./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_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_41-threadenter-no-locals_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 efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 --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 18:25:18,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 18:25:18,036 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 18:25:18,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 18:25:18,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 18:25:18,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 18:25:18,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 18:25:18,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 18:25:18,066 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 18:25:18,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 18:25:18,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 18:25:18,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 18:25:18,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 18:25:18,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 18:25:18,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 18:25:18,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 18:25:18,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 18:25:18,082 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 18:25:18,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 18:25:18,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 18:25:18,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 18:25:18,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 18:25:18,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 18:25:18,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 18:25:18,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 18:25:18,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 18:25:18,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 18:25:18,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 18:25:18,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 18:25:18,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 18:25:18,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 18:25:18,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 18:25:18,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 18:25:18,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 18:25:18,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 18:25:18,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 18:25:18,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 18:25:18,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 18:25:18,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 18:25:18,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 18:25:18,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 18:25:18,121 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 18:25:18,151 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 18:25:18,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 18:25:18,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 18:25:18,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 18:25:18,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 18:25:18,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 18:25:18,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 18:25:18,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 18:25:18,155 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 18:25:18,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 18:25:18,156 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 18:25:18,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 18:25:18,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 18:25:18,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 18:25:18,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 18:25:18,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 18:25:18,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 18:25:18,157 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 18:25:18,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 18:25:18,158 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 18:25:18,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 18:25:18,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 18:25:18,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 18:25:18,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 18:25:18,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:25:18,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 18:25:18,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 18:25:18,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 18:25:18,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 18:25:18,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 18:25:18,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 18:25:18,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 18:25:18,160 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 18:25:18,161 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 18:25:18,161 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 18:25:18,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efd273c7d755fee5b08c1ba81e4b1fd2265522d7f0703d6f8ec42ad387cd2968 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 18:25:18,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 18:25:18,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 18:25:18,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 18:25:18,491 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 18:25:18,492 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 18:25:18,493 INFO L432 ainManager$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_neg.i [2023-08-30 18:25:19,686 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 18:25:19,936 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 18:25:19,937 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-30 18:25:19,956 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225617e34/02251ee7ae1d4ef7b58f3dbde2c44886/FLAGacf47b725 [2023-08-30 18:25:19,969 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/225617e34/02251ee7ae1d4ef7b58f3dbde2c44886 [2023-08-30 18:25:19,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 18:25:19,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 18:25:19,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 18:25:19,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 18:25:19,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 18:25:19,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:19" (1/1) ... [2023-08-30 18:25:19,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f79c307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:19, skipping insertion in model container [2023-08-30 18:25:19,980 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:19" (1/1) ... [2023-08-30 18:25:19,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 18:25:20,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 18:25:20,155 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_neg.i[1102,1115] [2023-08-30 18:25:20,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:25:20,331 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 18:25:20,342 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_neg.i[1102,1115] [2023-08-30 18:25:20,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 18:25:20,456 INFO L208 MainTranslator]: Completed translation [2023-08-30 18:25:20,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20 WrapperNode [2023-08-30 18:25:20,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 18:25:20,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 18:25:20,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 18:25:20,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 18:25:20,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,517 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-08-30 18:25:20,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 18:25:20,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 18:25:20,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 18:25:20,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 18:25:20,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 18:25:20,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 18:25:20,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 18:25:20,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 18:25:20,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (1/1) ... [2023-08-30 18:25:20,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 18:25:20,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 18:25:20,582 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 18:25:20,615 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 18:25:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 18:25:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 18:25:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 18:25:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 18:25:20,629 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 18:25:20,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 18:25:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 18:25:20,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 18:25:20,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 18:25:20,631 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 18:25:20,786 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 18:25:20,787 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 18:25:20,874 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 18:25:20,880 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 18:25:20,880 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 18:25:20,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:20 BoogieIcfgContainer [2023-08-30 18:25:20,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 18:25:20,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 18:25:20,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 18:25:20,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 18:25:20,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:25:19" (1/3) ... [2023-08-30 18:25:20,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6e1feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:20, skipping insertion in model container [2023-08-30 18:25:20,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:20" (2/3) ... [2023-08-30 18:25:20,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6e1feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:20, skipping insertion in model container [2023-08-30 18:25:20,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:20" (3/3) ... [2023-08-30 18:25:20,889 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_neg.i [2023-08-30 18:25:20,896 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 18:25:20,904 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 18:25:20,904 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 18:25:20,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 18:25:20,965 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 18:25:20,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 81 flow [2023-08-30 18:25:21,037 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-08-30 18:25:21,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:21,044 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 18:25:21,044 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 81 flow [2023-08-30 18:25:21,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:21,053 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 18:25:21,076 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:21,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:21,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 67 flow [2023-08-30 18:25:21,089 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2023-08-30 18:25:21,090 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:21,090 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 18:25:21,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 140 [2023-08-30 18:25:22,189 INFO L134 LiptonReduction]: Checked pairs total: 88 [2023-08-30 18:25:22,189 INFO L136 LiptonReduction]: Total number of compositions: 28 [2023-08-30 18:25:22,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 18:25:22,211 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;@64a0b907, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 18:25:22,211 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 18:25:22,221 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-30 18:25:22,221 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 18:25:22,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 18:25:22,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 18:25:22,224 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 18:25:22,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 18:25:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 153046, now seen corresponding path program 1 times [2023-08-30 18:25:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 18:25:22,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077342609] [2023-08-30 18:25:22,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 18:25:22,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 18:25:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:25:22,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 18:25:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 18:25:22,395 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 18:25:22,396 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 18:25:22,397 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 18:25:22,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 18:25:22,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-30 18:25:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 18:25:22,402 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-30 18:25:22,411 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 18:25:22,412 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 18:25:22,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 06:25:22 BasicIcfg [2023-08-30 18:25:22,429 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 18:25:22,430 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 18:25:22,430 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 18:25:22,430 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 18:25:22,431 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:20" (3/4) ... [2023-08-30 18:25:22,432 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-08-30 18:25:22,478 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 18:25:22,479 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 18:25:22,479 INFO L158 Benchmark]: Toolchain (without parser) took 2507.16ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 38.1MB in the end (delta: 10.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2023-08-30 18:25:22,480 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:22,480 INFO L158 Benchmark]: CACSL2BoogieTranslator took 492.49ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 47.9MB in the end (delta: -46.8kB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2023-08-30 18:25:22,481 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.16ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 46.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:25:22,481 INFO L158 Benchmark]: Boogie Preprocessor took 30.83ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 44.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:22,482 INFO L158 Benchmark]: RCFGBuilder took 331.86ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 34.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 18:25:22,483 INFO L158 Benchmark]: TraceAbstraction took 1545.62ms. Allocated memory is still 71.3MB. Free memory was 33.8MB in the beginning and 39.7MB in the end (delta: -5.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 18:25:22,483 INFO L158 Benchmark]: Witness Printer took 48.57ms. Allocated memory is still 71.3MB. Free memory was 39.7MB in the beginning and 38.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 18:25:22,486 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 32.1MB in the beginning and 32.0MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 492.49ms. Allocated memory is still 71.3MB. Free memory was 47.8MB in the beginning and 47.9MB in the end (delta: -46.8kB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.16ms. Allocated memory is still 71.3MB. Free memory was 47.9MB in the beginning and 46.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.83ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 44.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 331.86ms. Allocated memory is still 71.3MB. Free memory was 44.8MB in the beginning and 34.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1545.62ms. Allocated memory is still 71.3MB. Free memory was 33.8MB in the beginning and 39.7MB in the end (delta: -5.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.57ms. Allocated memory is still 71.3MB. Free memory was 39.7MB in the beginning and 38.1MB in the end (delta: 1.7MB). 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: 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 18:25:22,504 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