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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-10 16:57:52,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-10 16:57:52,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-10 16:57:52,887 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-10 16:57:52,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-10 16:57:52,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-10 16:57:52,888 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-10 16:57:52,890 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-10 16:57:52,891 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-10 16:57:52,892 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-10 16:57:52,893 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-10 16:57:52,893 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-10 16:57:52,894 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-10 16:57:52,895 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-10 16:57:52,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-10 16:57:52,897 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-10 16:57:52,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-10 16:57:52,900 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-10 16:57:52,901 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-10 16:57:52,902 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-10 16:57:52,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-04-10 16:57:52,909 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-10 16:57:52,909 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-10 16:57:52,909 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-04-10 16:57:52,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-10 16:57:52,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-10 16:57:52,928 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-10 16:57:52,929 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-10 16:57:52,929 INFO L133 SettingsManager]: * Use SBE=true [2018-04-10 16:57:52,929 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-10 16:57:52,929 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-10 16:57:52,929 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-10 16:57:52,929 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-10 16:57:52,930 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-10 16:57:52,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-10 16:57:52,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-10 16:57:52,931 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-10 16:57:52,931 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-04-10 16:57:52,931 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-04-10 16:57:52,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-10 16:57:52,962 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-10 16:57:52,971 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-10 16:57:52,974 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-10 16:57:52,976 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-10 16:57:52,976 INFO L276 PluginConnector]: CDTParser initialized [2018-04-10 16:57:52,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i [2018-04-10 16:57:53,287 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGae3a0e936 [2018-04-10 16:57:53,369 INFO L287 CDTParser]: IsIndexed: true [2018-04-10 16:57:53,369 INFO L288 CDTParser]: Found 1 translation units. [2018-04-10 16:57:53,370 INFO L168 CDTParser]: Scanning diff_usafe_false-valid-deref.i [2018-04-10 16:57:53,370 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-10 16:57:53,371 INFO L215 ultiparseSymbolTable]: [2018-04-10 16:57:53,371 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-10 16:57:53,371 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in diff_usafe_false-valid-deref.i [2018-04-10 16:57:53,371 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fdiff_usafe_false_valid_deref_i__diff ('diff') in diff_usafe_false-valid-deref.i [2018-04-10 16:57:53,371 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-10 16:57:53,371 INFO L233 ultiparseSymbolTable]: [2018-04-10 16:57:53,385 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGae3a0e936 [2018-04-10 16:57:53,388 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-10 16:57:53,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-10 16:57:53,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-10 16:57:53,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-10 16:57:53,396 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-10 16:57:53,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcb2fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53, skipping insertion in model container [2018-04-10 16:57:53,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,412 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 16:57:53,424 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-10 16:57:53,545 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 16:57:53,568 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-10 16:57:53,572 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 9 non ball SCCs. Number of states in SCCs 9. [2018-04-10 16:57:53,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53 WrapperNode [2018-04-10 16:57:53,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-10 16:57:53,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-10 16:57:53,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-10 16:57:53,580 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-10 16:57:53,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... [2018-04-10 16:57:53,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-10 16:57:53,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-10 16:57:53,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-10 16:57:53,610 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-10 16:57:53,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-04-10 16:57:53,649 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-10 16:57:53,649 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-10 16:57:53,649 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fdiff_usafe_false_valid_deref_i__diff [2018-04-10 16:57:53,649 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-10 16:57:53,649 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fdiff_usafe_false_valid_deref_i__diff [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-10 16:57:53,650 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-10 16:57:53,651 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-10 16:57:53,871 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-10 16:57:53,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 04:57:53 BoogieIcfgContainer [2018-04-10 16:57:53,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-10 16:57:53,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-10 16:57:53,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-10 16:57:53,874 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-10 16:57:53,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.04 04:57:53" (1/3) ... [2018-04-10 16:57:53,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a071c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 04:57:53, skipping insertion in model container [2018-04-10 16:57:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.04 04:57:53" (2/3) ... [2018-04-10 16:57:53,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a071c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.04 04:57:53, skipping insertion in model container [2018-04-10 16:57:53,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.04 04:57:53" (3/3) ... [2018-04-10 16:57:53,876 INFO L107 eAbstractionObserver]: Analyzing ICFG diff_usafe_false-valid-deref.i [2018-04-10 16:57:53,883 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-04-10 16:57:53,888 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-04-10 16:57:53,911 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-10 16:57:53,911 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-10 16:57:53,912 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-10 16:57:53,912 INFO L371 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-04-10 16:57:53,912 INFO L372 AbstractCegarLoop]: Backedges is CANONICAL [2018-04-10 16:57:53,912 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-10 16:57:53,912 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-10 16:57:53,912 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-10 16:57:53,912 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-10 16:57:53,912 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-10 16:57:53,919 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-04-10 16:57:53,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 16:57:53,925 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 16:57:53,925 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 16:57:53,926 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]=== [2018-04-10 16:57:53,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1618604079, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/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 [2018-04-10 16:57:53,937 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 16:57:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 16:57:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 16:57:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-10 16:57:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 16:57:54,043 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-10 16:57:54,043 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-10 16:57:54,043 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-04-10 16:57:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 16:57:54,044 INFO L182 omatonBuilderFactory]: Interpolants [48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 49#(= |#memory_int| |old(#memory_int)|), 39#true, 40#false] [2018-04-10 16:57:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-10 16:57:54,045 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-10 16:57:54,052 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-10 16:57:54,052 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-10 16:57:54,054 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2018-04-10 16:57:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-10 16:57:54,184 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2018-04-10 16:57:54,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-10 16:57:54,186 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-04-10 16:57:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-10 16:57:54,194 INFO L225 Difference]: With dead ends: 59 [2018-04-10 16:57:54,194 INFO L226 Difference]: Without dead ends: 47 [2018-04-10 16:57:54,196 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-10 16:57:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-04-10 16:57:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2018-04-10 16:57:54,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-04-10 16:57:54,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2018-04-10 16:57:54,218 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 13 [2018-04-10 16:57:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-10 16:57:54,218 INFO L459 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2018-04-10 16:57:54,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-10 16:57:54,218 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2018-04-10 16:57:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-04-10 16:57:54,219 INFO L347 BasicCegarLoop]: Found error trace [2018-04-10 16:57:54,219 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-10 16:57:54,219 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]=== [2018-04-10 16:57:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1573863412, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/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 [2018-04-10 16:57:54,224 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-10 16:57:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 16:57:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-04-10 16:57:54,285 INFO L421 BasicCegarLoop]: Counterexample might be feasible [2018-04-10 16:57:54,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.04 04:57:54 BoogieIcfgContainer [2018-04-10 16:57:54,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-10 16:57:54,306 INFO L168 Benchmark]: Toolchain (without parser) took 917.19 ms. Allocated memory was 395.8 MB in the beginning and 596.6 MB in the end (delta: 200.8 MB). Free memory was 335.1 MB in the beginning and 509.4 MB in the end (delta: -174.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:54,307 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 395.8 MB. Free memory is still 354.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-10 16:57:54,307 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.69 ms. Allocated memory is still 395.8 MB. Free memory was 335.1 MB in the beginning and 325.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:54,308 INFO L168 Benchmark]: Boogie Preprocessor took 28.87 ms. Allocated memory is still 395.8 MB. Free memory was 325.8 MB in the beginning and 323.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:54,308 INFO L168 Benchmark]: RCFGBuilder took 262.14 ms. Allocated memory was 395.8 MB in the beginning and 596.6 MB in the end (delta: 200.8 MB). Free memory was 323.1 MB in the beginning and 560.0 MB in the end (delta: -236.9 MB). Peak memory consumption was 27.4 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:54,309 INFO L168 Benchmark]: TraceAbstraction took 433.18 ms. Allocated memory is still 596.6 MB. Free memory was 560.0 MB in the beginning and 509.4 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 MB. Max. memory is 5.3 GB. [2018-04-10 16:57:54,311 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 395.8 MB. Free memory is still 354.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 189.69 ms. Allocated memory is still 395.8 MB. Free memory was 335.1 MB in the beginning and 325.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.87 ms. Allocated memory is still 395.8 MB. Free memory was 325.8 MB in the beginning and 323.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 262.14 ms. Allocated memory was 395.8 MB in the beginning and 596.6 MB in the end (delta: 200.8 MB). Free memory was 323.1 MB in the beginning and 560.0 MB in the end (delta: -236.9 MB). Peak memory consumption was 27.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 433.18 ms. Allocated memory is still 596.6 MB. Free memory was 560.0 MB in the beginning and 509.4 MB in the end (delta: 50.6 MB). Peak memory consumption was 50.6 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(); [L29] int *B; [L30] int Blen = __VERIFIER_nondet_int(); [L31] int *D; VAL [Alen=1, Blen=1] [L32] CALL diff(A, Alen, B, Blen, D) VAL [\old(Alen)=1, \old(Blen)=1, A={0:6}, B={8:10}, D={9:7}] [L4] int k = 0; [L5] int i = 0; [L6] int l1 = Alen; [L7] int l2 = Blen; [L8] int found; VAL [\old(Alen)=1, \old(Blen)=1, A={0:6}, A={0:6}, Alen=1, B={8:10}, B={8:10}, Blen=1, D={9:7}, D={9:7}, i=0, k=0, l1=1, l2=1] [L9] COND TRUE i < l1 [L10] int j = 0; [L11] found = 0 VAL [\old(Alen)=1, \old(Blen)=1, A={0:6}, A={0:6}, Alen=1, B={8:10}, B={8:10}, Blen=1, D={9:7}, D={9:7}, 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={0:6}, A={0:6}, Alen=1, B={8:10}, B={8:10}, Blen=1, D={9:7}, D={9:7}, 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, 36 locations, 9 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 82 SDslu, 3 SDs, 0 SdLazy, 43 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 19 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-10_16-57-54-319.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/diff_usafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-10_16-57-54-319.csv Received shutdown request...