./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d175b23e7b65a104262a874bc9fb10ae6a765c43 ...................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d175b23e7b65a104262a874bc9fb10ae6a765c43 ............................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 19:10:01,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:10:01,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:10:01,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:10:01,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:10:01,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:10:01,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:10:01,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:10:01,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:10:01,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:10:01,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:10:01,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:10:01,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:10:01,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:10:01,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:10:01,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:10:01,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:10:01,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:10:01,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:10:01,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:10:01,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:10:01,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:10:01,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:10:01,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:10:01,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:10:01,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:10:01,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:10:01,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:10:01,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:10:01,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:10:01,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:10:01,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:10:01,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:10:01,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:10:01,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:10:01,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:10:01,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:10:01,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:10:01,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:10:01,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:10:01,291 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:10:01,292 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:10:01,302 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:10:01,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:10:01,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:10:01,303 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:10:01,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:10:01,304 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:10:01,304 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:10:01,304 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:10:01,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:10:01,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:10:01,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:10:01,305 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:10:01,305 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:10:01,305 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:10:01,305 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:10:01,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:10:01,306 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:10:01,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:10:01,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:10:01,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:10:01,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:10:01,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:10:01,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:10:01,307 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:10:01,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:10:01,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:10:01,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:10:01,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:10:01,309 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan 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(__VERIFIER_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 -> d175b23e7b65a104262a874bc9fb10ae6a765c43 [2019-12-07 19:10:01,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:10:01,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:10:01,420 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:10:01,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:10:01,421 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:10:01,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2019-12-07 19:10:01,459 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/942b10b0e/9157c806c08047f491f8566a0fb122f2/FLAG425dd050b [2019-12-07 19:10:01,934 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:10:01,934 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2019-12-07 19:10:01,938 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/942b10b0e/9157c806c08047f491f8566a0fb122f2/FLAG425dd050b [2019-12-07 19:10:01,948 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/942b10b0e/9157c806c08047f491f8566a0fb122f2 [2019-12-07 19:10:01,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:10:01,952 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:10:01,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:10:01,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:10:01,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:10:01,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:10:01" (1/1) ... [2019-12-07 19:10:01,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d378070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:01, skipping insertion in model container [2019-12-07 19:10:01,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:10:01" (1/1) ... [2019-12-07 19:10:01,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:10:01,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:10:02,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:10:02,132 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2019-12-07 19:10:02,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78e7efd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:02, skipping insertion in model container [2019-12-07 19:10:02,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:10:02,133 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 19:10:02,136 INFO L168 Benchmark]: Toolchain (without parser) took 183.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -142.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:02,136 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:10:02,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -142.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:02,138 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -142.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 21]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 19:10:03,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:10:03,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:10:03,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:10:03,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:10:03,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:10:03,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:10:03,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:10:03,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:10:03,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:10:03,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:10:03,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:10:03,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:10:03,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:10:03,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:10:03,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:10:03,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:10:03,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:10:03,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:10:03,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:10:03,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:10:03,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:10:03,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:10:03,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:10:03,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:10:03,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:10:03,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:10:03,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:10:03,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:10:03,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:10:03,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:10:03,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:10:03,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:10:03,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:10:03,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:10:03,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:10:03,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:10:03,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:10:03,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:10:03,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:10:03,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:10:03,313 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 19:10:03,323 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:10:03,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:10:03,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:10:03,324 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:10:03,324 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:10:03,325 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:10:03,325 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:10:03,325 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:10:03,325 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:10:03,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:10:03,326 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:10:03,327 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 19:10:03,327 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 19:10:03,327 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:10:03,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:10:03,327 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:10:03,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:10:03,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:10:03,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 19:10:03,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:10:03,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:10:03,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:10:03,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:10:03,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:10:03,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:10:03,329 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 19:10:03,329 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 19:10:03,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:10:03,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:10:03,329 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:10:03,329 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan 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(__VERIFIER_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 -> d175b23e7b65a104262a874bc9fb10ae6a765c43 [2019-12-07 19:10:03,489 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:10:03,498 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:10:03,500 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:10:03,501 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:10:03,501 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:10:03,501 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2019-12-07 19:10:03,541 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/85dea8522/515810b918214d9294b1a0005f82406f/FLAGfded2cd03 [2019-12-07 19:10:03,873 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:10:03,874 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2019-12-07 19:10:03,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/85dea8522/515810b918214d9294b1a0005f82406f/FLAGfded2cd03 [2019-12-07 19:10:03,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/data/85dea8522/515810b918214d9294b1a0005f82406f [2019-12-07 19:10:03,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:10:03,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:10:03,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:10:03,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:10:03,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:10:03,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:10:03" (1/1) ... [2019-12-07 19:10:03,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cebc80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:03, skipping insertion in model container [2019-12-07 19:10:03,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:10:03" (1/1) ... [2019-12-07 19:10:03,900 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:10:03,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:10:04,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:10:04,037 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 19:10:04,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:10:04,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:10:04,050 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:10:04,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:10:04,075 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:10:04,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04 WrapperNode [2019-12-07 19:10:04,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:10:04,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:10:04,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:10:04,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:10:04,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:10:04,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:10:04,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:10:04,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:10:04,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... [2019-12-07 19:10:04,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:10:04,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:10:04,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:10:04,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:10:04,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/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 [2019-12-07 19:10:04,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 19:10:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-12-07 19:10:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-12-07 19:10:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2019-12-07 19:10:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2019-12-07 19:10:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-12-07 19:10:04,210 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-12-07 19:10:04,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 19:10:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 19:10:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 19:10:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:10:04,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:10:04,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 19:10:04,398 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:10:04,398 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 19:10:04,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:10:04 BoogieIcfgContainer [2019-12-07 19:10:04,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:10:04,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:10:04,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:10:04,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:10:04,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:10:03" (1/3) ... [2019-12-07 19:10:04,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ddb978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:10:04, skipping insertion in model container [2019-12-07 19:10:04,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:10:04" (2/3) ... [2019-12-07 19:10:04,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ddb978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:10:04, skipping insertion in model container [2019-12-07 19:10:04,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:10:04" (3/3) ... [2019-12-07 19:10:04,404 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2019-12-07 19:10:04,410 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:10:04,416 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:10:04,425 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:10:04,440 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:10:04,441 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:10:04,441 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:10:04,441 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:10:04,441 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:10:04,441 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:10:04,441 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:10:04,441 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:10:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2019-12-07 19:10:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 19:10:04,457 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:10:04,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:10:04,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:10:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:10:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash -891537794, now seen corresponding path program 1 times [2019-12-07 19:10:04,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:10:04,470 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047516429] [2019-12-07 19:10:04,470 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 19:10:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:10:04,531 INFO L264 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2019-12-07 19:10:04,536 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:10:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:10:04,615 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:10:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:10:04,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047516429] [2019-12-07 19:10:04,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:10:04,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-12-07 19:10:04,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904600130] [2019-12-07 19:10:04,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 19:10:04,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:10:04,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 19:10:04,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 19:10:04,676 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 7 states. [2019-12-07 19:10:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:10:04,762 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2019-12-07 19:10:04,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 19:10:04,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-12-07 19:10:04,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:10:04,770 INFO L225 Difference]: With dead ends: 73 [2019-12-07 19:10:04,770 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 19:10:04,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:10:04,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 19:10:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 19:10:04,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 19:10:04,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2019-12-07 19:10:04,800 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 18 [2019-12-07 19:10:04,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:10:04,800 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2019-12-07 19:10:04,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 19:10:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2019-12-07 19:10:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 19:10:04,802 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:10:04,802 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:10:05,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 19:10:05,004 INFO L410 AbstractCegarLoop]: === Iteration 2 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:10:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:10:05,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1509693249, now seen corresponding path program 1 times [2019-12-07 19:10:05,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:10:05,008 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000411988] [2019-12-07 19:10:05,008 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 19:10:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:10:05,168 INFO L264 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 19:10:05,170 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:10:05,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 19:10:05,211 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:10:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 19:10:05,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000411988] [2019-12-07 19:10:05,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:10:05,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2019-12-07 19:10:05,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498514459] [2019-12-07 19:10:05,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 19:10:05,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 19:10:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 19:10:05,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-12-07 19:10:05,285 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 9 states. [2019-12-07 19:10:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:10:05,399 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2019-12-07 19:10:05,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 19:10:05,400 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2019-12-07 19:10:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:10:05,401 INFO L225 Difference]: With dead ends: 47 [2019-12-07 19:10:05,402 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 19:10:05,402 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-12-07 19:10:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 19:10:05,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 19:10:05,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 19:10:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2019-12-07 19:10:05,409 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 28 [2019-12-07 19:10:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:10:05,409 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2019-12-07 19:10:05,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 19:10:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2019-12-07 19:10:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-12-07 19:10:05,411 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:10:05,411 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:10:05,612 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 19:10:05,613 INFO L410 AbstractCegarLoop]: === Iteration 3 === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:10:05,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:10:05,614 INFO L82 PathProgramCache]: Analyzing trace with hash -896236761, now seen corresponding path program 1 times [2019-12-07 19:10:05,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 19:10:05,616 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693913392] [2019-12-07 19:10:05,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 19:10:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:10:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 19:10:05,858 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 19:10:05,858 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 19:10:06,058 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 19:10:06,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:10:06 BoogieIcfgContainer [2019-12-07 19:10:06,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:10:06,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:10:06,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:10:06,122 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:10:06,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:10:04" (3/4) ... [2019-12-07 19:10:06,124 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 19:10:06,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_550a44a3-680f-4125-b19c-0a4b8507a032/bin/utaipan/witness.graphml [2019-12-07 19:10:06,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:10:06,165 INFO L168 Benchmark]: Toolchain (without parser) took 2275.66 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 953.7 MB in the beginning and 927.1 MB in the end (delta: 26.7 MB). Peak memory consumption was 137.8 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:06,165 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:10:06,166 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.43 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 936.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:06,166 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -161.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:06,166 INFO L168 Benchmark]: Boogie Preprocessor took 19.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:10:06,167 INFO L168 Benchmark]: RCFGBuilder took 230.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:06,167 INFO L168 Benchmark]: TraceAbstraction took 1721.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 927.1 MB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:10:06,167 INFO L168 Benchmark]: Witness Printer took 42.16 ms. Allocated memory is still 1.1 GB. Free memory is still 927.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:10:06,169 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.43 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 936.3 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 73.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.1 MB). Free memory was 936.3 MB in the beginning and 1.1 GB in the end (delta: -161.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 230.70 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1721.66 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 927.1 MB in the end (delta: 150.0 MB). Peak memory consumption was 150.0 MB. Max. memory is 11.5 GB. * Witness Printer took 42.16 ms. Allocated memory is still 1.1 GB. Free memory is still 927.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L58] CALL nondet_tree() [L18] COND FALSE !(__VERIFIER_nondet_bool()) [L21] struct node *n = (struct node *)malloc(sizeof(struct node)); [L22] n->data = __VERIFIER_nondet_int() [L23] CALL, EXPR nondet_tree() [L18] COND TRUE __VERIFIER_nondet_bool() [L19] return 0; VAL [\result={0:0}] [L23] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={1:0}, n={1:0}, nondet_tree()={0:0}] [L23] n->left = nondet_tree() [L24] CALL, EXPR nondet_tree() [L18] COND TRUE __VERIFIER_nondet_bool() [L19] return 0; VAL [\result={0:0}] [L24] RET, EXPR nondet_tree() VAL [malloc(sizeof(struct node))={1:0}, n={1:0}, nondet_tree()={0:0}] [L24] n->right = nondet_tree() [L25] return n; VAL [\result={1:0}, malloc(sizeof(struct node))={1:0}, n={1:0}] [L58] RET nondet_tree() [L53] CALL, EXPR max(n) VAL [n={1:0}] [L30] COND FALSE !(!n) [L33] EXPR n->left VAL [n={1:0}, n={1:0}, n->left={0:0}] [L33] CALL, EXPR max(n->left) VAL [n={0:0}] [L30] COND TRUE !n [L31] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L33] RET, EXPR max(n->left) VAL [max(n->left)=-2147483648, n={1:0}, n={1:0}, n->left={0:0}] [L33] int a = max(n->left); [L34] EXPR n->right VAL [a=2147483648, n={1:0}, n={1:0}, n->right={0:0}] [L34] CALL, EXPR max(n->right) VAL [n={0:0}] [L30] COND TRUE !n [L31] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L34] RET, EXPR max(n->right) VAL [a=2147483648, max(n->right)=-2147483648, n={1:0}, n={1:0}, n->right={0:0}] [L34] int b = max(n->right); [L35] COND TRUE a >= b [L35] return a; VAL [\result=-2147483648, a=2147483648, b=2147483648, n={1:0}, n={1:0}] [L53] RET, EXPR max(n) [L53] int a = max(n); [L54] CALL check(n, a) [L41] COND TRUE \read(*n) [L42] n->data [L9] COND TRUE !cond [L9] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 24 SDslu, 427 SDs, 0 SdLazy, 103 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 5423 SizeOfPredicates, 13 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...