./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/nsqmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8 --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 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:07:47,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:07:47,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:07:47,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:07:47,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:07:47,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:07:47,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:07:47,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:07:47,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:07:47,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:07:47,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:07:47,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:07:47,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:07:47,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:07:47,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:07:47,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:07:47,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:07:47,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:07:47,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:07:47,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:07:47,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:07:47,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:07:47,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:07:47,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:07:47,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:07:47,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:07:47,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:07:47,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:07:47,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:07:47,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:07:47,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:07:47,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:07:47,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:07:47,639 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:07:47,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:07:47,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:07:47,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:07:47,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:07:47,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:07:47,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:07:47,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:07:47,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:07:47,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:07:47,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:07:47,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:07:47,703 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:07:47,704 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:07:47,704 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:07:47,704 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:07:47,704 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:07:47,704 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:07:47,704 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:07:47,706 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:07:47,706 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:07:47,706 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:07:47,706 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:07:47,707 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:07:47,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:07:47,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:07:47,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:07:47,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:07:47,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:07:47,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:07:47,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:07:47,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:07:47,709 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:07:47,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:07:47,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:07:47,709 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:07:47,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:07:47,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:07:47,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:07:47,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:47,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:07:47,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:07:47,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:07:47,711 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:07:47,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:07:47,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:07:47,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:07:47,712 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:07:47,712 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_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39aacadb1ef8d9484ed01fea6a4b942ae6d8d46b70aa8d3c1aaf631adea16a64 [2021-11-07 01:07:48,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:07:48,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:07:48,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:07:48,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:07:48,043 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:07:48,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/array-fpi/nsqmf.c [2021-11-07 01:07:48,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/data/5dddec4eb/76ef30285b38480db1ebb50d1032dc33/FLAG88d23829f [2021-11-07 01:07:48,538 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:07:48,538 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/sv-benchmarks/c/array-fpi/nsqmf.c [2021-11-07 01:07:48,544 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/data/5dddec4eb/76ef30285b38480db1ebb50d1032dc33/FLAG88d23829f [2021-11-07 01:07:48,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/data/5dddec4eb/76ef30285b38480db1ebb50d1032dc33 [2021-11-07 01:07:48,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:07:48,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:07:48,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:48,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:07:48,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:07:48,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@113095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:48, skipping insertion in model container [2021-11-07 01:07:48,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:07:48" (1/1) ... [2021-11-07 01:07:48,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:07:48,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:07:49,146 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_45e15467-6357-484b-9c8d-a6bc767657a1/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2021-11-07 01:07:49,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:49,183 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:07:49,205 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_45e15467-6357-484b-9c8d-a6bc767657a1/sv-benchmarks/c/array-fpi/nsqmf.c[588,601] [2021-11-07 01:07:49,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:07:49,252 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:07:49,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49 WrapperNode [2021-11-07 01:07:49,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:07:49,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:49,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:07:49,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:07:49,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:07:49,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:07:49,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:07:49,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:07:49,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,329 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,349 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,351 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:07:49,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:07:49,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:07:49,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:07:49,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (1/1) ... [2021-11-07 01:07:49,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:07:49,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:49,391 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:07:49,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:07:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:07:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:07:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 01:07:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:07:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:07:49,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:07:49,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:07:49,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:07:49,835 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:07:49,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:49 BoogieIcfgContainer [2021-11-07 01:07:49,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:07:49,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:07:49,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:07:49,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:07:49,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:07:48" (1/3) ... [2021-11-07 01:07:49,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7f4ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:49, skipping insertion in model container [2021-11-07 01:07:49,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:07:49" (2/3) ... [2021-11-07 01:07:49,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7f4ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:07:49, skipping insertion in model container [2021-11-07 01:07:49,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:49" (3/3) ... [2021-11-07 01:07:49,853 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2021-11-07 01:07:49,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:07:49,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:07:49,912 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:07:49,919 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 [2021-11-07 01:07:49,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:07:49,933 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) [2021-11-07 01:07:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:07:49,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:49,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:07:49,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:07:49,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:49,948 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2021-11-07 01:07:49,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:49,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796710653] [2021-11-07 01:07:49,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:49,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:50,064 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:07:50,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250783014] [2021-11-07 01:07:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:50,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:50,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:50,078 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:50,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:07:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:07:50,151 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:07:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:07:50,213 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:07:50,216 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:07:50,217 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:07:50,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:50,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-07 01:07:50,453 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:07:50,455 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:07:50,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:07:50 BoogieIcfgContainer [2021-11-07 01:07:50,480 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:07:50,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:07:50,481 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:07:50,481 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:07:50,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:07:49" (3/4) ... [2021-11-07 01:07:50,484 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:07:50,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45e15467-6357-484b-9c8d-a6bc767657a1/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:07:50,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:07:50,521 INFO L168 Benchmark]: Toolchain (without parser) took 1571.19 ms. Allocated memory is still 107.0 MB. Free memory was 68.8 MB in the beginning and 45.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:50,522 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 107.0 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:50,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.77 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 81.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:50,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.93 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:07:50,524 INFO L168 Benchmark]: Boogie Preprocessor took 37.33 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:50,525 INFO L168 Benchmark]: RCFGBuilder took 486.32 ms. Allocated memory is still 107.0 MB. Free memory was 78.3 MB in the beginning and 64.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:50,527 INFO L168 Benchmark]: TraceAbstraction took 640.59 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 47.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:50,533 INFO L168 Benchmark]: Witness Printer took 38.84 ms. Allocated memory is still 107.0 MB. Free memory was 47.3 MB in the beginning and 45.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:07:50,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 107.0 MB. Free memory is still 85.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.77 ms. Allocated memory is still 107.0 MB. Free memory was 68.5 MB in the beginning and 81.3 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.93 ms. Allocated memory is still 107.0 MB. Free memory was 81.3 MB in the beginning and 79.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.33 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 486.32 ms. Allocated memory is still 107.0 MB. Free memory was 78.3 MB in the beginning and 64.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 640.59 ms. Allocated memory is still 107.0 MB. Free memory was 64.1 MB in the beginning and 47.3 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 38.84 ms. Allocated memory is still 107.0 MB. Free memory was 47.3 MB in the beginning and 45.2 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