./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i --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_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/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 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 ............................................................................................................................................................................................................................................................................................................................................ 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 02:17:51,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:17:51,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:17:51,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:17:51,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:17:51,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:17:51,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:17:51,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:17:51,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:17:51,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:17:51,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:17:51,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:17:51,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:17:51,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:17:51,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:17:51,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:17:51,642 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:17:51,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:17:51,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:17:51,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:17:51,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:17:51,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:17:51,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:17:51,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:17:51,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:17:51,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:17:51,661 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:17:51,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:17:51,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:17:51,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:17:51,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:17:51,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:17:51,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:17:51,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:17:51,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:17:51,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:17:51,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:17:51,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:17:51,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:17:51,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:17:51,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:17:51,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:17:51,705 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:17:51,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:17:51,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:17:51,706 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:17:51,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:17:51,707 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:17:51,707 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:17:51,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:17:51,707 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:17:51,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:17:51,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:17:51,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:17:51,708 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:17:51,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:17:51,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:17:51,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:17:51,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:17:51,709 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:17:51,709 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:17:51,710 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:17:51,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:17:51,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:17:51,710 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:17:51,710 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:17:51,711 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:17:51,711 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:17:51,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:17:51,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:17:51,711 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:17:51,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:17:51,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:17:51,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:17:51,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:17:51,712 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:17:51,712 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:17:51,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:17:51,713 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_e939138b-ddbe-4bec-9403-627f8c50ddc3/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 -> 94dea6eddb2a1fd381e32f00f2713f560a4fbdc4 [2019-11-26 02:17:51,875 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:17:51,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:17:51,893 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:17:51,901 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:17:51,902 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:17:51,903 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/../../sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2019-11-26 02:17:51,951 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/data/2aaf095ce/ac752b2a202c4b3e93f6163e2840be8a/FLAG13ee09442 [2019-11-26 02:17:52,363 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:17:52,363 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/sv-benchmarks/c/array-memsafety/reverse_array_unsafe.i [2019-11-26 02:17:52,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/data/2aaf095ce/ac752b2a202c4b3e93f6163e2840be8a/FLAG13ee09442 [2019-11-26 02:17:52,686 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/data/2aaf095ce/ac752b2a202c4b3e93f6163e2840be8a [2019-11-26 02:17:52,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:17:52,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:17:52,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:17:52,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:17:52,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:17:52,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:17:52" (1/1) ... [2019-11-26 02:17:52,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627056e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:52, skipping insertion in model container [2019-11-26 02:17:52,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:17:52" (1/1) ... [2019-11-26 02:17:52,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:17:52,756 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:17:53,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:17:53,068 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:17:53,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:17:53,186 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:17:53,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53 WrapperNode [2019-11-26 02:17:53,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:17:53,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:17:53,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:17:53,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:17:53,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,235 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:17:53,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:17:53,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:17:53,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:17:53,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... [2019-11-26 02:17:53,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:17:53,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:17:53,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:17:53,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:17:53,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/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 02:17:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-26 02:17:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:17:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:17:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-26 02:17:53,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:17:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:17:53,885 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:17:53,885 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-26 02:17:53,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:53 BoogieIcfgContainer [2019-11-26 02:17:53,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:17:53,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:17:53,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:17:53,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:17:53,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:17:52" (1/3) ... [2019-11-26 02:17:53,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b46a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:17:53, skipping insertion in model container [2019-11-26 02:17:53,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:17:53" (2/3) ... [2019-11-26 02:17:53,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b46a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:17:53, skipping insertion in model container [2019-11-26 02:17:53,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:53" (3/3) ... [2019-11-26 02:17:53,894 INFO L109 eAbstractionObserver]: Analyzing ICFG reverse_array_unsafe.i [2019-11-26 02:17:53,901 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:17:53,905 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 23 error locations. [2019-11-26 02:17:53,912 INFO L249 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2019-11-26 02:17:53,926 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:17:53,926 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:17:53,926 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:17:53,926 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:17:53,926 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:17:53,926 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:17:53,926 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:17:53,927 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:17:53,939 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-11-26 02:17:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:17:53,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:53,945 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:53,945 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 02:17:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2019-11-26 02:17:53,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:17:53,958 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1939281385] [2019-11-26 02:17:53,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/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 02:17:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:54,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-26 02:17:54,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:54,144 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 02:17:54,144 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:17:54,151 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:17:54,151 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:17:54,151 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:17:54,158 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 02:17:54,159 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:54,163 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 02:17:54,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1939281385] [2019-11-26 02:17:54,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:17:54,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:17:54,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123096035] [2019-11-26 02:17:54,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:17:54,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:17:54,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:17:54,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:17:54,182 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2019-11-26 02:17:54,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:54,384 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-11-26 02:17:54,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:17:54,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-26 02:17:54,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:54,392 INFO L225 Difference]: With dead ends: 55 [2019-11-26 02:17:54,393 INFO L226 Difference]: Without dead ends: 53 [2019-11-26 02:17:54,394 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 02:17:54,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-11-26 02:17:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-11-26 02:17:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-26 02:17:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-11-26 02:17:54,421 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 7 [2019-11-26 02:17:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:54,421 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-11-26 02:17:54,421 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:17:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-11-26 02:17:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:17:54,421 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:54,422 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:54,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:17:54,623 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 02:17:54,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:54,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2019-11-26 02:17:54,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:17:54,624 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [585841429] [2019-11-26 02:17:54,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/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 02:17:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:17:54,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:17:54,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:17:54,699 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 02:17:54,699 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:17:54,712 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 02:17:54,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [585841429] [2019-11-26 02:17:54,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:17:54,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-26 02:17:54,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326253815] [2019-11-26 02:17:54,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:17:54,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:17:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:17:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:17:54,715 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2019-11-26 02:17:54,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:17:54,875 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2019-11-26 02:17:54,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:17:54,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:17:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:17:54,878 INFO L225 Difference]: With dead ends: 103 [2019-11-26 02:17:54,878 INFO L226 Difference]: Without dead ends: 103 [2019-11-26 02:17:54,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 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 02:17:54,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-26 02:17:54,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 54. [2019-11-26 02:17:54,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-11-26 02:17:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2019-11-26 02:17:54,886 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 7 [2019-11-26 02:17:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:17:54,886 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2019-11-26 02:17:54,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:17:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2019-11-26 02:17:54,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:17:54,887 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:17:54,887 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:17:55,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:17:55,089 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr21REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr17REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr16REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr20REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr19REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr18REQUIRES_VIOLATION, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-11-26 02:17:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:17:55,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1805088679, now seen corresponding path program 1 times [2019-11-26 02:17:55,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:17:55,090 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [215178100] [2019-11-26 02:17:55,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/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 02:17:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:17:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:17:55,223 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:17:55,224 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:17:55,424 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:17:55,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:17:55 BoogieIcfgContainer [2019-11-26 02:17:55,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:17:55,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:17:55,441 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:17:55,442 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:17:55,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:17:53" (3/4) ... [2019-11-26 02:17:55,444 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:17:55,480 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e939138b-ddbe-4bec-9403-627f8c50ddc3/bin/utaipan/witness.graphml [2019-11-26 02:17:55,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:17:55,481 INFO L168 Benchmark]: Toolchain (without parser) took 2791.29 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -84.7 MB). Peak memory consumption was 67.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:55,481 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:17:55,482 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:55,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.39 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:55,483 INFO L168 Benchmark]: Boogie Preprocessor took 39.72 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 02:17:55,483 INFO L168 Benchmark]: RCFGBuilder took 611.33 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:55,484 INFO L168 Benchmark]: TraceAbstraction took 1553.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:55,484 INFO L168 Benchmark]: Witness Printer took 38.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:17:55,487 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 495.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -195.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.39 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.72 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. * RCFGBuilder took 611.33 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: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1553.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. * Witness Printer took 38.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 522]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L515] int i, j, tmp; [L516] int length = __VERIFIER_nondet_int(); [L517] COND TRUE length < 1 [L517] length = 1 [L518] COND FALSE !(length % 2 == 0) [L519] int *arr = __builtin_alloca (length); [L520] int i = 0; [L520] COND TRUE i < length [L522] arr[i] = __VERIFIER_nondet_int() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 23 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 210 SDslu, 51 SDs, 0 SdLazy, 50 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 49 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 294 SizeOfPredicates, 2 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...