./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/loops/invert_string-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/invert_string-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 01c8dcbf548ac0eef8cebe655947adbb13d26f9a ............................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:39:57,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:39:57,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:39:57,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:39:57,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:39:57,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:39:57,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:39:57,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:39:57,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:39:57,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:39:57,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:39:57,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:39:57,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:39:57,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:39:57,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:39:57,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:39:57,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:39:57,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:39:57,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:39:57,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:39:57,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:39:57,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:39:57,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:39:57,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:39:57,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:39:57,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:39:57,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:39:57,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:39:57,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:39:57,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:39:57,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:39:57,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:39:57,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:39:57,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:39:57,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:39:57,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:39:57,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:39:57,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:39:57,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:39:57,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:39:57,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:39:57,166 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:39:57,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:39:57,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:39:57,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:39:57,181 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:39:57,181 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:39:57,181 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:39:57,181 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:39:57,181 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:39:57,182 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:39:57,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:39:57,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:39:57,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:39:57,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:39:57,183 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:39:57,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:39:57,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:39:57,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:39:57,183 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:39:57,184 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:39:57,184 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:39:57,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:39:57,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:39:57,184 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:39:57,185 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:39:57,185 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:39:57,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:39:57,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:39:57,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:39:57,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:39:57,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:39:57,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:39:57,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:39:57,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:39:57,187 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:39:57,188 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:39:57,188 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:39:57,188 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01c8dcbf548ac0eef8cebe655947adbb13d26f9a [2019-11-26 02:39:57,372 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:39:57,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:39:57,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:39:57,386 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:39:57,387 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:39:57,387 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/../../sv-benchmarks/c/loops/invert_string-2.c [2019-11-26 02:39:57,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/data/03730910e/4231bb2112834bfcb75e0727d5c7fb5a/FLAGeb3bc07ef [2019-11-26 02:39:57,848 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:39:57,848 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/sv-benchmarks/c/loops/invert_string-2.c [2019-11-26 02:39:57,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/data/03730910e/4231bb2112834bfcb75e0727d5c7fb5a/FLAGeb3bc07ef [2019-11-26 02:39:58,223 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/data/03730910e/4231bb2112834bfcb75e0727d5c7fb5a [2019-11-26 02:39:58,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:39:58,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:39:58,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:58,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:39:58,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:39:58,239 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e292ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58, skipping insertion in model container [2019-11-26 02:39:58,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:39:58,260 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:39:58,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:58,441 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:39:58,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:39:58,566 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:39:58,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58 WrapperNode [2019-11-26 02:39:58,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:39:58,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:58,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:39:58,567 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:39:58,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:39:58,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:39:58,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:39:58,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:39:58,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... [2019-11-26 02:39:58,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:39:58,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:39:58,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:39:58,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:39:58,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-26 02:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:39:58,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-26 02:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:39:58,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:39:59,219 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:39:59,219 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-26 02:39:59,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:59 BoogieIcfgContainer [2019-11-26 02:39:59,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:39:59,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:39:59,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:39:59,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:39:59,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:39:58" (1/3) ... [2019-11-26 02:39:59,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5437afab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:59, skipping insertion in model container [2019-11-26 02:39:59,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:39:58" (2/3) ... [2019-11-26 02:39:59,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5437afab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:39:59, skipping insertion in model container [2019-11-26 02:39:59,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:59" (3/3) ... [2019-11-26 02:39:59,227 INFO L109 eAbstractionObserver]: Analyzing ICFG invert_string-2.c [2019-11-26 02:39:59,237 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:39:59,243 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-11-26 02:39:59,252 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-11-26 02:39:59,269 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:39:59,269 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:39:59,269 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:39:59,269 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:39:59,270 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:39:59,270 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:39:59,270 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:39:59,270 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:39:59,283 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-26 02:39:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:39:59,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:59,289 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:39:59,289 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:39:59,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:59,294 INFO L82 PathProgramCache]: Analyzing trace with hash 926022, now seen corresponding path program 1 times [2019-11-26 02:39:59,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:59,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1237353085] [2019-11-26 02:39:59,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:59,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-26 02:39:59,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:39:59,388 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:39:59,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1237353085] [2019-11-26 02:39:59,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:59,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:39:59,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977019002] [2019-11-26 02:39:59,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:39:59,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:59,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:39:59,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:39:59,407 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2019-11-26 02:39:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:59,418 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2019-11-26 02:39:59,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:39:59,419 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 4 [2019-11-26 02:39:59,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:59,426 INFO L225 Difference]: With dead ends: 39 [2019-11-26 02:39:59,426 INFO L226 Difference]: Without dead ends: 36 [2019-11-26 02:39:59,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:39:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-26 02:39:59,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-11-26 02:39:59,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-26 02:39:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-11-26 02:39:59,455 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 4 [2019-11-26 02:39:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:59,456 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-11-26 02:39:59,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:39:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-11-26 02:39:59,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:39:59,456 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:59,456 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:39:59,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:59,665 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:39:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:39:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash 925712, now seen corresponding path program 1 times [2019-11-26 02:39:59,666 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:39:59,666 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [317244253] [2019-11-26 02:39:59,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:39:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:39:59,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:39:59,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:39:59,794 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-26 02:39:59,794 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-26 02:39:59,795 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:39:59,803 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:39:59,805 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-26 02:39:59,806 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:11 [2019-11-26 02:39:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:39:59,828 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:39:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:39:59,832 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [317244253] [2019-11-26 02:39:59,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:39:59,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:39:59,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418997236] [2019-11-26 02:39:59,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:39:59,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:39:59,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:39:59,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:39:59,835 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2019-11-26 02:39:59,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:39:59,936 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2019-11-26 02:39:59,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:39:59,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-11-26 02:39:59,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:39:59,937 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:39:59,937 INFO L226 Difference]: Without dead ends: 32 [2019-11-26 02:39:59,938 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:39:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-26 02:39:59,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2019-11-26 02:39:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-26 02:39:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-11-26 02:39:59,942 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 4 [2019-11-26 02:39:59,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:39:59,942 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2019-11-26 02:39:59,942 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:39:59,943 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2019-11-26 02:39:59,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 02:39:59,943 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:39:59,943 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 02:40:00,143 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:00,144 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION]=== [2019-11-26 02:40:00,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:40:00,144 INFO L82 PathProgramCache]: Analyzing trace with hash 925713, now seen corresponding path program 1 times [2019-11-26 02:40:00,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:40:00,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [255431947] [2019-11-26 02:40:00,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:40:00,288 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-11-26 02:40:00,290 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:40:00,497 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:40:00,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:40:00 BoogieIcfgContainer [2019-11-26 02:40:00,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:40:00,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:40:00,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:40:00,514 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:40:00,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:39:59" (3/4) ... [2019-11-26 02:40:00,516 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:40:00,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6e00614b-21c9-4335-8aea-b21b110b249c/bin/utaipan/witness.graphml [2019-11-26 02:40:00,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:40:00,553 INFO L168 Benchmark]: Toolchain (without parser) took 2325.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -117.2 MB). Peak memory consumption was 45.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:00,553 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:00,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:00,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:00,555 INFO L168 Benchmark]: Boogie Preprocessor took 36.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:40:00,556 INFO L168 Benchmark]: RCFGBuilder took 578.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:00,556 INFO L168 Benchmark]: TraceAbstraction took 1291.48 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: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:00,557 INFO L168 Benchmark]: Witness Printer took 37.56 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:40:00,561 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 339.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 578.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1291.48 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: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. * Witness Printer took 37.56 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 21]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] int MAX = __VERIFIER_nondet_uint(); [L14] char str1[MAX], str2[MAX]; [L15] int cont, i, j; [L16] cont = 0 [L18] i=0 [L18] COND FALSE !(i