetriNetUnfolder]: 14/54 cut-off events. [2023-08-30 18:24:33,687 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:24:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 54 events. 14/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 161 event pairs, 6 based on Foata normal form. 2/54 useless extension candidates. Maximal degree in co-relation 95. Up to 27 conditions per place. [2023-08-30 18:24:33,689 INFO L137 encePairwiseOnDemand]: 120/125 looper letters, 10 selfloop transitions, 3 changer transitions 1/17 dead transitions. [2023-08-30 18:24:33,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 17 transitions, 65 flow [2023-08-30 18:24:33,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 18:24:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 18:24:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-30 18:24:33,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5786666666666667 [2023-08-30 18:24:33,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-30 18:24:33,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-30 18:24:33,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 18:24:33,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-30 18:24:33,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:24:33,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:24:33,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 125.0) internal successors, (500), 4 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:24:33,721 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 31 flow. Second operand 3 states and 217 transitions. [2023-08-30 18:24:33,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 17 transitions, 65 flow [2023-08-30 18:24:33,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 17 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 18:24:33,724 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 46 flow [2023-08-30 18:24:33,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=125, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 18:24:33,731 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 3 predicate places. [2023-08-30 18:24:33,731 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 46 flow [2023-08-30 18:24:33,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 18:24:33,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:24:33,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 18:24:33,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:24:33,733 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 18:24:33,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:24:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1253792415, now seen corresponding path program 1 times [2023-08-30 18:24:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:24:33,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439128666] [2023-08-30 18:24:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:24:33,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:24:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:24:33,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 18:24:33,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:24:33,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 18:24:33,812 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 18:24:33,814 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-30 18:24:33,815 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-30 18:24:33,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 18:24:33,816 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-30 18:24:33,820 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 18:24:33,820 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 18:24:33,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:24:33 BasicIcfg [2023-08-30 18:24:33,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 18:24:33,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 18:24:33,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 18:24:33,838 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 18:24:33,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:24:30" (3/4) ... [2023-08-30 18:24:33,840 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 18:24:33,871 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 18:24:33,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 18:24:33,872 INFO L158 Benchmark]: Toolchain (without parser) took 4389.09ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 38.8MB in the beginning and 47.8MB in the end (delta: -9.0MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2023-08-30 18:24:33,872 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 30.7MB in the beginning and 30.6MB in the end (delta: 54.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:24:33,873 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.21ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 39.0MB in the end (delta: -382.2kB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-08-30 18:24:33,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.70ms. Allocated memory is still 69.2MB. Free memory was 39.0MB in the beginning and 36.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:24:33,874 INFO L158 Benchmark]: Boogie Preprocessor took 36.51ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:24:33,874 INFO L158 Benchmark]: RCFGBuilder took 460.52ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2023-08-30 18:24:33,874 INFO L158 Benchmark]: TraceAbstraction took 3303.27ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 39.3MB in the beginning and 49.9MB in the end (delta: -10.7MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2023-08-30 18:24:33,875 INFO L158 Benchmark]: Witness Printer took 33.48ms. Allocated memory is still 100.7MB. Free memory was 49.9MB in the beginning and 47.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:24:33,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory was 30.7MB in the beginning and 30.6MB in the end (delta: 54.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.21ms. Allocated memory is still 69.2MB. Free memory was 38.6MB in the beginning and 39.0MB in the end (delta: -382.2kB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.70ms. Allocated memory is still 69.2MB. Free memory was 39.0MB in the beginning and 36.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.51ms. Allocated memory is still 69.2MB. Free memory was 36.9MB in the beginning and 35.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 460.52ms. Allocated memory is still 69.2MB. Free memory was 35.6MB in the beginning and 39.7MB in the end (delta: -4.1MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3303.27ms. Allocated memory was 69.2MB in the beginning and 100.7MB in the end (delta: 31.5MB). Free memory was 39.3MB in the beginning and 49.9MB in the end (delta: -10.7MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 33.48ms. Allocated memory is still 100.7MB. Free memory was 49.9MB in the beginning and 47.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 65 PlacesBefore, 17 PlacesAfterwards, 62 TransitionsBefore, 14 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 52 TotalNumberOfCompositions, 1016 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 449, independent: 327, independent conditional: 0, independent unconditional: 327, dependent: 122, dependent conditional: 0, dependent unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 195, independent: 170, independent conditional: 0, independent unconditional: 170, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 449, independent: 157, independent conditional: 0, independent unconditional: 157, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 195, unknown conditional: 0, unknown unconditional: 195] , Statistics on independence cache: Total cache size (in pairs): 28, Positive cache size: 14, Positive conditional cache size: 0, Positive unconditional cache size: 14, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a 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) [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: 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, 84 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be incorrect! [2023-08-30 18:24:33,895 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE