./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 932f76685ed1816d93a388d0ab1addae9c51483a ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 932f76685ed1816d93a388d0ab1addae9c51483a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:35:12,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:35:12,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:35:12,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:35:12,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:35:12,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:35:12,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:35:12,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:35:12,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:35:12,452 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:35:12,453 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:35:12,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:35:12,454 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:35:12,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:35:12,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:35:12,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:35:12,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:35:12,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:35:12,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:35:12,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:35:12,463 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:35:12,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:35:12,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:35:12,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:35:12,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:35:12,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:35:12,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:35:12,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:35:12,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:35:12,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:35:12,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:35:12,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:35:12,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:35:12,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:35:12,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:35:12,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:35:12,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:35:12,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:35:12,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:35:12,476 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:35:12,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:35:12,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 06:35:12,493 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:35:12,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:35:12,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:35:12,494 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:35:12,494 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:35:12,494 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:35:12,494 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:35:12,494 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:35:12,494 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:35:12,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:35:12,495 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:35:12,495 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:35:12,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:35:12,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:35:12,495 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:35:12,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 06:35:12,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 06:35:12,496 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:35:12,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:35:12,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:35:12,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:35:12,498 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:35:12,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:35:12,498 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:35:12,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:35:12,498 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-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-09 06:35:12,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:35:12,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:35:12,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:35:12,701 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:35:12,702 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:35:12,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-09 06:35:12,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/69874a605/6bdb121694884de0b76f61d81ce99f43/FLAGcf5028f9a [2020-12-09 06:35:13,121 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:35:13,121 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-09 06:35:13,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/69874a605/6bdb121694884de0b76f61d81ce99f43/FLAGcf5028f9a [2020-12-09 06:35:13,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/69874a605/6bdb121694884de0b76f61d81ce99f43 [2020-12-09 06:35:13,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:35:13,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:35:13,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:35:13,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:35:13,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:35:13,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:13" (1/1) ... [2020-12-09 06:35:13,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d30494d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:13, skipping insertion in model container [2020-12-09 06:35:13,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:13" (1/1) ... [2020-12-09 06:35:13,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:35:13,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:35:13,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:35:13,288 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) [2020-12-09 06:35:13,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@334b9644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:13, skipping insertion in model container [2020-12-09 06:35:13,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:35:13,290 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 06:35:13,292 INFO L168 Benchmark]: Toolchain (without parser) took 151.91 ms. Allocated memory is still 98.6 MB. Free memory was 58.0 MB in the beginning and 76.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:13,293 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 98.6 MB. Free memory is still 74.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:35:13,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.63 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 76.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:13,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 98.6 MB. Free memory is still 74.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 149.63 ms. Allocated memory is still 98.6 MB. Free memory was 57.8 MB in the beginning and 76.3 MB in the end (delta: -18.5 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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 0.2.0-7b2dab5 [2020-12-09 06:35:14,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:35:14,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:35:14,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:35:14,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:35:14,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:35:14,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:35:14,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:35:14,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:35:14,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:35:14,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:35:14,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:35:14,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:35:14,646 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:35:14,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:35:14,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:35:14,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:35:14,650 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:35:14,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:35:14,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:35:14,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:35:14,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:35:14,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:35:14,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:35:14,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:35:14,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:35:14,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:35:14,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:35:14,662 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:35:14,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:35:14,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:35:14,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:35:14,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:35:14,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:35:14,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:35:14,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:35:14,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:35:14,666 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:35:14,666 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:35:14,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:35:14,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:35:14,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 06:35:14,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:35:14,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:35:14,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:35:14,687 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:35:14,687 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:35:14,687 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:35:14,687 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:35:14,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:35:14,687 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:35:14,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 06:35:14,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:35:14,688 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:35:14,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:35:14,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:35:14,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 06:35:14,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:35:14,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:35:14,691 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-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 932f76685ed1816d93a388d0ab1addae9c51483a [2020-12-09 06:35:14,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:35:14,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:35:14,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:35:14,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:35:14,970 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:35:14,971 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-09 06:35:15,014 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/5cdc3811b/dd2241e6cd3c45c9be7851ede53a3981/FLAGe7842cb79 [2020-12-09 06:35:15,399 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:35:15,400 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2020-12-09 06:35:15,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/5cdc3811b/dd2241e6cd3c45c9be7851ede53a3981/FLAGe7842cb79 [2020-12-09 06:35:15,415 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/data/5cdc3811b/dd2241e6cd3c45c9be7851ede53a3981 [2020-12-09 06:35:15,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:35:15,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:35:15,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:35:15,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:35:15,421 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:35:15,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42772553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15, skipping insertion in model container [2020-12-09 06:35:15,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:35:15,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:35:15,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:35:15,559 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 06:35:15,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:35:15,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:35:15,571 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:35:15,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:35:15,597 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:35:15,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15 WrapperNode [2020-12-09 06:35:15,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:35:15,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:35:15,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:35:15,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:35:15,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:35:15,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:35:15,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:35:15,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:35:15,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... [2020-12-09 06:35:15,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:35:15,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:35:15,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:35:15,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:35:15,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/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 [2020-12-09 06:35:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 06:35:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 06:35:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:35:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:35:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:35:15,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:35:15,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:35:15,881 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 06:35:15,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:15 BoogieIcfgContainer [2020-12-09 06:35:15,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:35:15,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:35:15,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:35:15,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:35:15,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:35:15" (1/3) ... [2020-12-09 06:35:15,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33abbb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:15, skipping insertion in model container [2020-12-09 06:35:15,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:15" (2/3) ... [2020-12-09 06:35:15,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33abbb70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:15, skipping insertion in model container [2020-12-09 06:35:15,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:15" (3/3) ... [2020-12-09 06:35:15,887 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2020-12-09 06:35:15,897 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:35:15,899 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-09 06:35:15,907 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-09 06:35:15,921 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:35:15,922 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 06:35:15,922 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:35:15,922 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:35:15,922 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:35:15,922 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:35:15,922 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:35:15,922 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:35:15,930 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 06:35:15,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:35:15,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:15,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:35:15,935 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:35:15,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:15,944 INFO L82 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2020-12-09 06:35:15,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:35:15,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911656991] [2020-12-09 06:35:15,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/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 [2020-12-09 06:35:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:15,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 06:35:16,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:16,052 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:35:16,053 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:35:16,058 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:16,059 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:35:16,059 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 06:35:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:16,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:35:16,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911656991] [2020-12-09 06:35:16,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:16,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:16,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134488587] [2020-12-09 06:35:16,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:16,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:35:16,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:16,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:16,084 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2020-12-09 06:35:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:16,117 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2020-12-09 06:35:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:16,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 06:35:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:16,124 INFO L225 Difference]: With dead ends: 12 [2020-12-09 06:35:16,124 INFO L226 Difference]: Without dead ends: 10 [2020-12-09 06:35:16,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:16,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-09 06:35:16,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-09 06:35:16,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-09 06:35:16,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-12-09 06:35:16,146 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2020-12-09 06:35:16,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:16,146 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-12-09 06:35:16,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:16,146 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-12-09 06:35:16,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 06:35:16,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:16,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 06:35:16,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 06:35:16,349 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:35:16,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:16,351 INFO L82 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2020-12-09 06:35:16,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:35:16,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241655584] [2020-12-09 06:35:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/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 [2020-12-09 06:35:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:16,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 06:35:16,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:16,528 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:35:16,529 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:35:16,539 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:16,541 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:35:16,541 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 06:35:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:16,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:35:16,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241655584] [2020-12-09 06:35:16,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:16,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:35:16,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417943875] [2020-12-09 06:35:16,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 06:35:16,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:35:16,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 06:35:16,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:16,567 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 3 states. [2020-12-09 06:35:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:16,599 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-12-09 06:35:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 06:35:16,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 06:35:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:16,601 INFO L225 Difference]: With dead ends: 16 [2020-12-09 06:35:16,601 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 06:35:16,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 06:35:16,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 06:35:16,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2020-12-09 06:35:16,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 06:35:16,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-12-09 06:35:16,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2020-12-09 06:35:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:16,605 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-12-09 06:35:16,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 06:35:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-12-09 06:35:16,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:35:16,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:16,606 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:35:16,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 06:35:16,807 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:35:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2020-12-09 06:35:16,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:35:16,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200051621] [2020-12-09 06:35:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/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 [2020-12-09 06:35:16,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:16,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:35:16,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:17,005 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:17,005 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2020-12-09 06:35:17,010 INFO L547 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-09 06:35:17,011 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:17,013 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-09 06:35:17,013 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:9 [2020-12-09 06:35:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:35:17,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200051621] [2020-12-09 06:35:17,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:35:17,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:35:17,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395788429] [2020-12-09 06:35:17,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:35:17,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:35:17,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:35:17,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:35:17,030 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 4 states. [2020-12-09 06:35:17,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:17,076 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2020-12-09 06:35:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:35:17,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 06:35:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:17,077 INFO L225 Difference]: With dead ends: 13 [2020-12-09 06:35:17,077 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 06:35:17,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:35:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 06:35:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 06:35:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 06:35:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-12-09 06:35:17,080 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2020-12-09 06:35:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:17,080 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-12-09 06:35:17,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:35:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-12-09 06:35:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 06:35:17,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:17,081 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-09 06:35:17,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 06:35:17,283 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:35:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:17,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1810603474, now seen corresponding path program 1 times [2020-12-09 06:35:17,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:35:17,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478621373] [2020-12-09 06:35:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 06:35:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:17,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:35:17,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:17,416 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:35:17,417 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:35:17,426 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:17,427 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:35:17,428 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 06:35:17,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:35:17,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478621373] [2020-12-09 06:35:17,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [873531617] [2020-12-09 06:35:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:35:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:17,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:35:17,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:17,707 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:35:17,707 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:35:17,713 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:17,714 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:35:17,714 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 06:35:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:35:17,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489388717] [2020-12-09 06:35:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:35:17,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:17,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 06:35:17,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:17,778 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-09 06:35:17,778 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 06:35:17,784 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:17,785 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 06:35:17,785 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2020-12-09 06:35:17,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:35:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:17,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 06:35:17,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 5 [2020-12-09 06:35:17,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466235920] [2020-12-09 06:35:17,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:35:17,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:35:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:35:17,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:35:17,807 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2020-12-09 06:35:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:17,868 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-12-09 06:35:17,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:35:17,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-12-09 06:35:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:17,869 INFO L225 Difference]: With dead ends: 22 [2020-12-09 06:35:17,869 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 06:35:17,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:35:17,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 06:35:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2020-12-09 06:35:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-09 06:35:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-12-09 06:35:17,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2020-12-09 06:35:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:17,873 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-12-09 06:35:17,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:35:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-12-09 06:35:17,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:35:17,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:17,874 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-12-09 06:35:18,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 06:35:18,476 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:35:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2020-12-09 06:35:18,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:35:18,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606334645] [2020-12-09 06:35:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 06:35:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 06:35:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:18,564 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:18,565 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 15 [2020-12-09 06:35:18,567 INFO L547 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-09 06:35:18,569 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 06:35:18,570 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-09 06:35:18,570 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2020-12-09 06:35:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:18,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 06:35:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:35:18,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606334645] [2020-12-09 06:35:18,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1587476345] [2020-12-09 06:35:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt [2020-12-09 06:35:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:35:18,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 06:35:18,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 06:35:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-09 06:35:18,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 06:35:18,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 06:35:18,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 10 [2020-12-09 06:35:18,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133267261] [2020-12-09 06:35:18,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:35:18,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 06:35:18,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:35:18,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:35:18,804 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2020-12-09 06:35:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:35:18,830 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-12-09 06:35:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:35:18,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 06:35:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:35:18,831 INFO L225 Difference]: With dead ends: 14 [2020-12-09 06:35:18,831 INFO L226 Difference]: Without dead ends: 11 [2020-12-09 06:35:18,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-09 06:35:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-09 06:35:18,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-09 06:35:18,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-09 06:35:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-12-09 06:35:18,834 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 10 [2020-12-09 06:35:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:35:18,834 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-12-09 06:35:18,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:35:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-12-09 06:35:18,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 06:35:18,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:35:18,835 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2020-12-09 06:35:19,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt,8 mathsat -unsat_core_generation=3 [2020-12-09 06:35:19,237 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 06:35:19,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:35:19,239 INFO L82 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 2 times [2020-12-09 06:35:19,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 06:35:19,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662076436] [2020-12-09 06:35:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 06:35:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:35:19,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:35:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 06:35:19,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 06:35:19,337 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 06:35:19,337 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 06:35:19,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 06:35:19,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:35:19 BoogieIcfgContainer [2020-12-09 06:35:19,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:35:19,557 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:35:19,557 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:35:19,558 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:35:19,558 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:15" (3/4) ... [2020-12-09 06:35:19,560 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 06:35:19,595 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b24792cf-b9f7-4642-99e4-319cbc4edd13/bin/utaipan/witness.graphml [2020-12-09 06:35:19,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:35:19,597 INFO L168 Benchmark]: Toolchain (without parser) took 4178.64 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 40.6 MB in the beginning and 24.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:19,597 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 43.7 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:35:19,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.74 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:19,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.76 ms. Allocated memory is still 60.8 MB. Free memory was 30.0 MB in the beginning and 45.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:19,598 INFO L168 Benchmark]: Boogie Preprocessor took 17.22 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:35:19,599 INFO L168 Benchmark]: RCFGBuilder took 223.98 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 32.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:19,599 INFO L168 Benchmark]: TraceAbstraction took 3674.01 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 31.6 MB in the beginning and 26.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:19,600 INFO L168 Benchmark]: Witness Printer took 38.44 ms. Allocated memory is still 86.0 MB. Free memory was 26.5 MB in the beginning and 24.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:35:19,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.8 MB in the beginning and 43.7 MB in the end (delta: 73.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 179.74 ms. Allocated memory is still 60.8 MB. Free memory was 40.4 MB in the beginning and 30.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.76 ms. Allocated memory is still 60.8 MB. Free memory was 30.0 MB in the beginning and 45.3 MB in the end (delta: -15.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.22 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 223.98 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 32.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3674.01 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 31.6 MB in the beginning and 26.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. * Witness Printer took 38.44 ms. Allocated memory is still 86.0 MB. Free memory was 26.5 MB in the beginning and 24.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L2] int i = 0; [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] EXPR numbers[i] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ [L3] COND TRUE i < 10 [L4] numbers[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 26 SDslu, 40 SDs, 0 SdLazy, 60 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=4, 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 3 QuantifiedInterpolants, 7728 SizeOfPredicates, 38 NumberOfNonLiveVariables, 310 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 3/21 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! Received shutdown request...