./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/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 639853f2f40cff84155fe09902eff2b5a20185f5 .................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 21:21:28,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:21:28,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:21:28,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:21:28,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:21:28,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:21:28,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:21:28,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:21:28,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:21:28,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:21:28,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:21:28,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:21:28,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:21:28,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:21:28,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:21:28,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:21:28,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:21:28,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:21:28,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:21:28,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:21:28,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:21:28,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:21:28,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:21:28,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:21:28,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:21:28,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:21:28,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:21:28,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:21:28,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:21:28,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:21:28,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:21:28,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:21:28,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:21:28,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:21:28,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:21:28,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:21:28,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:21:28,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:21:28,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:21:28,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:21:28,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:21:28,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 21:21:28,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:21:28,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:21:28,073 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:21:28,073 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:21:28,073 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:21:28,074 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:21:28,074 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:21:28,074 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:21:28,074 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:21:28,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 21:21:28,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 21:21:28,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 21:21:28,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:21:28,076 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:21:28,076 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:21:28,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:21:28,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:21:28,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:21:28,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:21:28,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:21:28,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:21:28,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:21:28,077 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:21:28,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:21:28,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:21:28,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:21:28,077 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/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 -> 639853f2f40cff84155fe09902eff2b5a20185f5 [2019-12-07 21:21:28,182 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:21:28,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:21:28,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:21:28,197 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:21:28,198 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:21:28,198 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2019-12-07 21:21:28,238 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/data/50388a3bb/2b2e61272e864ee79241dd315dde5be2/FLAG884fffac6 [2019-12-07 21:21:28,689 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:21:28,689 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2_-read.c [2019-12-07 21:21:28,693 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/data/50388a3bb/2b2e61272e864ee79241dd315dde5be2/FLAG884fffac6 [2019-12-07 21:21:28,701 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/data/50388a3bb/2b2e61272e864ee79241dd315dde5be2 [2019-12-07 21:21:28,703 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:21:28,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:21:28,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:21:28,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:21:28,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:21:28,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374ca533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28, skipping insertion in model container [2019-12-07 21:21:28,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:21:28,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:21:28,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:21:28,877 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:21:28,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:21:28,900 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:21:28,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28 WrapperNode [2019-12-07 21:21:28,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:21:28,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:21:28,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:21:28,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:21:28,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:21:28,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:21:28,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:21:28,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:21:28,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... [2019-12-07 21:21:28,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:21:28,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:21:28,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:21:28,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:21:28,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:21:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 21:21:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:21:28,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:21:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 21:21:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 21:21:28,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 21:21:29,243 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:21:29,244 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 21:21:29,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:21:29 BoogieIcfgContainer [2019-12-07 21:21:29,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:21:29,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:21:29,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:21:29,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:21:29,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:21:28" (1/3) ... [2019-12-07 21:21:29,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25473a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:21:29, skipping insertion in model container [2019-12-07 21:21:29,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:21:28" (2/3) ... [2019-12-07 21:21:29,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25473a38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:21:29, skipping insertion in model container [2019-12-07 21:21:29,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:21:29" (3/3) ... [2019-12-07 21:21:29,249 INFO L109 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_-read.c [2019-12-07 21:21:29,256 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:21:29,260 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-12-07 21:21:29,267 INFO L249 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-12-07 21:21:29,279 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:21:29,279 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 21:21:29,279 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:21:29,280 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:21:29,280 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:21:29,280 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:21:29,280 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:21:29,280 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:21:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 21:21:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:21:29,293 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:21:29,294 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:21:29,294 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:21:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:21:29,298 INFO L82 PathProgramCache]: Analyzing trace with hash 3894484, now seen corresponding path program 1 times [2019-12-07 21:21:29,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:21:29,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448377843] [2019-12-07 21:21:29,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:21:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:21:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:21:29,392 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448377843] [2019-12-07 21:21:29,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:21:29,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 21:21:29,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534273859] [2019-12-07 21:21:29,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 21:21:29,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:21:29,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 21:21:29,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:21:29,406 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-12-07 21:21:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:21:29,433 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2019-12-07 21:21:29,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 21:21:29,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 21:21:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:21:29,440 INFO L225 Difference]: With dead ends: 39 [2019-12-07 21:21:29,441 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 21:21:29,442 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 21:21:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 21:21:29,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2019-12-07 21:21:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 21:21:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 21:21:29,463 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 4 [2019-12-07 21:21:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:21:29,463 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 21:21:29,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 21:21:29,464 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-07 21:21:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 21:21:29,464 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:21:29,464 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 21:21:29,464 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:21:29,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:21:29,464 INFO L82 PathProgramCache]: Analyzing trace with hash 3793645, now seen corresponding path program 1 times [2019-12-07 21:21:29,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:21:29,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772636890] [2019-12-07 21:21:29,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:21:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:21:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:21:29,502 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772636890] [2019-12-07 21:21:29,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:21:29,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:21:29,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095015921] [2019-12-07 21:21:29,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:21:29,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:21:29,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:21:29,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:21:29,505 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2019-12-07 21:21:29,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:21:29,552 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2019-12-07 21:21:29,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 21:21:29,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-12-07 21:21:29,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:21:29,554 INFO L225 Difference]: With dead ends: 40 [2019-12-07 21:21:29,554 INFO L226 Difference]: Without dead ends: 40 [2019-12-07 21:21:29,555 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:21:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-12-07 21:21:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 25. [2019-12-07 21:21:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 21:21:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-12-07 21:21:29,558 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 4 [2019-12-07 21:21:29,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:21:29,559 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-12-07 21:21:29,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:21:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-12-07 21:21:29,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:21:29,559 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:21:29,559 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:21:29,560 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:21:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:21:29,560 INFO L82 PathProgramCache]: Analyzing trace with hash 117695404, now seen corresponding path program 1 times [2019-12-07 21:21:29,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:21:29,560 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629100298] [2019-12-07 21:21:29,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:21:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:21:29,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:21:29,601 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629100298] [2019-12-07 21:21:29,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:21:29,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 21:21:29,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127844428] [2019-12-07 21:21:29,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 21:21:29,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:21:29,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 21:21:29,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:21:29,603 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2019-12-07 21:21:29,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:21:29,657 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2019-12-07 21:21:29,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 21:21:29,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 21:21:29,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:21:29,658 INFO L225 Difference]: With dead ends: 44 [2019-12-07 21:21:29,658 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 21:21:29,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 21:21:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 21:21:29,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 26. [2019-12-07 21:21:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 21:21:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2019-12-07 21:21:29,662 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 5 [2019-12-07 21:21:29,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:21:29,662 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2019-12-07 21:21:29,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 21:21:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2019-12-07 21:21:29,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:21:29,663 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:21:29,663 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:21:29,663 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:21:29,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:21:29,663 INFO L82 PathProgramCache]: Analyzing trace with hash 117692998, now seen corresponding path program 1 times [2019-12-07 21:21:29,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:21:29,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82612902] [2019-12-07 21:21:29,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:21:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 21:21:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 21:21:29,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82612902] [2019-12-07 21:21:29,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 21:21:29,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 21:21:29,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201098267] [2019-12-07 21:21:29,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 21:21:29,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 21:21:29,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 21:21:29,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 21:21:29,696 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 4 states. [2019-12-07 21:21:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 21:21:29,723 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-12-07 21:21:29,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 21:21:29,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 21:21:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 21:21:29,724 INFO L225 Difference]: With dead ends: 24 [2019-12-07 21:21:29,724 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 21:21:29,724 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 21:21:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 21:21:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 21:21:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 21:21:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-07 21:21:29,726 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2019-12-07 21:21:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 21:21:29,726 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-07 21:21:29,726 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 21:21:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-07 21:21:29,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 21:21:29,727 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:21:29,727 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 21:21:29,727 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2019-12-07 21:21:29,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:21:29,727 INFO L82 PathProgramCache]: Analyzing trace with hash 117692999, now seen corresponding path program 1 times [2019-12-07 21:21:29,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:21:29,727 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830739866] [2019-12-07 21:21:29,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:21:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:21:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:21:29,761 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:21:29,762 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:21:29,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:21:29 BoogieIcfgContainer [2019-12-07 21:21:29,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:21:29,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:21:29,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:21:29,776 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:21:29,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:21:29" (3/4) ... [2019-12-07 21:21:29,778 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 21:21:29,803 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d7ff548-45df-4eaf-aa88-3066ef99dcb5/bin/utaipan/witness.graphml [2019-12-07 21:21:29,804 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:21:29,805 INFO L168 Benchmark]: Toolchain (without parser) took 1100.44 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 946.2 MB in the beginning and 997.3 MB in the end (delta: -51.1 MB). Peak memory consumption was 56.3 MB. Max. memory is 11.5 GB. [2019-12-07 21:21:29,805 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:21:29,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 21:21:29,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:21:29,806 INFO L168 Benchmark]: Boogie Preprocessor took 18.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 21:21:29,807 INFO L168 Benchmark]: RCFGBuilder took 300.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:21:29,807 INFO L168 Benchmark]: TraceAbstraction took 530.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 997.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:21:29,807 INFO L168 Benchmark]: Witness Printer took 27.83 ms. Allocated memory is still 1.1 GB. Free memory is still 997.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:21:29,809 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.65 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -156.2 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 25.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.21 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 300.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 530.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 997.3 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.6 MB. Max. memory is 11.5 GB. * Witness Printer took 27.83 ms. Allocated memory is still 1.1 GB. Free memory is still 997.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L32] int i, b[100]; [L33] i = 0 [L33] COND TRUE i < 100 [L21] int a[n], i; [L22] i = 0 [L22] COND FALSE !(i < size) [L12] int res = 0, i; [L13] i = 0 [L13] COND TRUE i < size [L14] b[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 11 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 123 SDslu, 89 SDs, 0 SdLazy, 103 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, 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, 4 MinimizatonAttempts, 47 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...