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/bubblesort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 20:20:49,892 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 20:20:49,893 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 20:20:49,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 20:20:49,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 20:20:49,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 20:20:49,904 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 20:20:49,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 20:20:49,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 20:20:49,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 20:20:49,908 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 20:20:49,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 20:20:49,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 20:20:49,910 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 20:20:49,911 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 20:20:49,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 20:20:49,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 20:20:49,916 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 20:20:49,917 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 20:20:49,918 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 20:20:49,919 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 20:20:49,920 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 20:20:49,920 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 20:20:49,921 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 20:20:49,921 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 20:20:49,922 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 20:20:49,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 20:20:49,923 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 20:20:49,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 20:20:49,923 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 20:20:49,924 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 20:20:49,924 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 [2018-02-04 20:20:49,947 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 20:20:49,947 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 20:20:49,948 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 20:20:49,948 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 20:20:49,949 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 20:20:49,949 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 20:20:49,950 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 20:20:49,950 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 20:20:49,950 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 20:20:49,950 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 20:20:49,950 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 20:20:49,950 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 20:20:49,950 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 20:20:49,951 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:20:49,951 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 20:20:49,951 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 20:20:49,951 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 20:20:49,951 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:20:49,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 20:20:49,987 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 20:20:49,989 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 20:20:49,990 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 20:20:49,991 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 20:20:49,991 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-02-04 20:20:50,070 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 20:20:50,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 20:20:50,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 20:20:50,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 20:20:50,078 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 20:20:50,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b9cbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50, skipping insertion in model container [2018-02-04 20:20:50,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,097 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:20:50,110 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:20:50,208 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:20:50,219 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:20:50,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50 WrapperNode [2018-02-04 20:20:50,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 20:20:50,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 20:20:50,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 20:20:50,224 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 20:20:50,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (1/1) ... [2018-02-04 20:20:50,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 20:20:50,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 20:20:50,248 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 20:20:50,248 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 20:20:50,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (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 [2018-02-04 20:20:50,282 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 20:20:50,282 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 20:20:50,282 INFO L136 BoogieDeclarations]: Found implementation of procedure bubbleSort [2018-02-04 20:20:50,282 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 20:20:50,282 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure bubbleSort [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 20:20:50,283 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 20:20:50,416 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 20:20:50,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:20:50 BoogieIcfgContainer [2018-02-04 20:20:50,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 20:20:50,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 20:20:50,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 20:20:50,419 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 20:20:50,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 08:20:50" (1/3) ... [2018-02-04 20:20:50,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb314d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:20:50, skipping insertion in model container [2018-02-04 20:20:50,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:20:50" (2/3) ... [2018-02-04 20:20:50,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb314d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:20:50, skipping insertion in model container [2018-02-04 20:20:50,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:20:50" (3/3) ... [2018-02-04 20:20:50,422 INFO L107 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe_false-valid-deref.i [2018-02-04 20:20:50,427 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 20:20:50,431 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-04 20:20:50,459 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 20:20:50,460 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 20:20:50,460 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 20:20:50,460 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 20:20:50,460 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 20:20:50,460 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 20:20:50,460 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 20:20:50,460 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 20:20:50,461 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 20:20:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-02-04 20:20:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:20:50,483 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:20:50,483 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:20:50,484 INFO L371 AbstractCegarLoop]: === Iteration 1 === [bubbleSortErr7RequiresViolation, bubbleSortErr11RequiresViolation, bubbleSortErr0RequiresViolation, bubbleSortErr3RequiresViolation, bubbleSortErr9RequiresViolation, bubbleSortErr1RequiresViolation, bubbleSortErr2RequiresViolation, bubbleSortErr8RequiresViolation, bubbleSortErr6RequiresViolation, bubbleSortErr10RequiresViolation, bubbleSortErr4RequiresViolation, bubbleSortErr5RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 20:20:50,488 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 [2018-02-04 20:20:50,498 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:20:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:20:50,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:20:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:20:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:20:50,598 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:20:50,599 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 20:20:50,599 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:20:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:20:50,600 INFO L182 omatonBuilderFactory]: Interpolants [55#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 56#(= |#memory_int| |old(#memory_int)|), 46#true, 47#false] [2018-02-04 20:20:50,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:20:50,601 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 20:20:50,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 20:20:50,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 20:20:50,614 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 4 states. [2018-02-04 20:20:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:20:50,766 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2018-02-04 20:20:50,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 20:20:50,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-02-04 20:20:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:20:50,776 INFO L225 Difference]: With dead ends: 70 [2018-02-04 20:20:50,777 INFO L226 Difference]: Without dead ends: 58 [2018-02-04 20:20:50,778 INFO L554 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 [2018-02-04 20:20:50,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-04 20:20:50,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 35. [2018-02-04 20:20:50,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-04 20:20:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-04 20:20:50,804 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 13 [2018-02-04 20:20:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:20:50,804 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-04 20:20:50,804 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 20:20:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-04 20:20:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:20:50,805 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:20:50,805 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:20:50,805 INFO L371 AbstractCegarLoop]: === Iteration 2 === [bubbleSortErr7RequiresViolation, bubbleSortErr11RequiresViolation, bubbleSortErr0RequiresViolation, bubbleSortErr3RequiresViolation, bubbleSortErr9RequiresViolation, bubbleSortErr1RequiresViolation, bubbleSortErr2RequiresViolation, bubbleSortErr8RequiresViolation, bubbleSortErr6RequiresViolation, bubbleSortErr10RequiresViolation, bubbleSortErr4RequiresViolation, bubbleSortErr5RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-04 20:20:50,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1573832596, 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 [2018-02-04 20:20:50,808 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:20:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 20:20:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 20:20:50,852 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 20:20:50,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 08:20:50 BoogieIcfgContainer [2018-02-04 20:20:50,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 20:20:50,870 INFO L168 Benchmark]: Toolchain (without parser) took 799.04 ms. Allocated memory is still 402.1 MB. Free memory was 360.1 MB in the beginning and 287.6 MB in the end (delta: 72.5 MB). Peak memory consumption was 72.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:20:50,871 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 402.1 MB. Free memory is still 365.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:20:50,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.79 ms. Allocated memory is still 402.1 MB. Free memory was 360.1 MB in the beginning and 352.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. [2018-02-04 20:20:50,871 INFO L168 Benchmark]: Boogie Preprocessor took 24.58 ms. Allocated memory is still 402.1 MB. Free memory was 352.0 MB in the beginning and 350.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 20:20:50,872 INFO L168 Benchmark]: RCFGBuilder took 168.77 ms. Allocated memory is still 402.1 MB. Free memory was 350.6 MB in the beginning and 332.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:20:50,872 INFO L168 Benchmark]: TraceAbstraction took 451.73 ms. Allocated memory is still 402.1 MB. Free memory was 332.0 MB in the beginning and 287.6 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:20:50,874 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 402.1 MB. Free memory is still 365.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 150.79 ms. Allocated memory is still 402.1 MB. Free memory was 360.1 MB in the beginning and 352.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.58 ms. Allocated memory is still 402.1 MB. Free memory was 352.0 MB in the beginning and 350.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 168.77 ms. Allocated memory is still 402.1 MB. Free memory was 350.6 MB in the beginning and 332.0 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 451.73 ms. Allocated memory is still 402.1 MB. Free memory was 332.0 MB in the beginning and 287.6 MB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L16] int* numbers; [L17] int array_size = __VERIFIER_nondet_int(); [L18] CALL bubbleSort(numbers, array_size) VAL [\old(array_size)=2, numbers={0:7}] [L4] int i, j, temp; [L5] i = (array_size - 1) VAL [\old(array_size)=2, array_size=2, i=1, numbers={0:7}, numbers={0:7}] [L5] COND TRUE i >= 0 [L6] j = 1 VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={0:7}, numbers={0:7}] [L6] COND TRUE j <= i VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={0:7}, numbers={0:7}] [L7] FCALL numbers[j-1] VAL [\old(array_size)=2, array_size=2, i=1, j=1, numbers={0:7}, numbers={0:7}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 13 error locations. UNSAFE Result, 0.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 94 SDslu, 3 SDs, 0 SdLazy, 53 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=43occurred 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, 23 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/bubblesort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_20-20-50-879.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bubblesort_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_20-20-50-879.csv Received shutdown request...