./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition02.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_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/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_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/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_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/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 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 ..................................................................................................................................................................................................................................................................................................................................................... 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 05:34:41,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:34:41,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:34:41,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:34:41,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:34:41,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:34:41,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:34:41,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:34:41,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:34:41,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:34:41,304 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:34:41,305 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:34:41,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:34:41,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:34:41,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:34:41,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:34:41,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:34:41,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:34:41,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:34:41,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:34:41,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:34:41,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:34:41,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:34:41,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:34:41,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:34:41,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:34:41,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:34:41,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:34:41,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:34:41,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:34:41,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:34:41,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:34:41,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:34:41,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:34:41,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:34:41,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:34:41,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:34:41,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:34:41,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:34:41,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:34:41,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:34:41,346 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:34:41,388 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:34:41,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:34:41,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:34:41,389 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:34:41,389 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:34:41,390 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:34:41,390 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:34:41,390 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:34:41,390 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:34:41,390 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:34:41,390 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:34:41,391 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:34:41,391 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:34:41,391 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:34:41,391 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:34:41,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:34:41,392 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:34:41,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:34:41,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:34:41,394 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:34:41,394 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:34:41,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:34:41,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:34:41,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:34:41,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:34:41,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:34:41,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:34:41,395 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:34:41,395 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:34:41,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:34:41,396 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:34:41,396 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:34:41,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:34:41,396 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_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12b38fa2e3d5fdbfa2e75fd7db8c6635c3a88ba468adc8c100051dd60d30a551 [2021-10-29 05:34:41,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:34:41,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:34:41,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:34:41,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:34:41,808 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:34:41,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/recursive/Addition02.c [2021-10-29 05:34:41,881 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/data/9bcc2a9ba/39ab8f39fcba462fa5f2a6d1aafb8582/FLAG8cd1c10d7 [2021-10-29 05:34:42,337 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:34:42,337 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/sv-benchmarks/c/recursive/Addition02.c [2021-10-29 05:34:42,344 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/data/9bcc2a9ba/39ab8f39fcba462fa5f2a6d1aafb8582/FLAG8cd1c10d7 [2021-10-29 05:34:42,726 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/data/9bcc2a9ba/39ab8f39fcba462fa5f2a6d1aafb8582 [2021-10-29 05:34:42,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:34:42,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:34:42,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:34:42,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:34:42,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:34:42,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:42,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5818b906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42, skipping insertion in model container [2021-10-29 05:34:42,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:42,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:34:42,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:34:42,931 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_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-10-29 05:34:42,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:34:42,945 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:34:42,961 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_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/sv-benchmarks/c/recursive/Addition02.c[1124,1137] [2021-10-29 05:34:42,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:34:42,976 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:34:42,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42 WrapperNode [2021-10-29 05:34:42,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:34:42,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:34:42,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:34:42,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:34:42,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:42,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:34:43,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:34:43,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:34:43,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:34:43,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:34:43,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:34:43,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:34:43,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:34:43,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (1/1) ... [2021-10-29 05:34:43,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:34:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:34:43,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:34:43,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:34:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:34:43,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:34:43,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:34:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:34:43,132 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-10-29 05:34:43,132 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-10-29 05:34:43,371 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:34:43,372 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 05:34:43,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:43 BoogieIcfgContainer [2021-10-29 05:34:43,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:34:43,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:34:43,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:34:43,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:34:43,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:34:42" (1/3) ... [2021-10-29 05:34:43,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9817f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:34:43, skipping insertion in model container [2021-10-29 05:34:43,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:34:42" (2/3) ... [2021-10-29 05:34:43,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9817f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:34:43, skipping insertion in model container [2021-10-29 05:34:43,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:43" (3/3) ... [2021-10-29 05:34:43,384 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition02.c [2021-10-29 05:34:43,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:34:43,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:34:43,437 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:34:43,444 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 05:34:43,444 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:34:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-29 05:34:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:34:43,466 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:34:43,467 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:34:43,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:34:43,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:34:43,473 INFO L85 PathProgramCache]: Analyzing trace with hash 731430453, now seen corresponding path program 1 times [2021-10-29 05:34:43,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:34:43,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106553159] [2021-10-29 05:34:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:34:43,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:34:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:34:43,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:34:43,925 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:34:43,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106553159] [2021-10-29 05:34:43,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106553159] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:34:43,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:34:43,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-29 05:34:43,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336869132] [2021-10-29 05:34:43,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:34:43,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:34:43,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:34:43,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:34:43,969 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:34:44,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:34:44,197 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-10-29 05:34:44,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:34:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-10-29 05:34:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:34:44,208 INFO L225 Difference]: With dead ends: 30 [2021-10-29 05:34:44,208 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:34:44,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:34:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:34:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-29 05:34:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-29 05:34:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-10-29 05:34:44,261 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2021-10-29 05:34:44,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:34:44,262 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-10-29 05:34:44,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:34:44,262 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-10-29 05:34:44,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:34:44,264 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:34:44,265 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:34:44,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:34:44,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:34:44,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:34:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1703056242, now seen corresponding path program 1 times [2021-10-29 05:34:44,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:34:44,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050489461] [2021-10-29 05:34:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:34:44,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:34:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:34:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:34:44,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:34:44,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050489461] [2021-10-29 05:34:44,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050489461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:34:44,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:34:44,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:34:44,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734823039] [2021-10-29 05:34:44,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:34:44,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:34:44,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:34:44,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:34:44,327 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:34:44,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:34:44,370 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2021-10-29 05:34:44,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:34:44,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-10-29 05:34:44,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:34:44,374 INFO L225 Difference]: With dead ends: 30 [2021-10-29 05:34:44,374 INFO L226 Difference]: Without dead ends: 22 [2021-10-29 05:34:44,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:34:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-29 05:34:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-10-29 05:34:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-29 05:34:44,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-29 05:34:44,391 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2021-10-29 05:34:44,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:34:44,391 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-29 05:34:44,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-10-29 05:34:44,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-29 05:34:44,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:34:44,394 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:34:44,395 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:34:44,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:34:44,398 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:34:44,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:34:44,409 INFO L85 PathProgramCache]: Analyzing trace with hash 280210265, now seen corresponding path program 1 times [2021-10-29 05:34:44,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:34:44,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322208022] [2021-10-29 05:34:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:34:44,410 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:34:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:34:44,450 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:34:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:34:44,522 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:34:44,522 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:34:44,523 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:34:44,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:34:44,529 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:34:44,533 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:34:44,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:34:44 BoogieIcfgContainer [2021-10-29 05:34:44,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:34:44,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:34:44,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:34:44,566 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:34:44,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:34:43" (3/4) ... [2021-10-29 05:34:44,569 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:34:44,615 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:34:44,616 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:34:44,618 INFO L168 Benchmark]: Toolchain (without parser) took 1887.03 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 65.6 MB in the beginning and 91.3 MB in the end (delta: -25.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:34:44,618 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 81.5 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:34:44,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 80.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:34:44,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.88 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:34:44,621 INFO L168 Benchmark]: Boogie Preprocessor took 23.16 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 78.0 MB in the end (delta: 915.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:34:44,621 INFO L168 Benchmark]: RCFGBuilder took 332.00 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 67.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:34:44,622 INFO L168 Benchmark]: TraceAbstraction took 1188.95 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 66.7 MB in the beginning and 93.4 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:34:44,623 INFO L168 Benchmark]: Witness Printer took 50.13 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 91.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:34:44,627 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 104.9 MB. Free memory was 81.6 MB in the beginning and 81.5 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.98 ms. Allocated memory is still 104.9 MB. Free memory was 65.5 MB in the beginning and 80.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.88 ms. Allocated memory is still 104.9 MB. Free memory was 80.1 MB in the beginning and 78.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.16 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 78.0 MB in the end (delta: 915.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 332.00 ms. Allocated memory is still 104.9 MB. Free memory was 78.0 MB in the beginning and 67.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1188.95 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 66.7 MB in the beginning and 93.4 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 50.13 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 91.3 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: 45]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L29] int m = __VERIFIER_nondet_int(); [L30] COND FALSE !(m < 0 || m > 1073741823) [L35] int n = __VERIFIER_nondet_int(); [L36] COND FALSE !(n < 0 || n > 1073741823) [L41] CALL, EXPR addition(m,n) VAL [\old(m)=0, \old(n)=1] [L16] COND FALSE !(n == 0) VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L19] COND TRUE n > 0 VAL [\old(m)=0, \old(n)=1, m=0, n=1] [L20] CALL, EXPR addition(m+1, n-1) VAL [\old(m)=1, \old(n)=0] [L16] COND TRUE n == 0 [L17] return m; VAL [\old(m)=1, \old(n)=0, \result=1, m=1, n=0] [L20] RET, EXPR addition(m+1, n-1) VAL [\old(m)=0, \old(n)=1, addition(m+1, n-1)=1, m=0, n=1] [L20] return addition(m+1, n-1); [L41] RET, EXPR addition(m,n) [L41] int result = addition(m,n); [L42] COND FALSE !(result == m - n) [L45] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 27 SDslu, 53 SDs, 0 SdLazy, 96 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-10-29 05:34:44,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_44d9b0e5-c5b1-4ac6-a31b-6d7c31702d10/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...