./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/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 aa3ae4378a5284e50be7191d52900376e96b0fdc ......................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-635dfa2 [2018-12-03 07:50:57,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 07:50:57,183 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 07:50:57,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 07:50:57,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 07:50:57,189 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 07:50:57,190 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 07:50:57,191 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 07:50:57,191 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 07:50:57,192 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 07:50:57,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 07:50:57,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 07:50:57,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 07:50:57,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 07:50:57,194 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 07:50:57,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 07:50:57,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 07:50:57,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 07:50:57,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 07:50:57,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 07:50:57,198 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 07:50:57,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 07:50:57,200 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 07:50:57,200 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 07:50:57,200 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 07:50:57,201 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 07:50:57,201 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 07:50:57,201 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 07:50:57,202 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 07:50:57,202 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 07:50:57,203 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 07:50:57,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 07:50:57,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 07:50:57,203 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 07:50:57,204 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 07:50:57,204 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 07:50:57,204 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 07:50:57,211 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 07:50:57,212 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 07:50:57,212 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 07:50:57,212 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 07:50:57,212 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 07:50:57,212 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 07:50:57,212 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 07:50:57,213 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 07:50:57,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 07:50:57,214 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 07:50:57,214 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 07:50:57,215 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 07:50:57,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 07:50:57,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 07:50:57,215 INFO L133 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/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/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 -> aa3ae4378a5284e50be7191d52900376e96b0fdc [2018-12-03 07:50:57,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 07:50:57,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 07:50:57,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 07:50:57,246 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 07:50:57,246 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 07:50:57,246 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c [2018-12-03 07:50:57,290 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/data/054259c9b/cbde314edab4487c889966389e23ca28/FLAGe625b9ab4 [2018-12-03 07:50:57,701 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 07:50:57,702 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c [2018-12-03 07:50:57,705 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/data/054259c9b/cbde314edab4487c889966389e23ca28/FLAGe625b9ab4 [2018-12-03 07:50:57,713 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/data/054259c9b/cbde314edab4487c889966389e23ca28 [2018-12-03 07:50:57,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 07:50:57,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 07:50:57,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 07:50:57,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 07:50:57,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 07:50:57,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c04efe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57, skipping insertion in model container [2018-12-03 07:50:57,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 07:50:57,732 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 07:50:57,814 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:50:57,820 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 07:50:57,829 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 07:50:57,837 INFO L195 MainTranslator]: Completed translation [2018-12-03 07:50:57,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57 WrapperNode [2018-12-03 07:50:57,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 07:50:57,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 07:50:57,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 07:50:57,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 07:50:57,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,851 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 07:50:57,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 07:50:57,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 07:50:57,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 07:50:57,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,857 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... [2018-12-03 07:50:57,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 07:50:57,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 07:50:57,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 07:50:57,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 07:50:57,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/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 [2018-12-03 07:50:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 07:50:57,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 07:50:57,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 07:50:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-03 07:50:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 07:50:57,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 07:50:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 07:50:57,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 07:50:57,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-03 07:50:58,017 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 07:50:58,017 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 07:50:58,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:50:58 BoogieIcfgContainer [2018-12-03 07:50:58,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 07:50:58,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 07:50:58,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 07:50:58,020 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 07:50:58,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 07:50:57" (1/3) ... [2018-12-03 07:50:58,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66441477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:50:58, skipping insertion in model container [2018-12-03 07:50:58,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 07:50:57" (2/3) ... [2018-12-03 07:50:58,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66441477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 07:50:58, skipping insertion in model container [2018-12-03 07:50:58,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:50:58" (3/3) ... [2018-12-03 07:50:58,022 INFO L112 eAbstractionObserver]: Analyzing ICFG derefInLoop1_false-valid-deref.c [2018-12-03 07:50:58,028 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 07:50:58,033 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-12-03 07:50:58,042 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-12-03 07:50:58,057 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 07:50:58,057 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 07:50:58,057 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 07:50:58,057 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 07:50:58,058 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 07:50:58,058 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 07:50:58,058 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 07:50:58,058 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 07:50:58,066 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-12-03 07:50:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 07:50:58,071 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:50:58,071 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:50:58,073 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-03 07:50:58,076 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:50:58,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1075805963, now seen corresponding path program 1 times [2018-12-03 07:50:58,077 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:50:58,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:50:58,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,105 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:50:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:50:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:50:58,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:50:58,145 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 07:50:58,145 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:50:58,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-03 07:50:58,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-03 07:50:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 07:50:58,157 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-12-03 07:50:58,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:50:58,165 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-12-03 07:50:58,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-03 07:50:58,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-03 07:50:58,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:50:58,171 INFO L225 Difference]: With dead ends: 18 [2018-12-03 07:50:58,171 INFO L226 Difference]: Without dead ends: 15 [2018-12-03 07:50:58,172 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-03 07:50:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-03 07:50:58,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-03 07:50:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-03 07:50:58,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-12-03 07:50:58,191 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2018-12-03 07:50:58,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:50:58,191 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-12-03 07:50:58,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-03 07:50:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-12-03 07:50:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-03 07:50:58,192 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:50:58,192 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:50:58,192 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-03 07:50:58,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:50:58,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1075819417, now seen corresponding path program 1 times [2018-12-03 07:50:58,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:50:58,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:50:58,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,193 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:50:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:50:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:50:58,214 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 07:50:58,214 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-03 07:50:58,214 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:50:58,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 07:50:58,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 07:50:58,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:50:58,216 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 3 states. [2018-12-03 07:50:58,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:50:58,231 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-12-03 07:50:58,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 07:50:58,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-03 07:50:58,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:50:58,232 INFO L225 Difference]: With dead ends: 18 [2018-12-03 07:50:58,232 INFO L226 Difference]: Without dead ends: 18 [2018-12-03 07:50:58,233 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 07:50:58,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-12-03 07:50:58,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-12-03 07:50:58,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-03 07:50:58,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-12-03 07:50:58,235 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-12-03 07:50:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:50:58,235 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-12-03 07:50:58,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 07:50:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-12-03 07:50:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 07:50:58,235 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:50:58,235 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:50:58,235 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-03 07:50:58,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:50:58,236 INFO L82 PathProgramCache]: Analyzing trace with hash -643356833, now seen corresponding path program 1 times [2018-12-03 07:50:58,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:50:58,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:50:58,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,236 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:50:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 07:50:58,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 07:50:58,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 07:50:58,263 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-03 07:50:58,263 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-12-03 07:50:58,264 INFO L205 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [16], [23], [27], [29], [30], [31], [32] [2018-12-03 07:50:58,283 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-03 07:50:58,283 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 07:50:58,373 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 07:50:58,373 INFO L272 AbstractInterpreter]: Visited 10 different actions 13 times. Merged at 2 different actions 2 times. Never widened. Performed 82 root evaluator evaluations with a maximum evaluation depth of 3. Performed 82 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 15 variables. [2018-12-03 07:50:58,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:50:58,379 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 07:50:58,411 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 89.48% of their original sizes. [2018-12-03 07:50:58,411 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 07:50:58,428 INFO L418 sIntCurrentIteration]: We unified 11 AI predicates to 11 [2018-12-03 07:50:58,428 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 07:50:58,429 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-03 07:50:58,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-12-03 07:50:58,429 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 07:50:58,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-03 07:50:58,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-03 07:50:58,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-03 07:50:58,430 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2018-12-03 07:50:58,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 07:50:58,499 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-12-03 07:50:58,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-03 07:50:58,499 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-12-03 07:50:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 07:50:58,499 INFO L225 Difference]: With dead ends: 25 [2018-12-03 07:50:58,500 INFO L226 Difference]: Without dead ends: 25 [2018-12-03 07:50:58,500 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-03 07:50:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-12-03 07:50:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2018-12-03 07:50:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-03 07:50:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2018-12-03 07:50:58,502 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2018-12-03 07:50:58,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 07:50:58,502 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2018-12-03 07:50:58,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-03 07:50:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2018-12-03 07:50:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-03 07:50:58,502 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 07:50:58,502 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 07:50:58,502 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2018-12-03 07:50:58,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 07:50:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash -643355199, now seen corresponding path program 1 times [2018-12-03 07:50:58,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 07:50:58,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 07:50:58,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 07:50:58,503 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 07:50:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 07:50:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 07:50:58,533 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 07:50:58,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 07:50:58 BoogieIcfgContainer [2018-12-03 07:50:58,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 07:50:58,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 07:50:58,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 07:50:58,547 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 07:50:58,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 07:50:58" (3/4) ... [2018-12-03 07:50:58,548 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 07:50:58,575 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c3844bfb-a456-4a89-ba85-3f64a8fcb465/bin-2019/utaipan/witness.graphml [2018-12-03 07:50:58,575 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 07:50:58,576 INFO L168 Benchmark]: Toolchain (without parser) took 861.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 958.8 MB in the beginning and 1.0 GB in the end (delta: -91.2 MB). Peak memory consumption was 44.1 MB. Max. memory is 11.5 GB. [2018-12-03 07:50:58,577 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:50:58,577 INFO L168 Benchmark]: CACSL2BoogieTranslator took 122.19 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 947.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-03 07:50:58,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.08 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:50:58,578 INFO L168 Benchmark]: Boogie Preprocessor took 40.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-12-03 07:50:58,578 INFO L168 Benchmark]: RCFGBuilder took 125.16 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-12-03 07:50:58,579 INFO L168 Benchmark]: TraceAbstraction took 528.42 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. [2018-12-03 07:50:58,579 INFO L168 Benchmark]: Witness Printer took 28.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 07:50:58,581 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 122.19 ms. Allocated memory is still 1.0 GB. Free memory was 958.8 MB in the beginning and 947.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.08 ms. Allocated memory is still 1.0 GB. Free memory is still 947.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -183.2 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 125.16 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: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 528.42 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 28.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2] int* p; [L3] int i = 0; VAL [i=0] [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={42:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [a={42:0}, i=0, p={42:0}] [L3] i++ [L3] COND TRUE i < 2 [L4] int a[10]; VAL [a={43:0}, i=1, p={42:0}] [L5] COND FALSE !(i == 0) VAL [a={43:0}, i=1, p={42:0}] [L8] p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 3 error locations. UNSAFE Result, 0.4s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 13 SDslu, 30 SDs, 0 SdLazy, 16 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8654401154401153 AbsIntWeakeningRatio, 1.0909090909090908 AbsIntAvgWeakeningVarsNumRemoved, 1.1818181818181819 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 353 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...