java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:30:04,208 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:30:04,212 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:30:04,232 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:30:04,232 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:30:04,233 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:30:04,235 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:30:04,236 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:30:04,238 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:30:04,239 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:30:04,240 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:30:04,240 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:30:04,241 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:30:04,243 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:30:04,244 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:30:04,244 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:30:04,245 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:30:04,247 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:30:04,250 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:30:04,251 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:30:04,252 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:30:04,254 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:30:04,256 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 11:30:04,257 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 11:30:04,257 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 11:30:04,258 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 11:30:04,259 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 11:30:04,260 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 11:30:04,261 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 11:30:04,262 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 11:30:04,263 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 11:30:04,263 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 11:30:04,264 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 11:30:04,264 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 11:30:04,265 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 11:30:04,266 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 11:30:04,266 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-10-10 11:30:04,286 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:30:04,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:30:04,288 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:30:04,288 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:30:04,288 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:30:04,289 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:30:04,289 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:30:04,289 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:30:04,289 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:30:04,289 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:30:04,289 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:30:04,290 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:30:04,290 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:30:04,290 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:30:04,290 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:30:04,290 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-10 11:30:04,291 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-10 11:30:04,293 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:30:04,293 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:30:04,293 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:30:04,293 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:30:04,294 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:30:04,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:30:04,294 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:30:04,294 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:30:04,294 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-10 11:30:04,295 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:30:04,295 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-10 11:30:04,295 INFO L133 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump [2018-10-10 11:30:04,366 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:30:04,378 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:30:04,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:30:04,384 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:30:04,384 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:30:04,385 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-10-10 11:30:04,686 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179d096b5/2b30919223d849f79266710858535f76/FLAG870935d5f [2018-10-10 11:30:04,920 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:30:04,921 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-10-10 11:30:04,927 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179d096b5/2b30919223d849f79266710858535f76/FLAG870935d5f [2018-10-10 11:30:04,944 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179d096b5/2b30919223d849f79266710858535f76 [2018-10-10 11:30:04,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:30:04,956 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:30:04,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:04,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:30:04,961 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:30:04,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:04" (1/1) ... [2018-10-10 11:30:04,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1dd766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:04, skipping insertion in model container [2018-10-10 11:30:04,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:04" (1/1) ... [2018-10-10 11:30:04,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:30:04,996 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:30:05,182 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:05,201 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:30:05,224 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:05,246 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:30:05,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05 WrapperNode [2018-10-10 11:30:05,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:05,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:05,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:30:05,248 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:30:05,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:05,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:30:05,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:30:05,315 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:30:05,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... [2018-10-10 11:30:05,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:30:05,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:30:05,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:30:05,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:30:05,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (1/1) ... No working directory specified, using /storage/repos/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 [2018-10-10 11:30:05,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:30:05,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:30:06,104 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:30:06,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:06 BoogieIcfgContainer [2018-10-10 11:30:06,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:30:06,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:30:06,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:30:06,109 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:30:06,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:30:04" (1/3) ... [2018-10-10 11:30:06,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2704d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:06, skipping insertion in model container [2018-10-10 11:30:06,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:05" (2/3) ... [2018-10-10 11:30:06,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2704d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:06, skipping insertion in model container [2018-10-10 11:30:06,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:06" (3/3) ... [2018-10-10 11:30:06,113 INFO L112 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe_false-valid-deref.i [2018-10-10 11:30:06,123 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:30:06,131 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-10-10 11:30:06,149 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-10-10 11:30:06,176 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:30:06,177 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:30:06,177 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:30:06,177 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:30:06,177 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:30:06,177 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:30:06,178 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:30:06,178 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:30:06,178 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:30:06,194 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-10-10 11:30:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-10 11:30:06,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:06,204 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-10 11:30:06,207 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:06,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:06,213 INFO L82 PathProgramCache]: Analyzing trace with hash 28745400, now seen corresponding path program 1 times [2018-10-10 11:30:06,218 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:06,219 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:06,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:06,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:06,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:06,309 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:06,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:06,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:30:06,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-10 11:30:06,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-10 11:30:06,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:30:06,339 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-10-10 11:30:06,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:06,356 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-10-10 11:30:06,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-10 11:30:06,358 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2018-10-10 11:30:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:06,369 INFO L225 Difference]: With dead ends: 38 [2018-10-10 11:30:06,370 INFO L226 Difference]: Without dead ends: 36 [2018-10-10 11:30:06,372 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:30:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-10 11:30:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-10 11:30:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-10 11:30:06,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-10-10 11:30:06,411 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 5 [2018-10-10 11:30:06,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:06,412 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-10-10 11:30:06,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-10 11:30:06,412 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-10-10 11:30:06,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-10 11:30:06,413 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:06,413 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-10 11:30:06,414 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:06,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:06,415 INFO L82 PathProgramCache]: Analyzing trace with hash 889540008, now seen corresponding path program 1 times [2018-10-10 11:30:06,415 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:06,415 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:06,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:06,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:30:06,489 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:06,495 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:06,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:30:06,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:30:06,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:30:06,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:06,498 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2018-10-10 11:30:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:06,727 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-10-10 11:30:06,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:30:06,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-10 11:30:06,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:06,729 INFO L225 Difference]: With dead ends: 35 [2018-10-10 11:30:06,729 INFO L226 Difference]: Without dead ends: 33 [2018-10-10 11:30:06,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:06,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-10 11:30:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-10 11:30:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-10 11:30:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-10 11:30:06,736 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2018-10-10 11:30:06,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:06,736 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-10 11:30:06,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:30:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-10 11:30:06,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:30:06,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:06,737 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:06,738 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:06,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:06,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:30:06,739 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:06,739 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:06,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:30:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:30:06,838 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-10 11:30:06,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 11:30:06 BoogieIcfgContainer [2018-10-10 11:30:06,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 11:30:06,864 INFO L168 Benchmark]: Toolchain (without parser) took 1908.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -700.0 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:06,866 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:30:06,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:06,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.90 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:30:06,868 INFO L168 Benchmark]: Boogie Preprocessor took 59.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:30:06,869 INFO L168 Benchmark]: RCFGBuilder took 731.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:06,870 INFO L168 Benchmark]: TraceAbstraction took 756.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:06,874 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 65.90 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 731.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 756.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 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) [L4] int i, j, temp; [L5] i = (array_size - 1) [L5] COND TRUE i >= 0 [L6] j = 1 [L6] COND TRUE j <= i [L7] CALL numbers[j-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 13 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 3 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! Received shutdown request...