./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 BEFORE --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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 11:24:12,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:24:12,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:24:12,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:24:12,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:24:12,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:24:12,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:24:12,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:24:12,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:24:12,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:24:12,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:24:12,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:24:12,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:24:12,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:24:12,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:24:12,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:24:12,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:24:12,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:24:12,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:24:12,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:24:12,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:24:12,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:24:12,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:24:12,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:24:12,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:24:12,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:24:12,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:24:12,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:24:12,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:24:12,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:24:12,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:24:12,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:24:12,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:24:12,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:24:12,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:24:12,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:24:12,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:24:12,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:24:12,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:24:12,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:24:12,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:24:12,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:24:12,647 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:24:12,648 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:24:12,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:24:12,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:24:12,649 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:24:12,649 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:24:12,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:24:12,650 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:24:12,650 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:24:12,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:24:12,651 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:24:12,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:24:12,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:24:12,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:24:12,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:24:12,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:24:12,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:24:12,653 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:24:12,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:24:12,653 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:24:12,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:24:12,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:24:12,654 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:24:12,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:24:12,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:24:12,655 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:24:12,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:24:12,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:24:12,655 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:24:12,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:24:12,656 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:24:12,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:24:12,656 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:24:12,656 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:24:12,657 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:24:12,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89785c0d24fcdefc69967ffaff157c690c4dc9452939a731c93e500faa24c4d7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:24:12,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:24:12,991 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:24:12,994 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:24:12,995 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:24:12,996 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:24:12,997 INFO L432 ainManager$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 [2023-09-01 11:24:14,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:24:14,443 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:24:14,444 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-09-01 11:24:14,454 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93298c1e/1c5cfb91e9e44e279ef3f5e898eda45f/FLAG5526e6699 [2023-09-01 11:24:14,469 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c93298c1e/1c5cfb91e9e44e279ef3f5e898eda45f [2023-09-01 11:24:14,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:24:14,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:24:14,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:24:14,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:24:14,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:24:14,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:14,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e657803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14, skipping insertion in model container [2023-09-01 11:24:14,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:14,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:24:14,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:24:14,696 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] [2023-09-01 11:24:14,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:24:14,853 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:24:14,865 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] [2023-09-01 11:24:14,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:24:14,934 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:24:14,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14 WrapperNode [2023-09-01 11:24:14,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:24:14,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:24:14,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:24:14,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:24:14,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:14,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:14,986 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-09-01 11:24:14,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:24:14,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:24:14,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:24:14,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:24:14,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:14,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:24:15,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:24:15,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:24:15,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:24:15,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (1/1) ... [2023-09-01 11:24:15,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:24:15,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:24:15,057 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) [2023-09-01 11:24:15,083 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 [2023-09-01 11:24:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:24:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:24:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:24:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:24:15,110 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:24:15,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:24:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:24:15,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:24:15,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:24:15,112 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 11:24:15,256 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:24:15,258 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:24:15,355 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:24:15,360 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:24:15,364 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 11:24:15,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:24:15 BoogieIcfgContainer [2023-09-01 11:24:15,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:24:15,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:24:15,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:24:15,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:24:15,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:24:14" (1/3) ... [2023-09-01 11:24:15,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744ef8a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:24:15, skipping insertion in model container [2023-09-01 11:24:15,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:24:14" (2/3) ... [2023-09-01 11:24:15,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@744ef8a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:24:15, skipping insertion in model container [2023-09-01 11:24:15,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:24:15" (3/3) ... [2023-09-01 11:24:15,374 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_41-threadenter-no-locals_unknown_1_pos.i [2023-09-01 11:24:15,382 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:24:15,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:24:15,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 11:24:15,390 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:24:15,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 11:24:15,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 81 flow [2023-09-01 11:24:15,536 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-09-01 11:24:15,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:24:15,539 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. [2023-09-01 11:24:15,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 81 flow [2023-09-01 11:24:15,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 32 transitions, 67 flow [2023-09-01 11:24:15,546 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:24:15,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 32 transitions, 67 flow [2023-09-01 11:24:15,563 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 36 places, 32 transitions, 67 flow [2023-09-01 11:24:15,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 32 transitions, 67 flow [2023-09-01 11:24:15,587 INFO L130 PetriNetUnfolder]: 0/32 cut-off events. [2023-09-01 11:24:15,587 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:24:15,587 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. [2023-09-01 11:24:15,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 140 [2023-09-01 11:24:16,693 INFO L134 LiptonReduction]: Checked pairs total: 88 [2023-09-01 11:24:16,693 INFO L136 LiptonReduction]: Total number of compositions: 28 [2023-09-01 11:24:16,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 11:24:16,728 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;@4e0048b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:24:16,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-09-01 11:24:16,731 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-09-01 11:24:16,731 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:24:16,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:24:16,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 11:24:16,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-01 11:24:16,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:24:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 153046, now seen corresponding path program 1 times [2023-09-01 11:24:16,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:24:16,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598617115] [2023-09-01 11:24:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:24:16,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:24:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:24:16,880 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:24:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:24:16,927 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:24:16,929 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:24:16,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-09-01 11:24:16,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-09-01 11:24:16,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-09-01 11:24:16,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:24:16,935 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:24:16,945 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 11:24:16,945 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 11:24:16,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 11:24:16 BasicIcfg [2023-09-01 11:24:16,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 11:24:16,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 11:24:16,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 11:24:16,963 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 11:24:16,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:24:15" (3/4) ... [2023-09-01 11:24:16,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-09-01 11:24:17,010 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 11:24:17,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 11:24:17,011 INFO L158 Benchmark]: Toolchain (without parser) took 2538.03ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 37.7MB in the beginning and 41.5MB in the end (delta: -3.8MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2023-09-01 11:24:17,011 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:24:17,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.55ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 32.8MB in the end (delta: 4.5MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2023-09-01 11:24:17,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 31.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 11:24:17,012 INFO L158 Benchmark]: Boogie Preprocessor took 39.64ms. Allocated memory is still 60.8MB. Free memory was 31.0MB in the beginning and 29.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 11:24:17,014 INFO L158 Benchmark]: RCFGBuilder took 337.81ms. Allocated memory is still 60.8MB. Free memory was 29.6MB in the beginning and 32.8MB in the end (delta: -3.1MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-09-01 11:24:17,014 INFO L158 Benchmark]: TraceAbstraction took 1595.01ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.1MB in the beginning and 43.5MB in the end (delta: -11.5MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. [2023-09-01 11:24:17,014 INFO L158 Benchmark]: Witness Printer took 47.06ms. Allocated memory is still 73.4MB. Free memory was 43.5MB in the beginning and 41.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 11:24:17,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 50.3MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.55ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 32.8MB in the end (delta: 4.5MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 31.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.64ms. Allocated memory is still 60.8MB. Free memory was 31.0MB in the beginning and 29.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 337.81ms. Allocated memory is still 60.8MB. Free memory was 29.6MB in the beginning and 32.8MB in the end (delta: -3.1MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1595.01ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.1MB in the beginning and 43.5MB in the end (delta: -11.5MB). Peak memory consumption was 1.3MB. Max. memory is 16.1GB. * Witness Printer took 47.06ms. Allocated memory is still 73.4MB. Free memory was 43.5MB in the beginning and 41.5MB 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: 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: 1.5s, 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! [2023-09-01 11:24:17,043 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