./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sqmf.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_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/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_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sqmf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/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_47603b07-0a44-4a24-8a72-d97c24f9337a/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 24888a06200d8a603c9d35acbb4d9d45bc573dc668676385643552e5524aa211 ............................................................................................................................................................................................................................................................................. 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 04:57:13,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 04:57:13,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 04:57:13,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 04:57:13,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 04:57:13,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 04:57:13,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 04:57:13,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 04:57:13,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 04:57:13,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 04:57:13,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 04:57:13,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 04:57:13,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 04:57:13,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 04:57:13,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 04:57:13,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 04:57:13,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 04:57:13,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 04:57:13,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 04:57:13,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 04:57:13,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 04:57:13,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 04:57:13,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 04:57:13,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 04:57:13,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 04:57:13,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 04:57:13,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 04:57:13,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 04:57:13,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 04:57:13,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 04:57:13,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 04:57:13,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 04:57:13,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 04:57:13,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 04:57:13,416 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 04:57:13,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 04:57:13,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 04:57:13,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 04:57:13,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 04:57:13,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 04:57:13,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 04:57:13,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 04:57:13,447 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 04:57:13,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 04:57:13,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 04:57:13,448 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 04:57:13,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 04:57:13,449 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 04:57:13,449 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 04:57:13,449 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 04:57:13,449 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 04:57:13,450 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 04:57:13,450 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 04:57:13,450 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 04:57:13,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 04:57:13,451 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 04:57:13,451 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 04:57:13,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 04:57:13,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 04:57:13,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 04:57:13,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 04:57:13,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 04:57:13,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 04:57:13,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 04:57:13,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 04:57:13,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 04:57:13,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 04:57:13,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 04:57:13,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 04:57:13,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 04:57:13,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 04:57:13,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 04:57:13,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:13,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 04:57:13,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 04:57:13,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 04:57:13,456 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 04:57:13,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 04:57:13,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 04:57:13,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 04:57:13,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 04:57:13,457 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_47603b07-0a44-4a24-8a72-d97c24f9337a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24888a06200d8a603c9d35acbb4d9d45bc573dc668676385643552e5524aa211 [2021-10-29 04:57:13,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 04:57:13,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 04:57:13,861 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 04:57:13,862 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 04:57:13,863 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 04:57:13,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/array-fpi/sqmf.c [2021-10-29 04:57:13,939 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/data/27f12aa9a/8ce94f39e3ae4cd49fdc0bdd347f10b0/FLAG4c4e15f5d [2021-10-29 04:57:14,484 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 04:57:14,484 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/sv-benchmarks/c/array-fpi/sqmf.c [2021-10-29 04:57:14,497 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/data/27f12aa9a/8ce94f39e3ae4cd49fdc0bdd347f10b0/FLAG4c4e15f5d [2021-10-29 04:57:14,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/data/27f12aa9a/8ce94f39e3ae4cd49fdc0bdd347f10b0 [2021-10-29 04:57:14,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 04:57:14,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 04:57:14,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:14,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 04:57:14,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 04:57:14,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:14" (1/1) ... [2021-10-29 04:57:14,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adf0517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:14, skipping insertion in model container [2021-10-29 04:57:14,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:57:14" (1/1) ... [2021-10-29 04:57:14,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 04:57:14,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 04:57:15,021 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_47603b07-0a44-4a24-8a72-d97c24f9337a/sv-benchmarks/c/array-fpi/sqmf.c[587,600] [2021-10-29 04:57:15,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:15,051 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 04:57:15,063 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_47603b07-0a44-4a24-8a72-d97c24f9337a/sv-benchmarks/c/array-fpi/sqmf.c[587,600] [2021-10-29 04:57:15,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 04:57:15,098 INFO L208 MainTranslator]: Completed translation [2021-10-29 04:57:15,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15 WrapperNode [2021-10-29 04:57:15,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 04:57:15,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:15,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 04:57:15,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 04:57:15,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 04:57:15,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 04:57:15,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 04:57:15,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 04:57:15,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 04:57:15,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 04:57:15,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 04:57:15,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 04:57:15,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (1/1) ... [2021-10-29 04:57:15,179 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 04:57:15,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:15,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 04:57:15,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 04:57:15,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 04:57:15,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 04:57:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 04:57:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 04:57:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 04:57:15,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 04:57:15,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 04:57:15,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 04:57:15,725 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-29 04:57:15,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:15 BoogieIcfgContainer [2021-10-29 04:57:15,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 04:57:15,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 04:57:15,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 04:57:15,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 04:57:15,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:57:14" (1/3) ... [2021-10-29 04:57:15,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688cebbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:15, skipping insertion in model container [2021-10-29 04:57:15,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:57:15" (2/3) ... [2021-10-29 04:57:15,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688cebbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:57:15, skipping insertion in model container [2021-10-29 04:57:15,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:15" (3/3) ... [2021-10-29 04:57:15,736 INFO L111 eAbstractionObserver]: Analyzing ICFG sqmf.c [2021-10-29 04:57:15,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 04:57:15,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 04:57:15,814 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 04:57:15,820 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 04:57:15,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 04:57:15,834 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 04:57:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 04:57:15,838 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 04:57:15,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 04:57:15,840 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 04:57:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 04:57:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash -735732333, now seen corresponding path program 1 times [2021-10-29 04:57:15,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 04:57:15,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678141303] [2021-10-29 04:57:15,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:15,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 04:57:16,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 04:57:16,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245994547] [2021-10-29 04:57:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 04:57:16,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 04:57:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 04:57:16,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 04:57:16,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 04:57:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:57:16,110 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 04:57:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 04:57:16,152 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 04:57:16,154 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 04:57:16,155 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 04:57:16,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 04:57:16,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-29 04:57:16,386 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 04:57:16,389 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 04:57:16,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 04:57:16 BoogieIcfgContainer [2021-10-29 04:57:16,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 04:57:16,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 04:57:16,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 04:57:16,420 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 04:57:16,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:57:15" (3/4) ... [2021-10-29 04:57:16,423 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 04:57:16,525 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47603b07-0a44-4a24-8a72-d97c24f9337a/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 04:57:16,527 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 04:57:16,529 INFO L168 Benchmark]: Toolchain (without parser) took 1694.55 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 58.7 MB in the beginning and 95.2 MB in the end (delta: -36.5 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:16,530 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 74.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:16,531 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.30 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 58.5 MB in the beginning and 98.0 MB in the end (delta: -39.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:16,532 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.80 ms. Allocated memory is still 119.5 MB. Free memory was 98.0 MB in the beginning and 96.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:16,532 INFO L168 Benchmark]: Boogie Preprocessor took 25.28 ms. Allocated memory is still 119.5 MB. Free memory was 97.9 MB in the beginning and 97.2 MB in the end (delta: 752.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 04:57:16,533 INFO L168 Benchmark]: RCFGBuilder took 557.04 ms. Allocated memory is still 119.5 MB. Free memory was 97.2 MB in the beginning and 82.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:16,534 INFO L168 Benchmark]: TraceAbstraction took 688.08 ms. Allocated memory is still 119.5 MB. Free memory was 81.9 MB in the beginning and 64.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:16,534 INFO L168 Benchmark]: Witness Printer took 107.56 ms. Allocated memory is still 119.5 MB. Free memory was 64.4 MB in the beginning and 95.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 04:57:16,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 96.5 MB. Free memory is still 74.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.30 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 58.5 MB in the beginning and 98.0 MB in the end (delta: -39.5 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.80 ms. Allocated memory is still 119.5 MB. Free memory was 98.0 MB in the beginning and 96.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.28 ms. Allocated memory is still 119.5 MB. Free memory was 97.9 MB in the beginning and 97.2 MB in the end (delta: 752.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 557.04 ms. Allocated memory is still 119.5 MB. Free memory was 97.2 MB in the beginning and 82.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 688.08 ms. Allocated memory is still 119.5 MB. Free memory was 81.9 MB in the beginning and 64.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 107.56 ms. Allocated memory is still 119.5 MB. Free memory was 64.4 MB in the beginning and 95.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 4.2 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] = 0 [L32] a[0] = 0 [L34] i=1 VAL [N=1] [L34] COND FALSE !(i