./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/diff_usafe.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/diff_usafe.c -s /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36668c3ad6b05a2dc08891e0da2e8018cdda58e2 ........................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:13:03,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:13:03,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:13:03,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:13:03,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:13:03,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:13:03,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:13:03,679 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:13:03,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:13:03,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:13:03,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:13:03,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:13:03,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:13:03,683 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:13:03,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:13:03,685 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:13:03,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:13:03,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:13:03,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:13:03,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:13:03,690 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:13:03,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:13:03,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:13:03,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:13:03,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:13:03,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:13:03,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:13:03,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:13:03,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:13:03,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:13:03,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:13:03,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:13:03,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:13:03,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:13:03,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:13:03,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:13:03,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:13:03,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:13:03,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:13:03,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:13:03,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:13:03,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 18:13:03,708 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:13:03,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:13:03,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:13:03,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:13:03,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:13:03,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:13:03,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:13:03,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:13:03,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer 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 -> Automizer 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 -> 36668c3ad6b05a2dc08891e0da2e8018cdda58e2 [2019-12-07 18:13:03,810 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:13:03,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:13:03,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:13:03,824 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:13:03,825 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:13:03,825 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/diff_usafe.c [2019-12-07 18:13:03,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/data/279e2c2a6/a7c8bf78bac64f619d07ef6e06ae236e/FLAG4ef6d9366 [2019-12-07 18:13:04,267 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:13:04,267 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/sv-benchmarks/c/array-memsafety/diff_usafe.c [2019-12-07 18:13:04,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/data/279e2c2a6/a7c8bf78bac64f619d07ef6e06ae236e/FLAG4ef6d9366 [2019-12-07 18:13:04,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/data/279e2c2a6/a7c8bf78bac64f619d07ef6e06ae236e [2019-12-07 18:13:04,281 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:13:04,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:13:04,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:13:04,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:13:04,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:13:04,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f08bf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04, skipping insertion in model container [2019-12-07 18:13:04,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:13:04,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:13:04,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:13:04,442 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:13:04,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:13:04,466 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:13:04,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04 WrapperNode [2019-12-07 18:13:04,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:13:04,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:13:04,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:13:04,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:13:04,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... [2019-12-07 18:13:04,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:13:04,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:13:04,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:13:04,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:13:04,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:13:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:13:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:13:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure diff [2019-12-07 18:13:04,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:13:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:13:04,533 INFO L130 BoogieDeclarations]: Found specification of procedure diff [2019-12-07 18:13:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:13:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:13:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:13:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:13:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:13:04,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:13:04,683 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:13:04,683 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 18:13:04,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:13:04 BoogieIcfgContainer [2019-12-07 18:13:04,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:13:04,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:13:04,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:13:04,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:13:04,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:13:04" (1/3) ... [2019-12-07 18:13:04,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d2a1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:13:04, skipping insertion in model container [2019-12-07 18:13:04,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:13:04" (2/3) ... [2019-12-07 18:13:04,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60d2a1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:13:04, skipping insertion in model container [2019-12-07 18:13:04,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:13:04" (3/3) ... [2019-12-07 18:13:04,688 INFO L109 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2019-12-07 18:13:04,695 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:13:04,699 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2019-12-07 18:13:04,706 INFO L249 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2019-12-07 18:13:04,718 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:13:04,718 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:13:04,718 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:13:04,718 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:13:04,718 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:13:04,718 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:13:04,719 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:13:04,719 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:13:04,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-12-07 18:13:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:13:04,734 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:13:04,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:13:04,735 INFO L410 AbstractCegarLoop]: === Iteration 1 === [diffErr2REQUIRES_VIOLATION, diffErr3REQUIRES_VIOLATION, diffErr4REQUIRES_VIOLATION, diffErr5REQUIRES_VIOLATION, diffErr0REQUIRES_VIOLATION, diffErr1REQUIRES_VIOLATION, diffErr7REQUIRES_VIOLATION, diffErr6REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2019-12-07 18:13:04,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:13:04,741 INFO L82 PathProgramCache]: Analyzing trace with hash -633667021, now seen corresponding path program 1 times [2019-12-07 18:13:04,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:13:04,747 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587470351] [2019-12-07 18:13:04,747 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:13:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:13:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:13:04,847 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:13:04,848 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:13:04,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:13:04 BoogieIcfgContainer [2019-12-07 18:13:04,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:13:04,866 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:13:04,866 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:13:04,866 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:13:04,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:13:04" (3/4) ... [2019-12-07 18:13:04,868 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:13:04,899 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_94a5d36b-53ce-4897-af34-ffb8850b3c1c/bin/uautomizer/witness.graphml [2019-12-07 18:13:04,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:13:04,900 INFO L168 Benchmark]: Toolchain (without parser) took 618.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 946.0 MB in the beginning and 1.0 GB in the end (delta: -101.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:13:04,901 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:13:04,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:13:04,902 INFO L168 Benchmark]: Boogie Preprocessor took 25.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:13:04,902 INFO L168 Benchmark]: RCFGBuilder took 190.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:13:04,902 INFO L168 Benchmark]: TraceAbstraction took 181.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:13:04,903 INFO L168 Benchmark]: Witness Printer took 33.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:13:04,905 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 184.63 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -146.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.91 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 190.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 181.26 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 33.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; VAL [Alen=2, Blen=3] [L35] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, B={8:10}, D={5:9}] [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, A={11:7}, Alen=2, B={8:10}, B={8:10}, Blen=3, D={5:9}, D={5:9}, i=0, k=0, l1=2, l2=3] [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, A={11:7}, Alen=2, B={8:10}, B={8:10}, Blen=3, D={5:9}, D={5:9}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L14] COND TRUE j < l2 && !found VAL [\old(Alen)=2, \old(Blen)=3, A={11:7}, A={11:7}, Alen=2, B={8:10}, B={8:10}, Blen=3, D={5:9}, D={5:9}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L15] A[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 34 locations, 9 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...