./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 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 03:01:46,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 03:01:46,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 03:01:46,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 03:01:46,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 03:01:46,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 03:01:46,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 03:01:46,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 03:01:46,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 03:01:46,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 03:01:46,666 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 03:01:46,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 03:01:46,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 03:01:46,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 03:01:46,669 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 03:01:46,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 03:01:46,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 03:01:46,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 03:01:46,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 03:01:46,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 03:01:46,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 03:01:46,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 03:01:46,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 03:01:46,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 03:01:46,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 03:01:46,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 03:01:46,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 03:01:46,691 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 03:01:46,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 03:01:46,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 03:01:46,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 03:01:46,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 03:01:46,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 03:01:46,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 03:01:46,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 03:01:46,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 03:01:46,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 03:01:46,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 03:01:46,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 03:01:46,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 03:01:46,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 03:01:46,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 03:01:46,723 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 03:01:46,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 03:01:46,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 03:01:46,724 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 03:01:46,725 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 03:01:46,725 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 03:01:46,725 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 03:01:46,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 03:01:46,725 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 03:01:46,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 03:01:46,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 03:01:46,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 03:01:46,726 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 03:01:46,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 03:01:46,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 03:01:46,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 03:01:46,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 03:01:46,727 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 03:01:46,727 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 03:01:46,728 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 03:01:46,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 03:01:46,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 03:01:46,728 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 03:01:46,728 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 03:01:46,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 03:01:46,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 03:01:46,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 03:01:46,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 03:01:46,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 03:01:46,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 03:01:46,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:01:46,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 03:01:46,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 03:01:46,730 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 03:01:46,731 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 03:01:46,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 03:01:46,732 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/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 [2019-11-26 03:01:46,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 03:01:46,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 03:01:46,915 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 03:01:46,917 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 03:01:46,917 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 03:01:46,918 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2019-11-26 03:01:46,971 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/data/2d57d8f04/37ed04d3c7224584a703f372a0246b78/FLAGcc3d36ecd [2019-11-26 03:01:47,323 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 03:01:47,324 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2019-11-26 03:01:47,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/data/2d57d8f04/37ed04d3c7224584a703f372a0246b78/FLAGcc3d36ecd [2019-11-26 03:01:47,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/data/2d57d8f04/37ed04d3c7224584a703f372a0246b78 [2019-11-26 03:01:47,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 03:01:47,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 03:01:47,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 03:01:47,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 03:01:47,806 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 03:01:47,807 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:01:47" (1/1) ... [2019-11-26 03:01:47,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b54e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:47, skipping insertion in model container [2019-11-26 03:01:47,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 03:01:47" (1/1) ... [2019-11-26 03:01:47,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 03:01:47,833 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:01:48,081 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 03:01:48,083 INFO L968 CHandler]: at location: C: (int*) numbers [15] [2019-11-26 03:01:48,083 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 03:01:48,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:48,100 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-26 03:01:48,101 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 03:01:48,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:48,119 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 03:01:48,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 03:01:48,159 INFO L205 MainTranslator]: Completed translation [2019-11-26 03:01:48,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48 WrapperNode [2019-11-26 03:01:48,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 03:01:48,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 03:01:48,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 03:01:48,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 03:01:48,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 03:01:48,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 03:01:48,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 03:01:48,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 03:01:48,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... [2019-11-26 03:01:48,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 03:01:48,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 03:01:48,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 03:01:48,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 03:01:48,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 03:01:48,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 03:01:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-11-26 03:01:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 03:01:48,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 03:01:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 03:01:48,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 03:01:48,497 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 03:01:48,497 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 03:01:48,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:48 BoogieIcfgContainer [2019-11-26 03:01:48,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 03:01:48,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 03:01:48,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 03:01:48,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 03:01:48,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 03:01:47" (1/3) ... [2019-11-26 03:01:48,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548e8334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:01:48, skipping insertion in model container [2019-11-26 03:01:48,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 03:01:48" (2/3) ... [2019-11-26 03:01:48,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548e8334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 03:01:48, skipping insertion in model container [2019-11-26 03:01:48,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:48" (3/3) ... [2019-11-26 03:01:48,505 INFO L109 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2019-11-26 03:01:48,511 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 03:01:48,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-26 03:01:48,523 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-26 03:01:48,541 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 03:01:48,541 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 03:01:48,541 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 03:01:48,541 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 03:01:48,542 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 03:01:48,542 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 03:01:48,542 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 03:01:48,542 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 03:01:48,553 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2019-11-26 03:01:48,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 03:01:48,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:48,558 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 03:01:48,559 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 03:01:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:48,563 INFO L82 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2019-11-26 03:01:48,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:01:48,572 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2067220341] [2019-11-26 03:01:48,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:48,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 03:01:48,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:48,721 INFO L377 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 [2019-11-26 03:01:48,721 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:01:48,729 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:48,730 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:01:48,730 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 03:01:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:48,740 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:48,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:48,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2067220341] [2019-11-26 03:01:48,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:48,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 03:01:48,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037301041] [2019-11-26 03:01:48,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 03:01:48,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:01:48,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 03:01:48,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 03:01:48,763 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 3 states. [2019-11-26 03:01:48,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:48,812 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-11-26 03:01:48,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 03:01:48,814 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 03:01:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:48,822 INFO L225 Difference]: With dead ends: 12 [2019-11-26 03:01:48,822 INFO L226 Difference]: Without dead ends: 10 [2019-11-26 03:01:48,824 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 03:01:48,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-26 03:01:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-26 03:01:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-26 03:01:48,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-26 03:01:48,845 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2019-11-26 03:01:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:48,846 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-26 03:01:48,846 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 03:01:48,846 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-26 03:01:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 03:01:48,846 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:48,846 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 03:01:49,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:49,047 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 03:01:49,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:49,048 INFO L82 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2019-11-26 03:01:49,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:01:49,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1693752191] [2019-11-26 03:01:49,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:49,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 03:01:49,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:49,132 INFO L377 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 [2019-11-26 03:01:49,133 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 03:01:49,145 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:49,145 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 03:01:49,146 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-26 03:01:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:49,163 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:49,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:49,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1693752191] [2019-11-26 03:01:49,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:49,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-26 03:01:49,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718465780] [2019-11-26 03:01:49,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 03:01:49,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:01:49,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 03:01:49,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:01:49,251 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 4 states. [2019-11-26 03:01:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:49,347 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-26 03:01:49,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 03:01:49,349 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-26 03:01:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:49,350 INFO L225 Difference]: With dead ends: 22 [2019-11-26 03:01:49,350 INFO L226 Difference]: Without dead ends: 22 [2019-11-26 03:01:49,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 03:01:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-26 03:01:49,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2019-11-26 03:01:49,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-26 03:01:49,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2019-11-26 03:01:49,354 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 4 [2019-11-26 03:01:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:49,354 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2019-11-26 03:01:49,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 03:01:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2019-11-26 03:01:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 03:01:49,355 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:49,355 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:49,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:49,556 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 03:01:49,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:49,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2019-11-26 03:01:49,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:01:49,557 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [6387614] [2019-11-26 03:01:49,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:49,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 03:01:49,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:49,690 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:49,690 INFO L377 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 [2019-11-26 03:01:49,692 INFO L496 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-26 03:01:49,697 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:49,698 INFO L496 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. [2019-11-26 03:01:49,699 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:9 [2019-11-26 03:01:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:49,725 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:49,783 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [6387614] [2019-11-26 03:01:49,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 03:01:49,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-26 03:01:49,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423076000] [2019-11-26 03:01:49,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 03:01:49,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:01:49,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 03:01:49,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 03:01:49,784 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand 6 states. [2019-11-26 03:01:49,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:49,893 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-11-26 03:01:49,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 03:01:49,896 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-26 03:01:49,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:49,897 INFO L225 Difference]: With dead ends: 15 [2019-11-26 03:01:49,897 INFO L226 Difference]: Without dead ends: 15 [2019-11-26 03:01:49,897 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:01:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-11-26 03:01:49,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-11-26 03:01:49,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-11-26 03:01:49,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-11-26 03:01:49,900 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2019-11-26 03:01:49,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:49,900 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-11-26 03:01:49,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 03:01:49,901 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-11-26 03:01:49,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 03:01:49,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:49,901 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:50,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:50,106 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 03:01:50,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:50,106 INFO L82 PathProgramCache]: Analyzing trace with hash 528133503, now seen corresponding path program 1 times [2019-11-26 03:01:50,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:01:50,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2062736270] [2019-11-26 03:01:50,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:50,188 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 03:01:50,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:50,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:50,208 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:50,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2062736270] [2019-11-26 03:01:50,234 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766344777] [2019-11-26 03:01:50,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:01:50,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:50,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 03:01:50,294 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:50,297 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:50,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 03:01:50,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 6 [2019-11-26 03:01:50,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796171870] [2019-11-26 03:01:50,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-26 03:01:50,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:01:50,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-26 03:01:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 03:01:50,301 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2019-11-26 03:01:50,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:50,403 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-11-26 03:01:50,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 03:01:50,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-26 03:01:50,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:50,404 INFO L225 Difference]: With dead ends: 30 [2019-11-26 03:01:50,405 INFO L226 Difference]: Without dead ends: 30 [2019-11-26 03:01:50,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2019-11-26 03:01:50,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-26 03:01:50,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2019-11-26 03:01:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 03:01:50,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-11-26 03:01:50,408 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2019-11-26 03:01:50,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:50,408 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-11-26 03:01:50,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-26 03:01:50,409 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-11-26 03:01:50,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 03:01:50,409 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:50,409 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-26 03:01:50,811 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:01:50,812 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 03:01:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:50,812 INFO L82 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2019-11-26 03:01:50,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:01:50,812 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [332118172] [2019-11-26 03:01:50,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:50,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 03:01:50,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:50,952 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:50,953 INFO L377 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 [2019-11-26 03:01:50,954 INFO L496 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-26 03:01:50,958 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:50,959 INFO L496 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. [2019-11-26 03:01:50,959 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2019-11-26 03:01:50,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:50,982 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:51,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:51,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [332118172] [2019-11-26 03:01:51,110 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618812641] [2019-11-26 03:01:51,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:01:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 03:01:51,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 03:01:51,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 03:01:51,173 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:51,173 INFO L377 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 [2019-11-26 03:01:51,174 INFO L496 ElimStorePlain]: Start of recursive call 2: 3 dim-0 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-26 03:01:51,177 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 03:01:51,178 INFO L496 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. [2019-11-26 03:01:51,178 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:9 [2019-11-26 03:01:51,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:51,192 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 03:01:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 03:01:51,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 03:01:51,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 10 [2019-11-26 03:01:51,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429372909] [2019-11-26 03:01:51,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 03:01:51,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 03:01:51,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 03:01:51,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-26 03:01:51,323 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 10 states. [2019-11-26 03:01:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 03:01:51,585 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2019-11-26 03:01:51,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 03:01:51,586 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10 [2019-11-26 03:01:51,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 03:01:51,586 INFO L225 Difference]: With dead ends: 20 [2019-11-26 03:01:51,586 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 03:01:51,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-26 03:01:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 03:01:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 03:01:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 03:01:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-11-26 03:01:51,590 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2019-11-26 03:01:51,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 03:01:51,590 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-11-26 03:01:51,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 03:01:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-11-26 03:01:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 03:01:51,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 03:01:51,591 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2019-11-26 03:01:51,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 03:01:51,992 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 03:01:51,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 03:01:51,992 INFO L82 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 1 times [2019-11-26 03:01:51,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 03:01:51,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [612581518] [2019-11-26 03:01:51,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 03:01:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 03:01:52,150 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 03:01:52,150 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 03:01:52,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 03:01:52,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 03:01:52 BoogieIcfgContainer [2019-11-26 03:01:52,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 03:01:52,386 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 03:01:52,386 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 03:01:52,387 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 03:01:52,387 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 03:01:48" (3/4) ... [2019-11-26 03:01:52,389 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 03:01:52,425 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_af034950-f380-409c-92fc-790f179d162e/bin/utaipan/witness.graphml [2019-11-26 03:01:52,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 03:01:52,427 INFO L168 Benchmark]: Toolchain (without parser) took 4628.96 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.4 MB in the beginning and 922.9 MB in the end (delta: 28.5 MB). Peak memory consumption was 163.8 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:52,427 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:52,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:52,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:52,428 INFO L168 Benchmark]: Boogie Preprocessor took 26.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:52,429 INFO L168 Benchmark]: RCFGBuilder took 276.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:52,429 INFO L168 Benchmark]: TraceAbstraction took 3886.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.9 MB in the end (delta: 181.1 MB). Peak memory consumption was 181.1 MB. Max. memory is 11.5 GB. [2019-11-26 03:01:52,429 INFO L168 Benchmark]: Witness Printer took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 922.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 03:01:52,432 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 361.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -174.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 276.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3886.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 922.9 MB in the end (delta: 181.1 MB). Peak memory consumption was 181.1 MB. Max. memory is 11.5 GB. * Witness Printer took 38.94 ms. Allocated memory is still 1.2 GB. Free memory is still 922.9 MB. There was no memory consumed. Max. memory is 11.5 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. Result: UNSAFE, OverallTime: 3.8s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 44 SDslu, 78 SDs, 0 SdLazy, 109 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 3 QuantifiedInterpolants, 8248 SizeOfPredicates, 37 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 0/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...