./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ncompf.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/ncompf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P --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 9828ae97bd89bb8bc9e03b825846d0b3720f0cca297df36eda8ff823667b1534 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:49:45,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:49:45,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:49:45,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:49:45,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:49:45,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:49:45,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:49:45,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:49:46,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:49:46,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:49:46,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:49:46,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:49:46,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:49:46,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:49:46,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:49:46,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:49:46,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:49:46,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:49:46,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:49:46,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:49:46,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:49:46,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:49:46,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:49:46,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:49:46,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:49:46,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:49:46,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:49:46,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:49:46,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:49:46,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:49:46,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:49:46,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:49:46,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:49:46,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:49:46,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:49:46,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:49:46,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:49:46,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:49:46,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:49:46,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:49:46,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:49:46,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 22:49:46,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:49:46,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:49:46,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:49:46,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:49:46,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:49:46,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:49:46,126 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:49:46,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:49:46,126 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:49:46,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:49:46,128 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:49:46,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:49:46,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:49:46,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:49:46,128 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:49:46,129 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:49:46,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:49:46,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:49:46,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:49:46,130 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:49:46,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:49:46,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:49:46,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:49:46,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:49:46,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:49:46,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:49:46,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:49:46,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:49:46,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:49:46,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:49:46,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:49:46,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:49:46,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:49:46,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:49:46,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:49:46,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:49:46,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:49:46,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:49:46,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:49:46,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:49:46,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:49:46,138 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_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9828ae97bd89bb8bc9e03b825846d0b3720f0cca297df36eda8ff823667b1534 [2021-11-20 22:49:46,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:49:46,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:49:46,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:49:46,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:49:46,534 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:49:46,536 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/array-fpi/ncompf.c [2021-11-20 22:49:46,608 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/data/e1163c91c/45a60d8a180b4ba897afed8421af14f0/FLAG3a29aff56 [2021-11-20 22:49:47,102 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:49:47,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/sv-benchmarks/c/array-fpi/ncompf.c [2021-11-20 22:49:47,110 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/data/e1163c91c/45a60d8a180b4ba897afed8421af14f0/FLAG3a29aff56 [2021-11-20 22:49:47,463 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/data/e1163c91c/45a60d8a180b4ba897afed8421af14f0 [2021-11-20 22:49:47,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:49:47,472 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:49:47,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:49:47,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:49:47,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:49:47,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2026eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47, skipping insertion in model container [2021-11-20 22:49:47,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:49:47,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:49:47,704 WARN L230 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_f2f079bc-cd00-4255-a801-1c39d3a96732/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2021-11-20 22:49:47,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:49:47,753 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:49:47,771 WARN L230 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_f2f079bc-cd00-4255-a801-1c39d3a96732/sv-benchmarks/c/array-fpi/ncompf.c[589,602] [2021-11-20 22:49:47,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:49:47,824 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:49:47,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47 WrapperNode [2021-11-20 22:49:47,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:49:47,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:49:47,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:49:47,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:49:47,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,857 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,895 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2021-11-20 22:49:47,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:49:47,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:49:47,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:49:47,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:49:47,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:49:47,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:49:47,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:49:47,953 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:49:47,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (1/1) ... [2021-11-20 22:49:47,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:49:47,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:49:47,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:49:48,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:49:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:49:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:49:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 22:49:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 22:49:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:49:48,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:49:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 22:49:48,145 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:49:48,147 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:49:48,315 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:49:48,362 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:49:48,362 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-20 22:49:48,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:48 BoogieIcfgContainer [2021-11-20 22:49:48,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:49:48,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:49:48,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:49:48,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:49:48,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:47" (1/3) ... [2021-11-20 22:49:48,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340d230c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:48, skipping insertion in model container [2021-11-20 22:49:48,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:47" (2/3) ... [2021-11-20 22:49:48,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340d230c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:48, skipping insertion in model container [2021-11-20 22:49:48,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:48" (3/3) ... [2021-11-20 22:49:48,377 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2021-11-20 22:49:48,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:49:48,384 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 22:49:48,479 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:49:48,488 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 22:49:48,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 22:49:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 22:49:48,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 22:49:48,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:48,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:48,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 22:49:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1654620546, now seen corresponding path program 1 times [2021-11-20 22:49:48,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:48,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246994931] [2021-11-20 22:49:48,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:48,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:48,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 22:49:48,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923576673] [2021-11-20 22:49:48,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:48,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:49:48,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:49:48,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:49:48,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:49:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 22:49:48,769 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 22:49:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 22:49:48,849 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 22:49:48,852 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 22:49:48,854 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 22:49:48,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:49:49,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 22:49:49,078 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-20 22:49:49,082 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 22:49:49,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:49:49 BoogieIcfgContainer [2021-11-20 22:49:49,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 22:49:49,112 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 22:49:49,112 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 22:49:49,112 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 22:49:49,113 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:48" (3/4) ... [2021-11-20 22:49:49,115 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 22:49:49,163 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f2f079bc-cd00-4255-a801-1c39d3a96732/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 22:49:49,163 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 22:49:49,164 INFO L158 Benchmark]: Toolchain (without parser) took 1691.97ms. Allocated memory is still 111.1MB. Free memory was 73.0MB in the beginning and 49.4MB in the end (delta: 23.5MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2021-11-20 22:49:49,165 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:49:49,166 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.73ms. Allocated memory is still 111.1MB. Free memory was 72.8MB in the beginning and 85.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 22:49:49,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.36ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 83.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:49:49,167 INFO L158 Benchmark]: Boogie Preprocessor took 55.02ms. Allocated memory is still 111.1MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 969.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:49:49,168 INFO L158 Benchmark]: RCFGBuilder took 413.03ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 69.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 22:49:49,169 INFO L158 Benchmark]: TraceAbstraction took 743.71ms. Allocated memory is still 111.1MB. Free memory was 68.3MB in the beginning and 51.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 22:49:49,169 INFO L158 Benchmark]: Witness Printer took 51.35ms. Allocated memory is still 111.1MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:49:49,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 111.1MB. Free memory is still 89.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.73ms. Allocated memory is still 111.1MB. Free memory was 72.8MB in the beginning and 85.1MB in the end (delta: -12.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.36ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 83.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.02ms. Allocated memory is still 111.1MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 969.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 413.03ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 69.0MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 743.71ms. Allocated memory is still 111.1MB. Free memory was 68.3MB in the beginning and 51.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 51.35ms. Allocated memory is still 111.1MB. Free memory was 51.5MB in the beginning and 49.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 VAL [a={-2:0}, b={-1:0}, c={-3:0}, i=1, N=1] [L35] COND FALSE !(i