./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.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_41-threadenter-no-locals_unknown_1_pos.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 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 --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 18:25:24,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:25:24,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:25:24,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:25:24,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:25:24,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:25:24,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:25:24,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:25:24,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:25:24,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:25:24,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:25:24,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:25:24,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:25:24,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:25:24,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:25:24,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:25:24,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:25:24,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:25:24,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:25:24,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:25:24,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:25:24,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:25:24,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:25:24,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:25:24,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:25:24,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:25:24,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:25:24,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:25:24,939 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:25:24,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:25:24,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:25:24,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:25:24,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:25:24,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:25:24,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:25:24,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:25:24,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:25:24,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:25:24,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:25:24,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:25:24,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:25:24,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:25:24,982 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:25:24,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:25:24,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:25:24,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:25:24,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:25:24,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:25:24,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:25:24,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:25:24,986 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:25:24,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:25:24,987 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:25:24,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:25:24,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:25:24,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:25:24,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:25:24,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:25:24,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:25:24,989 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:25:24,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:25:24,989 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:25:24,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:25:24,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:25:24,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:25:24,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:25:24,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:25:24,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:25:24,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:25:24,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:25:24,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:25:24,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:25:24,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:25:24,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:25:24,992 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:25:24,992 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:25:24,993 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:25:24,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:25:25,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:25:25,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:25:25,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:25:25,354 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:25:25,355 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:25:25,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 18:25:26,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:25:26,894 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:25:26,895 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 18:25:26,907 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef47da81/c749843dff5f4213bda007303ad2455c/FLAG48da80271 [2023-08-30 18:25:26,918 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef47da81/c749843dff5f4213bda007303ad2455c [2023-08-30 18:25:26,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:25:26,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:25:26,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:25:26,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:25:26,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:25:26,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:26" (1/1) ... [2023-08-30 18:25:26,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e7ef311 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:26, skipping insertion in model container [2023-08-30 18:25:26,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:26" (1/1) ... [2023-08-30 18:25:26,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:25:26,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:25:27,104 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_41-threadenter-no-locals_unknown_1_pos.i[1102,1115] [2023-08-30 18:25:27,202 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:25:27,210 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:25:27,220 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_41-threadenter-no-locals_unknown_1_pos.i[1102,1115] [2023-08-30 18:25:27,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:25:27,271 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:25:27,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27 WrapperNode [2023-08-30 18:25:27,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:25:27,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:25:27,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:25:27,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:25:27,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,303 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-08-30 18:25:27,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:25:27,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:25:27,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:25:27,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:25:27,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:25:27,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:25:27,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:25:27,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:25:27,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (1/1) ... [2023-08-30 18:25:27,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:25:27,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:25:27,350 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 18:25:27,359 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 18:25:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:25:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:25:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:25:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 18:25:27,388 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 18:25:27,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:25:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:25:27,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:25:27,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:25:27,390 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 18:25:27,516 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:25:27,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:25:27,614 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:25:27,623 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:25:27,628 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 18:25:27,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:27 BoogieIcfgContainer [2023-08-30 18:25:27,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:25:27,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:25:27,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:25:27,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:25:27,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:25:26" (1/3) ... [2023-08-30 18:25:27,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746ec404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:27, skipping insertion in model container [2023-08-30 18:25:27,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:27" (2/3) ... [2023-08-30 18:25:27,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746ec404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:27, skipping insertion in model container [2023-08-30 18:25:27,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:27" (3/3) ... [2023-08-30 18:25:27,654 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-08-30 18:25:27,663 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:25:27,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:25:27,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:25:27,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:25:27,730 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 18:25:27,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 81 flow [2023-08-30 18:25:27,800 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-08-30 18:25:27,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:27,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-08-30 18:25:27,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 81 flow [2023-08-30 18:25:27,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:27,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:25:27,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:27,833 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:27,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:27,856 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2023-08-30 18:25:27,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:27,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 32 events. 0/32 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-30 18:25:27,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 140 [2023-08-30 18:25:28,950 INFO L134 LiptonReduction]: Checked pairs total: 88 [2023-08-30 18:25:28,950 INFO L136 LiptonReduction]: Total number of compositions: 28 [2023-08-30 18:25:28,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:25:28,968 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;@23b4a2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:25:28,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 18:25:28,971 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 18:25:28,971 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:28,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:28,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 18:25:28,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-30 18:25:28,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:28,977 INFO L85 PathProgramCache]: Analyzing trace with hash 153046, now seen corresponding path program 1 times [2023-08-30 18:25:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:28,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670241905] [2023-08-30 18:25:28,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:28,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:25:29,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 18:25:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:25:29,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 18:25:29,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 18:25:29,107 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 18:25:29,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 18:25:29,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-30 18:25:29,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:25:29,109 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 18:25:29,115 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 18:25:29,115 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 18:25:29,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:25:29 BasicIcfg [2023-08-30 18:25:29,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 18:25:29,129 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 18:25:29,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 18:25:29,130 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 18:25:29,130 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:27" (3/4) ... [2023-08-30 18:25:29,132 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 18:25:29,190 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 18:25:29,191 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 18:25:29,215 INFO L158 Benchmark]: Toolchain (without parser) took 2292.84ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 47.6MB in the beginning and 72.8MB in the end (delta: -25.2MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2023-08-30 18:25:29,215 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 34.2MB in the beginning and 34.1MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:29,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.95ms. Allocated memory is still 79.7MB. Free memory was 47.4MB in the beginning and 48.9MB in the end (delta: -1.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-08-30 18:25:29,216 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.86ms. Allocated memory is still 79.7MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:25:29,217 INFO L158 Benchmark]: Boogie Preprocessor took 17.27ms. Allocated memory is still 79.7MB. Free memory was 47.2MB in the beginning and 45.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:29,217 INFO L158 Benchmark]: RCFGBuilder took 309.34ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 35.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 18:25:29,218 INFO L158 Benchmark]: TraceAbstraction took 1495.65ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 34.6MB in the beginning and 56.0MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:29,219 INFO L158 Benchmark]: Witness Printer took 61.48ms. Allocated memory is still 96.5MB. Free memory was 55.3MB in the beginning and 72.9MB in the end (delta: -17.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2023-08-30 18:25:29,221 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 34.2MB in the beginning and 34.1MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.95ms. Allocated memory is still 79.7MB. Free memory was 47.4MB in the beginning and 48.9MB in the end (delta: -1.5MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.86ms. Allocated memory is still 79.7MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.27ms. Allocated memory is still 79.7MB. Free memory was 47.2MB in the beginning and 45.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 309.34ms. Allocated memory is still 79.7MB. Free memory was 45.8MB in the beginning and 35.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1495.65ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 34.6MB in the beginning and 56.0MB in the end (delta: -21.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 61.48ms. Allocated memory is still 96.5MB. Free memory was 55.3MB in the beginning and 72.9MB in the end (delta: -17.6MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.1s, 36 PlacesBefore, 8 PlacesAfterwards, 32 TransitionsBefore, 4 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 28 TotalNumberOfCompositions, 88 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 88, independent: 88, independent conditional: 0, independent unconditional: 88, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 69, independent: 69, independent conditional: 0, independent unconditional: 69, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 88, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 69, unknown conditional: 0, unknown unconditional: 69] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int x = 3; [L689] 0 pthread_t id; [L690] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [id={3:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1, x=3] [L683] 1 int x = __VERIFIER_nondet_int(); [L684] CALL 1 __VERIFIER_assert(x == 3) [L19] COND TRUE 1 !(cond) [L19] 1 reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 690]: 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, 54 locations, 3 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: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 18:25:29,241 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