./Ultimate.py --spec ../../sv-benchmarks/c/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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/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_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/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 0.1.23-5842f4b [2018-11-18 12:50:27,600 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:50:27,602 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:50:27,609 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:50:27,609 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:50:27,609 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:50:27,610 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:50:27,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:50:27,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:50:27,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:50:27,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:50:27,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:50:27,614 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:50:27,615 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:50:27,616 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:50:27,616 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:50:27,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:50:27,618 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:50:27,619 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:50:27,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:50:27,621 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:50:27,622 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:50:27,624 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:50:27,624 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:50:27,624 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:50:27,625 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:50:27,625 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:50:27,626 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:50:27,627 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:50:27,627 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:50:27,628 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:50:27,628 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:50:27,628 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:50:27,628 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:50:27,629 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:50:27,629 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:50:27,630 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-11-18 12:50:27,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:50:27,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:50:27,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:50:27,638 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:50:27,639 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:50:27,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:50:27,639 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:50:27,639 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:50:27,639 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:50:27,639 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:50:27,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:50:27,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:50:27,640 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:50:27,640 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 12:50:27,640 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 12:50:27,641 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:50:27,641 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:50:27,641 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 12:50:27,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:50:27,641 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:50:27,641 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:50:27,642 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 12:50:27,642 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 12:50:27,642 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 12:50:27,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:50:27,642 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:50:27,642 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:50:27,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:50:27,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:50:27,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:50:27,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:50:27,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:50:27,643 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:50:27,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:50:27,643 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:50:27,644 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:50:27,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:50:27,644 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_08b135dd-0d9d-4756-8846-4f1d6c180670/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 [2018-11-18 12:50:27,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:50:27,676 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:50:27,679 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:50:27,680 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:50:27,680 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:50:27,681 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c [2018-11-18 12:50:27,718 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/data/5f3371766/7329f60d05a648bc871379ec762080c3/FLAG4742c61e6 [2018-11-18 12:50:28,027 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:50:28,027 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/sv-benchmarks/c/memsafety-ext3/derefInLoop1_false-valid-deref.c [2018-11-18 12:50:28,031 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/data/5f3371766/7329f60d05a648bc871379ec762080c3/FLAG4742c61e6 [2018-11-18 12:50:28,043 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/data/5f3371766/7329f60d05a648bc871379ec762080c3 [2018-11-18 12:50:28,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:50:28,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:50:28,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:50:28,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:50:28,050 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:50:28,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c0c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28, skipping insertion in model container [2018-11-18 12:50:28,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:50:28,070 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:50:28,179 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:50:28,185 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:50:28,196 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:50:28,205 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:50:28,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28 WrapperNode [2018-11-18 12:50:28,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:50:28,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:50:28,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:50:28,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:50:28,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:50:28,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:50:28,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:50:28,223 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:50:28,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... [2018-11-18 12:50:28,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:50:28,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:50:28,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:50:28,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:50:28,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/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 [2018-11-18 12:50:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:50:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:50:28,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:50:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:50:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:50:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:50:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:50:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:50:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:50:28,412 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:50:28,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:50:28 BoogieIcfgContainer [2018-11-18 12:50:28,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:50:28,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:50:28,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:50:28,416 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:50:28,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:50:28" (1/3) ... [2018-11-18 12:50:28,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1e4e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:50:28, skipping insertion in model container [2018-11-18 12:50:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:50:28" (2/3) ... [2018-11-18 12:50:28,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1e4e47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:50:28, skipping insertion in model container [2018-11-18 12:50:28,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:50:28" (3/3) ... [2018-11-18 12:50:28,418 INFO L112 eAbstractionObserver]: Analyzing ICFG derefInLoop1_false-valid-deref.c [2018-11-18 12:50:28,424 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:50:28,428 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-18 12:50:28,440 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-18 12:50:28,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:50:28,462 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 12:50:28,462 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:50:28,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:50:28,463 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:50:28,463 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:50:28,463 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:50:28,463 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:50:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-18 12:50:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 12:50:28,479 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:50:28,480 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:50:28,481 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-18 12:50:28,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:50:28,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1441260535, now seen corresponding path program 1 times [2018-11-18 12:50:28,486 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:50:28,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:28,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:50:28,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:28,515 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:50:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:50:28,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:50:28,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:50:28,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:50:28,557 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:50:28,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:50:28,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:50:28,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:50:28,570 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-18 12:50:28,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:50:28,583 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 12:50:28,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:50:28,584 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-18 12:50:28,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:50:28,590 INFO L225 Difference]: With dead ends: 19 [2018-11-18 12:50:28,590 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 12:50:28,591 INFO L604 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 [2018-11-18 12:50:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 12:50:28,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 12:50:28,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 12:50:28,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 12:50:28,611 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 9 [2018-11-18 12:50:28,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:50:28,611 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 12:50:28,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:50:28,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 12:50:28,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 12:50:28,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:50:28,612 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:50:28,612 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-18 12:50:28,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:50:28,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1728881770, now seen corresponding path program 1 times [2018-11-18 12:50:28,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:50:28,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:28,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:50:28,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:28,614 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:50:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:50:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:50:28,664 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:50:28,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:50:28,665 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:50:28,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:50:28,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:50:28,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:50:28,666 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-11-18 12:50:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:50:28,701 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-11-18 12:50:28,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:50:28,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 12:50:28,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:50:28,702 INFO L225 Difference]: With dead ends: 20 [2018-11-18 12:50:28,702 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 12:50:28,703 INFO L604 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 [2018-11-18 12:50:28,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 12:50:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-18 12:50:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 12:50:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 12:50:28,705 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 10 [2018-11-18 12:50:28,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:50:28,705 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 12:50:28,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:50:28,705 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-18 12:50:28,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:50:28,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:50:28,706 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:50:28,706 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-18 12:50:28,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:50:28,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1688682998, now seen corresponding path program 1 times [2018-11-18 12:50:28,706 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:50:28,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:28,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:50:28,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:28,707 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:50:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:50:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:50:28,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 12:50:28,738 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 12:50:28,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-18 12:50:28,740 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [17], [24], [28], [30], [31], [32], [33] [2018-11-18 12:50:28,762 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 12:50:28,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 12:50:28,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 12:50:28,860 INFO L272 AbstractInterpreter]: Visited 11 different actions 15 times. Merged at 3 different actions 3 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. [2018-11-18 12:50:28,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:50:28,864 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 12:50:28,905 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 88.73% of their original sizes. [2018-11-18 12:50:28,905 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 12:50:28,932 INFO L415 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2018-11-18 12:50:28,932 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 12:50:28,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 12:50:28,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-11-18 12:50:28,933 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:50:28,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 12:50:28,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 12:50:28,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 12:50:28,934 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2018-11-18 12:50:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:50:29,013 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-11-18 12:50:29,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 12:50:29,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-11-18 12:50:29,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:50:29,013 INFO L225 Difference]: With dead ends: 28 [2018-11-18 12:50:29,013 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 12:50:29,014 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-18 12:50:29,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 12:50:29,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2018-11-18 12:50:29,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-18 12:50:29,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-18 12:50:29,016 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2018-11-18 12:50:29,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:50:29,016 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-18 12:50:29,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 12:50:29,016 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-18 12:50:29,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 12:50:29,016 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:50:29,016 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:50:29,017 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION]=== [2018-11-18 12:50:29,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:50:29,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1688684632, now seen corresponding path program 1 times [2018-11-18 12:50:29,017 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:50:29,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:29,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:50:29,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:50:29,018 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:50:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:50:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 12:50:29,055 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 12:50:29,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:50:29 BoogieIcfgContainer [2018-11-18 12:50:29,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:50:29,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:50:29,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:50:29,068 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:50:29,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:50:28" (3/4) ... [2018-11-18 12:50:29,070 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 12:50:29,097 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_08b135dd-0d9d-4756-8846-4f1d6c180670/bin-2019/utaipan/witness.graphml [2018-11-18 12:50:29,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:50:29,098 INFO L168 Benchmark]: Toolchain (without parser) took 1051.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -102.0 MB). Peak memory consumption was 36.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:50:29,098 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:50:29,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:50:29,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.33 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:50:29,100 INFO L168 Benchmark]: Boogie Preprocessor took 13.46 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:50:29,100 INFO L168 Benchmark]: RCFGBuilder took 175.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-18 12:50:29,100 INFO L168 Benchmark]: TraceAbstraction took 654.76 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: 60.2 MB). Peak memory consumption was 60.2 MB. Max. memory is 11.5 GB. [2018-11-18 12:50:29,101 INFO L168 Benchmark]: Witness Printer took 29.13 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 12:50:29,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.69 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.33 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.46 ms. Allocated memory is still 1.0 GB. Free memory is still 945.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 175.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 654.76 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: 60.2 MB). Peak memory consumption was 60.2 MB. Max. memory is 11.5 GB. * Witness Printer took 29.13 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: 2.7 MB). Peak memory consumption was 2.7 MB. 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] FCALL int a[10]; VAL [a={41:0}, i=0] [L5] COND TRUE i == 0 [L6] p = a VAL [a={41:0}, i=0, p={41:0}] [L3] i++ [L3] COND TRUE i < 2 [L4] FCALL int a[10]; VAL [a={43:0}, i=1, p={41:0}] [L5] COND FALSE !(i == 0) VAL [a={43:0}, i=1, p={41:0}] [L8] FCALL p[0] = 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 3 error locations. UNSAFE Result, 0.6s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 47 SDtfs, 13 SDslu, 27 SDs, 0 SdLazy, 15 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0.8861416361416361 AbsIntWeakeningRatio, 0.9230769230769231 AbsIntAvgWeakeningVarsNumRemoved, 1.0 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...