java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-453dfda-m [2018-04-09 19:45:07,979 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-09 19:45:07,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-09 19:45:07,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-09 19:45:07,995 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-09 19:45:07,996 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-09 19:45:07,997 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-09 19:45:07,999 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-09 19:45:08,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-09 19:45:08,001 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-09 19:45:08,002 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-09 19:45:08,002 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-09 19:45:08,003 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-09 19:45:08,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-09 19:45:08,005 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-09 19:45:08,007 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-09 19:45:08,009 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-09 19:45:08,011 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-09 19:45:08,013 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-09 19:45:08,014 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-09 19:45:08,016 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-09 19:45:08,016 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-09 19:45:08,017 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-09 19:45:08,018 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-09 19:45:08,018 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-09 19:45:08,020 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-09 19:45:08,020 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-09 19:45:08,021 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-09 19:45:08,022 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-09 19:45:08,022 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-09 19:45:08,023 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-09 19:45:08,023 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-09 19:45:08,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-09 19:45:08,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-09 19:45:08,050 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-09 19:45:08,050 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-09 19:45:08,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-09 19:45:08,051 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-09 19:45:08,051 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-09 19:45:08,051 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-09 19:45:08,051 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-04-09 19:45:08,052 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-09 19:45:08,052 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-09 19:45:08,052 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-09 19:45:08,053 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-09 19:45:08,053 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-09 19:45:08,053 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-09 19:45:08,053 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-09 19:45:08,053 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-09 19:45:08,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-09 19:45:08,054 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-09 19:45:08,054 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-09 19:45:08,054 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-09 19:45:08,054 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-09 19:45:08,054 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-09 19:45:08,055 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-09 19:45:08,055 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-09 19:45:08,055 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-09 19:45:08,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-09 19:45:08,056 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-09 19:45:08,056 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-09 19:45:08,056 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-09 19:45:08,056 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-09 19:45:08,056 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-09 19:45:08,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 19:45:08,057 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-09 19:45:08,058 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-09 19:45:08,058 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-09 19:45:08,058 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-09 19:45:08,058 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-09 19:45:08,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-09 19:45:08,108 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-09 19:45:08,113 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-09 19:45:08,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-09 19:45:08,115 INFO L276 PluginConnector]: CDTParser initialized [2018-04-09 19:45:08,116 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i [2018-04-09 19:45:08,449 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG356600541 [2018-04-09 19:45:08,565 INFO L287 CDTParser]: IsIndexed: true [2018-04-09 19:45:08,565 INFO L288 CDTParser]: Found 1 translation units. [2018-04-09 19:45:08,566 INFO L168 CDTParser]: Scanning diff_usafe_false-valid-deref.i [2018-04-09 19:45:08,567 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-09 19:45:08,568 INFO L215 ultiparseSymbolTable]: [2018-04-09 19:45:08,568 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-09 19:45:08,568 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in diff_usafe_false-valid-deref.i [2018-04-09 19:45:08,568 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fdiff_usafe_false_valid_deref_i__diff ('diff') in diff_usafe_false-valid-deref.i [2018-04-09 19:45:08,568 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-09 19:45:08,568 INFO L233 ultiparseSymbolTable]: [2018-04-09 19:45:08,746 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG356600541 [2018-04-09 19:45:08,751 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-09 19:45:08,754 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-09 19:45:08,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-09 19:45:08,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-09 19:45:08,762 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-09 19:45:08,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:08,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f0272d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08, skipping insertion in model container [2018-04-09 19:45:08,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:08,786 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-09 19:45:08,798 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-09 19:45:08,932 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-09 19:45:08,957 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-09 19:45:08,962 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-09 19:45:08,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08 WrapperNode [2018-04-09 19:45:08,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-09 19:45:08,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-09 19:45:08,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-09 19:45:08,973 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-09 19:45:08,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:08,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:08,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:08,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:08,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:09,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:09,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... [2018-04-09 19:45:09,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-09 19:45:09,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-09 19:45:09,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-09 19:45:09,008 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-09 19:45:09,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-04-09 19:45:09,077 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-09 19:45:09,077 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-09 19:45:09,077 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fdiff_usafe_false_valid_deref_i__diff [2018-04-09 19:45:09,077 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-09 19:45:09,077 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-09 19:45:09,077 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fdiff_usafe_false_valid_deref_i__diff [2018-04-09 19:45:09,077 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-09 19:45:09,078 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-09 19:45:09,078 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-09 19:45:09,078 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-09 19:45:09,078 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-09 19:45:09,078 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-09 19:45:09,078 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-09 19:45:09,378 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-09 19:45:09,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.04 07:45:09 BoogieIcfgContainer [2018-04-09 19:45:09,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-09 19:45:09,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-09 19:45:09,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-09 19:45:09,383 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-09 19:45:09,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.04 07:45:08" (1/3) ... [2018-04-09 19:45:09,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739ef0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.04 07:45:09, skipping insertion in model container [2018-04-09 19:45:09,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.04 07:45:08" (2/3) ... [2018-04-09 19:45:09,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739ef0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.04 07:45:09, skipping insertion in model container [2018-04-09 19:45:09,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.04 07:45:09" (3/3) ... [2018-04-09 19:45:09,388 INFO L107 eAbstractionObserver]: Analyzing ICFG diff_usafe_false-valid-deref.i [2018-04-09 19:45:09,395 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-09 19:45:09,404 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-04-09 19:45:09,445 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-09 19:45:09,446 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-09 19:45:09,446 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-09 19:45:09,446 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-09 19:45:09,447 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-09 19:45:09,447 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-09 19:45:09,447 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-09 19:45:09,447 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-09 19:45:09,447 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-09 19:45:09,448 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-09 19:45:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-04-09 19:45:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-09 19:45:09,470 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 19:45:09,471 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 19:45:09,471 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr5RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr3RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr1RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr7RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr2RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr6RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr4RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr0RequiresViolation, mainErr0EnsuresViolationMEMORY_LEAK]=== [2018-04-09 19:45:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash 38396996, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 19:45:09,490 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 19:45:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-09 19:45:09,537 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-09 19:45:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 19:45:09,557 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-09 19:45:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-09 19:45:09,618 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-09 19:45:09,618 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-09 19:45:09,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-09 19:45:09,632 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-09 19:45:09,633 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-09 19:45:09,635 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-04-09 19:45:09,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-09 19:45:09,653 INFO L93 Difference]: Finished difference Result 111 states and 122 transitions. [2018-04-09 19:45:09,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-09 19:45:09,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31 [2018-04-09 19:45:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-09 19:45:09,662 INFO L225 Difference]: With dead ends: 111 [2018-04-09 19:45:09,662 INFO L226 Difference]: Without dead ends: 61 [2018-04-09 19:45:09,665 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-09 19:45:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-04-09 19:45:09,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-04-09 19:45:09,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-04-09 19:45:09,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2018-04-09 19:45:09,699 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 31 [2018-04-09 19:45:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-09 19:45:09,700 INFO L459 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2018-04-09 19:45:09,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-09 19:45:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2018-04-09 19:45:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-04-09 19:45:09,701 INFO L347 BasicCegarLoop]: Found error trace [2018-04-09 19:45:09,702 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-09 19:45:09,702 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr5RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr3RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr1RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr7RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr2RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr6RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr4RequiresViolation, __U_MULTI_fdiff_usafe_false_valid_deref_i__diffErr0RequiresViolation, mainErr0EnsuresViolationMEMORY_LEAK]=== [2018-04-09 19:45:09,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1610659954, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-09 19:45:09,712 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-09 19:45:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-09 19:45:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-09 19:45:09,794 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-09 19:45:09,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.04 07:45:09 BoogieIcfgContainer [2018-04-09 19:45:09,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-09 19:45:09,841 INFO L168 Benchmark]: Toolchain (without parser) took 1088.75 ms. Allocated memory was 303.0 MB in the beginning and 458.2 MB in the end (delta: 155.2 MB). Free memory was 246.8 MB in the beginning and 383.8 MB in the end (delta: -137.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 5.3 GB. [2018-04-09 19:45:09,843 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 303.0 MB. Free memory is still 265.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-09 19:45:09,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.53 ms. Allocated memory is still 303.0 MB. Free memory was 246.8 MB in the beginning and 236.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-04-09 19:45:09,844 INFO L168 Benchmark]: Boogie Preprocessor took 34.93 ms. Allocated memory is still 303.0 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-09 19:45:09,844 INFO L168 Benchmark]: RCFGBuilder took 370.83 ms. Allocated memory was 303.0 MB in the beginning and 458.2 MB in the end (delta: 155.2 MB). Free memory was 234.8 MB in the beginning and 423.8 MB in the end (delta: -189.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 5.3 GB. [2018-04-09 19:45:09,845 INFO L168 Benchmark]: TraceAbstraction took 460.03 ms. Allocated memory is still 458.2 MB. Free memory was 423.8 MB in the beginning and 383.8 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 5.3 GB. [2018-04-09 19:45:09,848 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 303.0 MB. Free memory is still 265.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 217.53 ms. Allocated memory is still 303.0 MB. Free memory was 246.8 MB in the beginning and 236.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.93 ms. Allocated memory is still 303.0 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 370.83 ms. Allocated memory was 303.0 MB in the beginning and 458.2 MB in the end (delta: 155.2 MB). Free memory was 234.8 MB in the beginning and 423.8 MB in the end (delta: -189.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 460.03 ms. Allocated memory is still 458.2 MB. Free memory was 423.8 MB in the beginning and 383.8 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] int *A; [L28] int Alen = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, Alen=1] [L29] int *B; VAL [Alen=1] [L30] int Blen = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, Alen=1, Blen=1] [L31] int *D; VAL [Alen=1, Blen=1] [L32] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, B={10:12}, D={11:9}] [L4] int k = 0; VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, k=0] [L5] int i = 0; VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, i=0, k=0] [L6] int l1 = Alen; VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, i=0, k=0, l1=1] [L7] int l2 = Blen; VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, i=0, k=0, l1=1, l2=1] [L8] int found; VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, i=0, k=0, l1=1, l2=1] [L9] COND TRUE i < l1 VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, i=0, k=0, l1=1, l2=1] [L10] int j = 0; VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, i=0, j=0, k=0, l1=1, l2=1] [L11] found = 0 VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, found=0, i=0, j=0, k=0, l1=1, l2=1] [L12] COND TRUE j < l2 && !found VAL [\old(Alen)=1, \old(Blen)=1, A={6:8}, A={6:8}, Alen=1, B={10:12}, B={10:12}, Blen=1, D={11:9}, D={11:9}, found=0, i=0, j=0, k=0, l1=1, l2=1] [L13] FCALL A[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 9 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1800 SizeOfPredicates, 0 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-09_19-45-09-858.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-09_19-45-09-858.csv Received shutdown request...