./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ss2f.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ss2f.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI --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 140b2ee674786865605f3bb0db5e22e6fcce8eed .................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 02:26:05,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:05,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:05,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:05,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:05,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:05,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:05,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:05,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:05,407 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:05,408 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:05,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:05,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:05,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:05,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:05,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:05,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:05,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:05,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:05,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:05,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:05,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:05,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:05,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:05,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:05,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:05,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:05,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:05,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:05,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:05,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:05,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:05,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:05,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:05,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:05,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:05,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:05,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:05,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:05,455 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:05,456 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:05,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:05,509 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:05,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:05,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:05,512 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:05,512 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:05,512 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:05,512 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:05,513 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:05,513 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:05,513 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:05,514 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:05,514 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:05,515 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:05,515 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:05,515 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:05,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:05,516 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:05,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:05,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:05,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:05,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:05,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:05,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:05,518 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:05,518 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:05,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:05,519 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:05,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:05,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:05,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:05,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:05,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:05,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:05,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:05,521 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:05,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:05,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:05,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:05,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:05,522 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_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 140b2ee674786865605f3bb0db5e22e6fcce8eed [2021-10-11 02:26:05,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:05,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:05,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:05,858 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:05,859 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:05,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/array-fpi/ss2f.c [2021-10-11 02:26:05,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/data/191e76111/ce46e28f9e9f4160b325a2f2484ca749/FLAG8866d2bc5 [2021-10-11 02:26:06,433 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:06,434 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/sv-benchmarks/c/array-fpi/ss2f.c [2021-10-11 02:26:06,441 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/data/191e76111/ce46e28f9e9f4160b325a2f2484ca749/FLAG8866d2bc5 [2021-10-11 02:26:06,814 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/data/191e76111/ce46e28f9e9f4160b325a2f2484ca749 [2021-10-11 02:26:06,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:06,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:06,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:06,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:06,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:06,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:06" (1/1) ... [2021-10-11 02:26:06,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21525609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:06, skipping insertion in model container [2021-10-11 02:26:06,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:06" (1/1) ... [2021-10-11 02:26:06,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:06,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:07,064 WARN L226 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_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/sv-benchmarks/c/array-fpi/ss2f.c[587,600] [2021-10-11 02:26:07,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:07,099 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:07,112 WARN L226 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_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/sv-benchmarks/c/array-fpi/ss2f.c[587,600] [2021-10-11 02:26:07,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:07,139 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:07,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07 WrapperNode [2021-10-11 02:26:07,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:07,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:07,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:07,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:07,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:07,183 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:07,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:07,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:07,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... [2021-10-11 02:26:07,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:07,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:07,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:07,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:07,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:07,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:26:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-11 02:26:07,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:07,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:26:07,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:26:08,084 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:08,084 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-11 02:26:08,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:08 BoogieIcfgContainer [2021-10-11 02:26:08,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:08,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:08,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:08,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:08,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:06" (1/3) ... [2021-10-11 02:26:08,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb6f5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:08, skipping insertion in model container [2021-10-11 02:26:08,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:07" (2/3) ... [2021-10-11 02:26:08,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb6f5c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:08, skipping insertion in model container [2021-10-11 02:26:08,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:08" (3/3) ... [2021-10-11 02:26:08,095 INFO L111 eAbstractionObserver]: Analyzing ICFG ss2f.c [2021-10-11 02:26:08,109 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:08,112 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:26:08,122 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:26:08,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:08,156 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:08,156 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:08,156 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:08,156 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:08,156 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:08,156 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:08,157 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:08,166 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-10-11 02:26:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 02:26:08,170 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:08,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:08,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:08,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:08,176 INFO L82 PathProgramCache]: Analyzing trace with hash -309316035, now seen corresponding path program 1 times [2021-10-11 02:26:08,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:08,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649146897] [2021-10-11 02:26:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:26:08,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649146897] [2021-10-11 02:26:08,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:08,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:26:08,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761184228] [2021-10-11 02:26:08,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:26:08,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:08,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:26:08,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:08,449 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2021-10-11 02:26:08,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:08,517 INFO L93 Difference]: Finished difference Result 28 states and 43 transitions. [2021-10-11 02:26:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:26:08,520 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-10-11 02:26:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:08,537 INFO L225 Difference]: With dead ends: 28 [2021-10-11 02:26:08,537 INFO L226 Difference]: Without dead ends: 14 [2021-10-11 02:26:08,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:26:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-11 02:26:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-11 02:26:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-11 02:26:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2021-10-11 02:26:08,579 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 20 transitions. Word has length 11 [2021-10-11 02:26:08,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:08,579 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 20 transitions. [2021-10-11 02:26:08,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:26:08,579 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 20 transitions. [2021-10-11 02:26:08,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:08,602 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:08,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:08,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:08,603 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1374721369, now seen corresponding path program 1 times [2021-10-11 02:26:08,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:08,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438417058] [2021-10-11 02:26:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:26:08,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438417058] [2021-10-11 02:26:08,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:08,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:08,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59137154] [2021-10-11 02:26:08,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:26:08,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:08,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:26:08,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:26:08,711 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. Second operand 4 states. [2021-10-11 02:26:08,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:08,802 INFO L93 Difference]: Finished difference Result 33 states and 48 transitions. [2021-10-11 02:26:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:26:08,803 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2021-10-11 02:26:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:08,805 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:26:08,805 INFO L226 Difference]: Without dead ends: 24 [2021-10-11 02:26:08,807 INFO L677 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 [2021-10-11 02:26:08,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-11 02:26:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-10-11 02:26:08,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:26:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-10-11 02:26:08,818 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 12 [2021-10-11 02:26:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:08,819 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-10-11 02:26:08,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:26:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-10-11 02:26:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:26:08,820 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:08,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:08,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:26:08,822 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:08,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1951812552, now seen corresponding path program 1 times [2021-10-11 02:26:08,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:08,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063348886] [2021-10-11 02:26:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:08,880 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:26:08,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835911557] [2021-10-11 02:26:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:09,004 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:09,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:09,130 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:26:09,131 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:26:09,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-11 02:26:09,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:09 BoogieIcfgContainer [2021-10-11 02:26:09,394 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:09,395 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:09,395 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:09,395 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:09,398 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:08" (3/4) ... [2021-10-11 02:26:09,400 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:26:09,470 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7cbcfae-a44a-4628-aa4f-0536e8a22a88/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:09,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:09,478 INFO L168 Benchmark]: Toolchain (without parser) took 2659.10 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.4 MB in the beginning and 80.4 MB in the end (delta: -30.0 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,479 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 86.0 MB. Free memory was 66.5 MB in the beginning and 66.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:09,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.31 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.2 MB in the beginning and 80.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:09,480 INFO L168 Benchmark]: Boogie Preprocessor took 32.61 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 77.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,481 INFO L168 Benchmark]: RCFGBuilder took 870.75 ms. Allocated memory is still 104.9 MB. Free memory was 77.5 MB in the beginning and 73.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,481 INFO L168 Benchmark]: TraceAbstraction took 1305.49 ms. Allocated memory is still 104.9 MB. Free memory was 73.4 MB in the beginning and 50.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,482 INFO L168 Benchmark]: Witness Printer took 81.65 ms. Allocated memory is still 104.9 MB. Free memory was 50.0 MB in the beginning and 80.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:09,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 86.0 MB. Free memory was 66.5 MB in the beginning and 66.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 320.31 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 50.2 MB in the beginning and 80.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.44 ms. Allocated memory is still 104.9 MB. Free memory was 80.6 MB in the beginning and 79.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.61 ms. Allocated memory is still 104.9 MB. Free memory was 79.1 MB in the beginning and 77.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 870.75 ms. Allocated memory is still 104.9 MB. Free memory was 77.5 MB in the beginning and 73.8 MB in the end (delta: 3.7 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1305.49 ms. Allocated memory is still 104.9 MB. Free memory was 73.4 MB in the beginning and 50.0 MB in the end (delta: 23.4 MB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. * Witness Printer took 81.65 ms. Allocated memory is still 104.9 MB. Free memory was 50.0 MB in the beginning and 80.4 MB in the end (delta: -30.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 sum[1]; [L29] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1] [L32] COND TRUE i