./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/nsqmf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 ............................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 04:35:18,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:35:18,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:35:18,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:35:18,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:35:18,541 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:35:18,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:35:18,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:35:18,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:35:18,562 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:35:18,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:35:18,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:35:18,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:35:18,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:35:18,573 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:35:18,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:35:18,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:35:18,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:35:18,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:35:18,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:35:18,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:35:18,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:35:18,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:35:18,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:35:18,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:35:18,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:35:18,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:35:18,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:35:18,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:35:18,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:35:18,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:35:18,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:35:18,638 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:35:18,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:35:18,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:35:18,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:35:18,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:35:18,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:35:18,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:35:18,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:35:18,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:35:18,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:35:18,708 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:35:18,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:35:18,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:35:18,712 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:35:18,712 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:35:18,713 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:35:18,713 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:35:18,713 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:35:18,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:35:18,714 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:35:18,715 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:35:18,715 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:35:18,716 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:35:18,716 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:35:18,716 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:35:18,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:35:18,718 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:35:18,718 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:35:18,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:35:18,718 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:35:18,719 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:35:18,719 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:35:18,719 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:35:18,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:35:18,720 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:35:18,720 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:35:18,720 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:35:18,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:35:18,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:35:18,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:35:18,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:35:18,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:35:18,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:35:18,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:35:18,725 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:35:18,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:35:18,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:35:18,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:35:18,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:35:18,726 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 [2021-10-29 04:35:19,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:35:19,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:35:19,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:35:19,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:35:19,148 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:35:19,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/array-fpi/nsqmf.c [2021-10-29 04:35:19,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/data/1eb5baa03/78f1507737264e988e55962f5d9b8b3d/FLAGa8a04555b [2021-10-29 04:35:19,789 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:35:19,792 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/sv-benchmarks/c/array-fpi/nsqmf.c [2021-10-29 04:35:19,806 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/data/1eb5baa03/78f1507737264e988e55962f5d9b8b3d/FLAGa8a04555b [2021-10-29 04:35:20,125 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/data/1eb5baa03/78f1507737264e988e55962f5d9b8b3d [2021-10-29 04:35:20,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:35:20,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:35:20,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:35:20,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:35:20,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:35:20,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e45b9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20, skipping insertion in model container [2021-10-29 04:35:20,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:35:20,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:35:20,354 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2021-10-29 04:35:20,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:35:20,400 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:35:20,419 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2021-10-29 04:35:20,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:35:20,471 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:35:20,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20 WrapperNode [2021-10-29 04:35:20,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:35:20,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:35:20,474 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:35:20,474 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:35:20,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:35:20,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:35:20,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:35:20,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:35:20,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:35:20,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:35:20,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:35:20,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:35:20,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (1/1) ... [2021-10-29 04:35:20,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:35:20,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:20,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:35:20,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:35:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:35:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:35:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:35:20,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:35:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:35:20,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:35:20,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:35:21,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:35:21,205 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-29 04:35:21,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:35:21 BoogieIcfgContainer [2021-10-29 04:35:21,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:35:21,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:35:21,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:35:21,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:35:21,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:35:20" (1/3) ... [2021-10-29 04:35:21,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312717d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:35:21, skipping insertion in model container [2021-10-29 04:35:21,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:35:20" (2/3) ... [2021-10-29 04:35:21,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312717d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:35:21, skipping insertion in model container [2021-10-29 04:35:21,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:35:21" (3/3) ... [2021-10-29 04:35:21,219 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2021-10-29 04:35:21,226 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:35:21,226 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:35:21,293 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:35:21,309 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 04:35:21,309 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:35:21,330 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 04:35:21,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:35:21,348 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:35:21,349 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:35:21,350 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:35:21,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:35:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2021-10-29 04:35:21,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:35:21,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190866214] [2021-10-29 04:35:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:21,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:35:21,564 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:35:21,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [322662839] [2021-10-29 04:35:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:35:21,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:35:21,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:35:21,572 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:35:21,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:35:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:35:21,687 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:35:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:35:21,763 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:35:21,779 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:35:21,781 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:35:21,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:35:21,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-29 04:35:22,000 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 04:35:22,004 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:35:22,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:35:22 BoogieIcfgContainer [2021-10-29 04:35:22,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:35:22,035 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:35:22,035 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:35:22,035 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:35:22,036 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:35:21" (3/4) ... [2021-10-29 04:35:22,039 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:35:22,108 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e1718a3-9a6f-4939-a8b4-01f130d6cc94/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:35:22,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:35:22,112 INFO L168 Benchmark]: Toolchain (without parser) took 1980.83 ms. Allocated memory is still 125.8 MB. Free memory was 88.4 MB in the beginning and 62.5 MB in the end (delta: 26.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,113 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 96.1 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:35:22,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.57 ms. Allocated memory is still 125.8 MB. Free memory was 88.2 MB in the beginning and 98.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,114 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.98 ms. Allocated memory is still 125.8 MB. Free memory was 98.8 MB in the beginning and 97.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,115 INFO L168 Benchmark]: Boogie Preprocessor took 63.95 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,116 INFO L168 Benchmark]: RCFGBuilder took 591.23 ms. Allocated memory is still 125.8 MB. Free memory was 96.0 MB in the beginning and 82.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,117 INFO L168 Benchmark]: TraceAbstraction took 823.16 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 64.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,118 INFO L168 Benchmark]: Witness Printer took 74.47 ms. Allocated memory is still 125.8 MB. Free memory was 64.6 MB in the beginning and 62.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 04:35:22,123 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 96.1 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 341.57 ms. Allocated memory is still 125.8 MB. Free memory was 88.2 MB in the beginning and 98.8 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.98 ms. Allocated memory is still 125.8 MB. Free memory was 98.8 MB in the beginning and 97.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.95 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 591.23 ms. Allocated memory is still 125.8 MB. Free memory was 96.0 MB in the beginning and 82.0 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 823.16 ms. Allocated memory is still 125.8 MB. Free memory was 81.3 MB in the beginning and 64.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 74.47 ms. Allocated memory is still 125.8 MB. Free memory was 64.6 MB in the beginning and 62.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L13] COND FALSE !(!cond) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 1 [L32] a[0] = 1 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i