./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8 --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 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:33,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:33,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:33,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:33,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:33,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:33,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:33,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:33,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:33,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:33,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:33,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:33,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:33,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:33,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:33,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:33,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:33,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:33,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:33,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:33,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:33,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:33,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:33,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:33,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:33,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:33,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:33,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:33,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:33,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:33,440 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:33,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:33,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:33,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:33,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:33,446 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:33,447 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:33,447 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:33,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:33,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:33,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:33,450 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:25:33,493 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:33,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:33,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:33,495 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:33,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:33,496 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:33,496 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:25:33,497 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:33,497 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:33,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:25:33,504 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:25:33,505 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:33,505 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:25:33,505 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:25:33,506 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:25:33,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:33,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:25:33,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:25:33,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:25:33,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:33,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:33,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:33,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:33,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:33,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:25:33,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:33,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:33,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:33,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:33,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:33,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:33,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:33,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:33,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:33,514 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:25:33,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:25:33,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:33,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:33,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:33,516 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_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f [2021-11-07 01:25:33,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:33,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:33,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:33,889 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:33,890 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:33,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-11-07 01:25:33,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/db68a88a7/7197a414773b4258b7c72e4db60a4446/FLAG71011ddc4 [2021-11-07 01:25:34,469 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:34,469 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-11-07 01:25:34,491 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/db68a88a7/7197a414773b4258b7c72e4db60a4446/FLAG71011ddc4 [2021-11-07 01:25:34,826 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/db68a88a7/7197a414773b4258b7c72e4db60a4446 [2021-11-07 01:25:34,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:34,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:34,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:34,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:34,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:34,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:34" (1/1) ... [2021-11-07 01:25:34,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbba051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:34, skipping insertion in model container [2021-11-07 01:25:34,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:34" (1/1) ... [2021-11-07 01:25:34,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:34,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:35,072 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-11-07 01:25:35,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:35,116 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) [2021-11-07 01:25:35,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@25f9a946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:35, skipping insertion in model container [2021-11-07 01:25:35,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:35,118 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:25:35,121 INFO L168 Benchmark]: Toolchain (without parser) took 286.94 ms. Allocated memory is still 96.5 MB. Free memory was 61.7 MB in the beginning and 72.9 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:35,122 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 66.5 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:35,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.51 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 72.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:35,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 96.5 MB. Free memory was 66.5 MB in the beginning and 66.5 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.51 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 72.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 23]: 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/tree_max_incorrect.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8 --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 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:37,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:37,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:37,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:37,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:37,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:37,328 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:37,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:37,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:37,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:37,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:37,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:37,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:37,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:37,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:37,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:37,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:37,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:37,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:37,373 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:37,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:37,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:37,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:37,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:37,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:37,390 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:37,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:37,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:37,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:37,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:37,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:37,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:37,397 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:37,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:37,400 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:37,400 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:37,401 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:37,401 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:37,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:37,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:37,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:37,409 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:25:37,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:37,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:37,451 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:37,451 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:37,451 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:37,451 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:37,451 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:37,452 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:37,452 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:37,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:37,454 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:25:37,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:25:37,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:37,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:37,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:37,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:37,455 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:37,455 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:25:37,456 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:25:37,456 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:25:37,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:37,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:37,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:37,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:37,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:25:37,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:37,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:37,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:37,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:37,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:37,458 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:25:37,458 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:25:37,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:37,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:37,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:37,459 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f9d3bc4199d475d16a98f98af89b165bc24fe0a085f06600e60f95805b0186f [2021-11-07 01:25:37,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:37,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:37,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:37,869 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:37,870 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:37,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-11-07 01:25:37,944 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/070b57aa1/b3273eeaa8b943198de57c22bc47d563/FLAGda91ffe23 [2021-11-07 01:25:38,513 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:38,513 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/sv-benchmarks/c/verifythis/tree_max_incorrect.c [2021-11-07 01:25:38,520 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/070b57aa1/b3273eeaa8b943198de57c22bc47d563/FLAGda91ffe23 [2021-11-07 01:25:38,874 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/data/070b57aa1/b3273eeaa8b943198de57c22bc47d563 [2021-11-07 01:25:38,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:38,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:38,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:38,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:38,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:38,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:38" (1/1) ... [2021-11-07 01:25:38,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ef6e48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:38, skipping insertion in model container [2021-11-07 01:25:38,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:38" (1/1) ... [2021-11-07 01:25:38,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:38,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:39,104 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-11-07 01:25:39,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:39,196 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:25:39,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:39,203 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-11-07 01:25:39,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:39,234 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:25:39,245 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/sv-benchmarks/c/verifythis/tree_max_incorrect.c[466,479] [2021-11-07 01:25:39,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:39,267 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:25:39,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39 WrapperNode [2021-11-07 01:25:39,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:39,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:39,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:25:39,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:25:39,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:39,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:25:39,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:25:39,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:25:39,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:25:39,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:25:39,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:25:39,343 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:25:39,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (1/1) ... [2021-11-07 01:25:39,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:39,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:39,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:25:39,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:25:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:25:39,428 INFO L130 BoogieDeclarations]: Found specification of procedure max [2021-11-07 01:25:39,428 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2021-11-07 01:25:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2021-11-07 01:25:39,429 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2021-11-07 01:25:39,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:25:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-11-07 01:25:39,430 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2021-11-07 01:25:39,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:25:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:25:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:25:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:25:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:25:39,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:25:39,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 01:25:39,761 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:25:39,761 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 01:25:39,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:39 BoogieIcfgContainer [2021-11-07 01:25:39,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:25:39,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:25:39,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:25:39,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:25:39,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:38" (1/3) ... [2021-11-07 01:25:39,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b38877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:39, skipping insertion in model container [2021-11-07 01:25:39,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:39" (2/3) ... [2021-11-07 01:25:39,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b38877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:39, skipping insertion in model container [2021-11-07 01:25:39,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:39" (3/3) ... [2021-11-07 01:25:39,771 INFO L111 eAbstractionObserver]: Analyzing ICFG tree_max_incorrect.c [2021-11-07 01:25:39,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:25:39,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:25:39,821 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:25:39,828 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 [2021-11-07 01:25:39,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:25:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-07 01:25:39,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:25:39,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:39,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:39,851 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash -891537794, now seen corresponding path program 1 times [2021-11-07 01:25:39,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:39,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891008784] [2021-11-07 01:25:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:39,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:39,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:39,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:39,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:25:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:25:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:40,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:40,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:40,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891008784] [2021-11-07 01:25:40,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891008784] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:40,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:40,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:25:40,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681900682] [2021-11-07 01:25:40,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:25:40,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:25:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:25:40,698 INFO L87 Difference]: Start difference. First operand has 40 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 01:25:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:40,857 INFO L93 Difference]: Finished difference Result 73 states and 96 transitions. [2021-11-07 01:25:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:25:40,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-07 01:25:40,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:40,868 INFO L225 Difference]: With dead ends: 73 [2021-11-07 01:25:40,868 INFO L226 Difference]: Without dead ends: 34 [2021-11-07 01:25:40,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-07 01:25:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-07 01:25:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 24 states have internal predecessors, (26), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-07 01:25:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2021-11-07 01:25:40,941 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 18 [2021-11-07 01:25:40,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:40,942 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2021-11-07 01:25:40,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-07 01:25:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2021-11-07 01:25:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-07 01:25:40,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:40,947 INFO L513 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] [2021-11-07 01:25:40,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:41,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:41,158 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:41,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:41,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1509693249, now seen corresponding path program 1 times [2021-11-07 01:25:41,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:41,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366793094] [2021-11-07 01:25:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:41,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:41,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:41,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:25:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:41,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:25:41,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:41,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:25:41,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:25:41,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:25:41,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366793094] [2021-11-07 01:25:41,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366793094] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:41,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:41,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-07 01:25:41,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752353800] [2021-11-07 01:25:41,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:25:41,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:25:41,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:25:41,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:25:41,667 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 01:25:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:41,828 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-11-07 01:25:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:25:41,829 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2021-11-07 01:25:41,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:41,831 INFO L225 Difference]: With dead ends: 47 [2021-11-07 01:25:41,831 INFO L226 Difference]: Without dead ends: 36 [2021-11-07 01:25:41,832 INFO L786 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 [2021-11-07 01:25:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-07 01:25:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-07 01:25:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 26 states have internal predecessors, (27), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2021-11-07 01:25:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-11-07 01:25:41,852 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 28 [2021-11-07 01:25:41,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:41,853 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-07 01:25:41,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 01:25:41,853 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-11-07 01:25:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:25:41,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:41,857 INFO L513 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] [2021-11-07 01:25:41,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:42,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:42,069 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting checkErr0ASSERT_VIOLATIONERROR_FUNCTION === [checkErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:42,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash -896236761, now seen corresponding path program 1 times [2021-11-07 01:25:42,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:25:42,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645354574] [2021-11-07 01:25:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:42,071 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:25:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:25:42,078 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:25:42,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:25:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:25:42,240 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:25:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:25:42,382 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:25:42,382 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:25:42,383 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location checkErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:25:42,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:42,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:25:42,596 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:25:42,599 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:25:42,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:25:42 BoogieIcfgContainer [2021-11-07 01:25:42,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:25:42,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:25:42,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:25:42,675 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:25:42,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:39" (3/4) ... [2021-11-07 01:25:42,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:25:42,762 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:25:42,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:25:42,764 INFO L168 Benchmark]: Toolchain (without parser) took 3885.45 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 36.4 MB in the beginning and 47.2 MB in the end (delta: -10.8 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:42,765 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:42,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.91 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 39.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:42,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 38.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:42,767 INFO L168 Benchmark]: Boogie Preprocessor took 37.26 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 36.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:42,767 INFO L168 Benchmark]: RCFGBuilder took 421.10 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 39.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:42,768 INFO L168 Benchmark]: TraceAbstraction took 2909.29 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 38.6 MB in the beginning and 50.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:42,769 INFO L168 Benchmark]: Witness Printer took 87.86 ms. Allocated memory is still 81.8 MB. Free memory was 50.9 MB in the beginning and 47.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:42,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 58.7 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 388.91 ms. Allocated memory is still 58.7 MB. Free memory was 36.2 MB in the beginning and 39.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.65 ms. Allocated memory is still 58.7 MB. Free memory was 39.6 MB in the beginning and 38.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.26 ms. Allocated memory is still 58.7 MB. Free memory was 38.0 MB in the beginning and 36.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 421.10 ms. Allocated memory is still 58.7 MB. Free memory was 36.6 MB in the beginning and 39.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2909.29 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 38.6 MB in the beginning and 50.9 MB in the end (delta: -12.3 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 87.86 ms. Allocated memory is still 81.8 MB. Free memory was 50.9 MB in the beginning and 47.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L60] CALL nondet_tree() [L20] COND FALSE !(__VERIFIER_nondet_bool()) [L23] struct node *n = (struct node *)malloc(sizeof(struct node)); [L24] n->data = __VERIFIER_nondet_int() [L25] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L25] RET, EXPR nondet_tree() VAL [n={1:0}, nondet_tree()={0:0}] [L25] n->left = nondet_tree() [L26] CALL, EXPR nondet_tree() [L20] COND TRUE __VERIFIER_nondet_bool() [L21] return 0; VAL [\result={0:0}] [L26] RET, EXPR nondet_tree() VAL [n={1:0}, nondet_tree()={0:0}] [L26] n->right = nondet_tree() [L27] return n; VAL [\result={1:0}, n={1:0}] [L60] RET nondet_tree() [L55] CALL, EXPR max(n) VAL [n={1:0}] [L32] COND FALSE !(!n) [L35] EXPR n->left VAL [n={1:0}, n={1:0}, n->left={0:0}] [L35] CALL, EXPR max(n->left) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L35] RET, EXPR max(n->left) VAL [max(n->left)=-2147483648, n={1:0}, n={1:0}, n->left={0:0}] [L35] int a = max(n->left); [L36] EXPR n->right VAL [a=2147483648, n={1:0}, n={1:0}, n->right={0:0}] [L36] CALL, EXPR max(n->right) VAL [n={0:0}] [L32] COND TRUE !n [L33] return -2147483648; VAL [\result=-2147483648, n={0:0}, n={0:0}] [L36] RET, EXPR max(n->right) VAL [a=2147483648, max(n->right)=-2147483648, n={1:0}, n={1:0}, n->right={0:0}] [L36] int b = max(n->right); [L37] COND TRUE a >= b [L37] return a; VAL [\result=-2147483648, a=2147483648, b=2147483648, n={1:0}, n={1:0}] [L55] RET, EXPR max(n) [L55] int a = max(n); [L56] CALL check(n, a) [L43] COND TRUE \read(*n) [L44] n->data [L11] COND TRUE !cond [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 32 SDslu, 375 SDs, 0 SdLazy, 89 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 1.0s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 10 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 21 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:25:42,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16a6a721-a10a-4f68-871a-5492d8b15161/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE