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/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:23:01,424 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:23:01,425 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:23:01,436 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:23:01,436 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:23:01,437 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:23:01,438 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:23:01,439 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:23:01,441 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:23:01,441 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:23:01,442 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:23:01,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:23:01,443 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:23:01,444 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:23:01,446 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:23:01,448 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:23:01,449 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:23:01,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:23:01,452 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:23:01,453 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:23:01,455 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-04 04:23:01,455 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-04 04:23:01,455 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-04 04:23:01,456 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-04 04:23:01,457 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-04 04:23:01,458 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-04 04:23:01,458 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-04 04:23:01,458 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-04 04:23:01,459 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-04 04:23:01,459 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:23:01,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:23:01,459 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 04:23:01,469 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:23:01,470 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:23:01,470 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:23:01,471 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:23:01,471 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:23:01,471 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:23:01,471 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:23:01,471 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:23:01,471 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:23:01,472 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:23:01,473 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:23:01,473 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:23:01,473 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:23:01,473 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:23:01,473 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:23:01,473 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:23:01,474 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:23:01,474 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:23:01,474 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:01,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:23:01,512 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:23:01,519 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:23:01,520 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:23:01,520 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:23:01,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-02-04 04:23:01,664 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:23:01,666 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:23:01,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:23:01,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:23:01,673 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:23:01,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1482aa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01, skipping insertion in model container [2018-02-04 04:23:01,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,694 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:23:01,727 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:23:01,836 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:23:01,851 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:23:01,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01 WrapperNode [2018-02-04 04:23:01,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:23:01,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:23:01,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:23:01,859 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:23:01,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (1/1) ... [2018-02-04 04:23:01,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:23:01,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:23:01,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:23:01,889 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:23:01,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (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 04:23:01,946 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:23:01,946 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:23:01,946 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:23:01,946 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 04:23:01,946 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 04:23:01,946 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:23:01,946 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:23:01,947 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:23:01,947 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:23:01,947 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:23:01,947 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:23:01,947 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:23:02,195 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:23:02,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:23:02 BoogieIcfgContainer [2018-02-04 04:23:02,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:23:02,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:23:02,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:23:02,198 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:23:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:23:01" (1/3) ... [2018-02-04 04:23:02,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bdd43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:23:02, skipping insertion in model container [2018-02-04 04:23:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:23:01" (2/3) ... [2018-02-04 04:23:02,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bdd43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:23:02, skipping insertion in model container [2018-02-04 04:23:02,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:23:02" (3/3) ... [2018-02-04 04:23:02,200 INFO L107 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-02-04 04:23:02,205 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:23:02,210 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-02-04 04:23:02,233 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:23:02,233 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:23:02,233 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:23:02,233 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:23:02,233 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:23:02,233 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:23:02,233 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:23:02,234 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:23:02,234 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:23:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2018-02-04 04:23:02,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-04 04:23:02,248 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:02,249 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:02,249 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:02,252 INFO L82 PathProgramCache]: Analyzing trace with hash -506470517, 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 04:23:02,260 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:02,312 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 04:23:02,331 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:02,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 04:23:02,332 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:02,332 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 04:23:02,333 INFO L182 omatonBuilderFactory]: Interpolants [66#true, 67#false, 71#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:23:02,333 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 04:23:02,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 04:23:02,341 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 04:23:02,341 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:23:02,343 INFO L87 Difference]: Start difference. First operand 63 states. Second operand 3 states. [2018-02-04 04:23:02,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:02,462 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-04 04:23:02,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 04:23:02,463 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-02-04 04:23:02,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:02,469 INFO L225 Difference]: With dead ends: 63 [2018-02-04 04:23:02,469 INFO L226 Difference]: Without dead ends: 60 [2018-02-04 04:23:02,470 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 04:23:02,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-04 04:23:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-04 04:23:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-04 04:23:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-02-04 04:23:02,504 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 12 [2018-02-04 04:23:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:02,504 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-02-04 04:23:02,504 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 04:23:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-02-04 04:23:02,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:23:02,505 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:02,505 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:02,505 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258408, 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 04:23:02,515 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:02,576 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 04:23:02,605 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:02,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:23:02,606 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:02,606 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 04:23:02,606 INFO L182 omatonBuilderFactory]: Interpolants [195#true, 196#false, 200#(= main_~length~0 1), 201#(< main_~i~0 main_~length~0), 202#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:23:02,606 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 04:23:02,608 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:23:02,608 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:23:02,608 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:23:02,609 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 5 states. [2018-02-04 04:23:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:02,884 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2018-02-04 04:23:02,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:23:02,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-02-04 04:23:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:02,886 INFO L225 Difference]: With dead ends: 115 [2018-02-04 04:23:02,886 INFO L226 Difference]: Without dead ends: 115 [2018-02-04 04:23:02,887 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:23:02,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-02-04 04:23:02,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 65. [2018-02-04 04:23:02,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-04 04:23:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-02-04 04:23:02,896 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-02-04 04:23:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:02,897 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-02-04 04:23:02,897 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:23:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-02-04 04:23:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:23:02,897 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:02,898 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:02,898 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:02,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258449, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:02,901 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:02,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:02,949 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:23:02,956 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:02,956 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:02,957 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:02,957 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,001 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:23:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:03,035 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 04:23:03,066 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:03,067 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:23:03,067 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:03,068 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 04:23:03,068 INFO L182 omatonBuilderFactory]: Interpolants [387#true, 388#false, 392#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 393#(= 1 (select |#valid| |main_#t~malloc2.base|)), 394#(= 1 (select |#valid| main_~arr~0.base)), 395#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:23:03,068 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 04:23:03,068 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:23:03,069 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:23:03,069 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:23:03,069 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 6 states. [2018-02-04 04:23:03,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:03,582 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2018-02-04 04:23:03,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:23:03,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-04 04:23:03,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:03,584 INFO L225 Difference]: With dead ends: 112 [2018-02-04 04:23:03,584 INFO L226 Difference]: Without dead ends: 112 [2018-02-04 04:23:03,584 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=28, Unknown=2, NotChecked=10, Total=56 [2018-02-04 04:23:03,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2018-02-04 04:23:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 67. [2018-02-04 04:23:03,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-02-04 04:23:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2018-02-04 04:23:03,590 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 13 [2018-02-04 04:23:03,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:03,590 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2018-02-04 04:23:03,590 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:23:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2018-02-04 04:23:03,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:23:03,591 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:03,591 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:03,592 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1479258450, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:03,595 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:03,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:03,605 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:23:03,608 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,608 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,609 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,609 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,614 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 4) (store |c_#length| %1 4)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:23:03,614 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,615 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,615 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,615 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:03,830 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 04:23:03,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:03,848 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:23:03,849 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:03,849 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 04:23:03,849 INFO L182 omatonBuilderFactory]: Interpolants [579#true, 580#false, 584#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 4) (store |#length| %1 4)) :qid itp)) :qid itp)), 585#(exists ((%0 (Array Int Int))) (! (and (= main_~length~0 1) (forall ((%1 Int)) (! (= (store %0 %1 4) (store |#length| %1 4)) :qid itp))) :qid itp)), 586#(and (= 0 |main_#t~malloc2.offset|) (= 4 (select |#length| |main_#t~malloc2.base|))), 587#(and (<= 0 (+ main_~arr~0.offset (* 4 main_~i~0))) (<= (+ main_~arr~0.offset (* 4 main_~i~0) 4) (select |#length| main_~arr~0.base))), 588#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:23:03,849 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 04:23:03,849 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:23:03,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:23:03,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2018-02-04 04:23:03,850 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 7 states. [2018-02-04 04:23:04,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:04,093 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2018-02-04 04:23:04,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:23:04,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-02-04 04:23:04,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:04,094 INFO L225 Difference]: With dead ends: 108 [2018-02-04 04:23:04,094 INFO L226 Difference]: Without dead ends: 108 [2018-02-04 04:23:04,095 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=4, NotChecked=14, Total=90 [2018-02-04 04:23:04,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-02-04 04:23:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 66. [2018-02-04 04:23:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-02-04 04:23:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2018-02-04 04:23:04,099 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 13 [2018-02-04 04:23:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:04,099 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2018-02-04 04:23:04,100 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:23:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2018-02-04 04:23:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:23:04,100 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:04,100 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:04,100 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:04,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1040701526, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:04,106 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:04,134 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 04:23:04,156 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:04,156 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:23:04,156 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:04,157 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 04:23:04,157 INFO L182 omatonBuilderFactory]: Interpolants [769#true, 770#false, 774#(< 0 main_~length~0), 775#(< main_~i~0 main_~length~0), 776#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:23:04,157 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 04:23:04,157 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:23:04,157 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:23:04,157 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:23:04,157 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 5 states. [2018-02-04 04:23:04,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:04,235 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-02-04 04:23:04,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:23:04,236 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-02-04 04:23:04,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:04,237 INFO L225 Difference]: With dead ends: 64 [2018-02-04 04:23:04,237 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 04:23:04,237 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:23:04,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 04:23:04,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-02-04 04:23:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-04 04:23:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-02-04 04:23:04,241 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 13 [2018-02-04 04:23:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:04,241 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-02-04 04:23:04,241 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:23:04,241 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-02-04 04:23:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:23:04,242 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:04,242 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:04,242 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:04,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1040701485, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:04,244 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:04,250 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 04:23:04,251 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,251 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,251 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,251 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,256 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:23:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:04,268 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 04:23:04,297 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:04,297 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 04:23:04,297 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:04,297 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 04:23:04,297 INFO L182 omatonBuilderFactory]: Interpolants [914#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 915#(= 1 (select |#valid| |main_#t~malloc2.base|)), 916#(= 1 (select |#valid| main_~arr~0.base)), 917#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 909#true, 910#false] [2018-02-04 04:23:04,298 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 04:23:04,298 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 04:23:04,298 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 04:23:04,298 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-04 04:23:04,298 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 6 states. [2018-02-04 04:23:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:04,374 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2018-02-04 04:23:04,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:23:04,374 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-04 04:23:04,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:04,375 INFO L225 Difference]: With dead ends: 64 [2018-02-04 04:23:04,375 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 04:23:04,375 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=28, Unknown=2, NotChecked=10, Total=56 [2018-02-04 04:23:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 04:23:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2018-02-04 04:23:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-02-04 04:23:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2018-02-04 04:23:04,383 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 13 [2018-02-04 04:23:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:04,383 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2018-02-04 04:23:04,383 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 04:23:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2018-02-04 04:23:04,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 04:23:04,384 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:04,384 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:04,384 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1040701484, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:04,387 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:04,412 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier WARNING: array quantifier [2018-02-04 04:23:04,414 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,414 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,414 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,414 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,415 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,415 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 04:23:04,419 WARN L1033 $PredicateComparison]: unable to prove that (forall ((%0 Int)) (! (exists ((%1 (Array Int Int))) (! (forall ((%2 Int)) (! (let ((.cse0 (* 4 %0))) (= (store %1 %2 .cse0) (store |c_#length| %2 .cse0))) :qid itp)) :qid itp)) :qid itp)) is different from true [2018-02-04 04:23:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:23:04,438 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 04:23:04,443 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:23:04,443 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:23:04,443 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:23:04,444 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 04:23:04,444 INFO L182 omatonBuilderFactory]: Interpolants [1056#(and (<= 0 (+ main_~arr~0.offset (* 4 main_~i~0))) (<= (+ main_~arr~0.offset (* 4 main_~i~0) 4) (select |#length| main_~arr~0.base))), 1057#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 1048#true, 1049#false, 1053#(forall ((%0 Int)) (! (exists ((%1 (Array Int Int))) (! (forall ((%2 Int)) (! (= (store %1 %2 (* 4 %0)) (store |#length| %2 (* 4 %0))) :qid itp)) :qid itp)) :qid itp)), 1054#(<= 1 main_~length~0), 1055#(and (<= 4 (select |#length| |main_#t~malloc2.base|)) (= 0 |main_#t~malloc2.offset|))] [2018-02-04 04:23:04,444 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 04:23:04,444 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:23:04,445 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:23:04,445 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2018-02-04 04:23:04,445 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 7 states. [2018-02-04 04:23:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:23:04,543 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-02-04 04:23:04,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:23:04,543 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-02-04 04:23:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:23:04,544 INFO L225 Difference]: With dead ends: 63 [2018-02-04 04:23:04,544 INFO L226 Difference]: Without dead ends: 63 [2018-02-04 04:23:04,544 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=4, NotChecked=16, Total=110 [2018-02-04 04:23:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-02-04 04:23:04,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2018-02-04 04:23:04,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-02-04 04:23:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2018-02-04 04:23:04,550 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 13 [2018-02-04 04:23:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:23:04,551 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2018-02-04 04:23:04,551 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:23:04,551 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2018-02-04 04:23:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:23:04,553 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:23:04,553 INFO L351 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:23:04,553 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-02-04 04:23:04,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1619006049, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:23:04,556 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:23:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:23:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 04:23:04,594 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 04:23:04,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 04:23:04 BoogieIcfgContainer [2018-02-04 04:23:04,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 04:23:04,614 INFO L168 Benchmark]: Toolchain (without parser) took 2949.43 ms. Allocated memory was 404.8 MB in the beginning and 617.1 MB in the end (delta: 212.3 MB). Free memory was 363.0 MB in the beginning and 420.7 MB in the end (delta: -57.8 MB). Peak memory consumption was 154.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:23:04,615 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 404.8 MB. Free memory is still 368.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:23:04,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 191.93 ms. Allocated memory is still 404.8 MB. Free memory was 361.6 MB in the beginning and 351.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:23:04,616 INFO L168 Benchmark]: Boogie Preprocessor took 29.58 ms. Allocated memory is still 404.8 MB. Free memory was 351.1 MB in the beginning and 349.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 04:23:04,617 INFO L168 Benchmark]: RCFGBuilder took 307.00 ms. Allocated memory is still 404.8 MB. Free memory was 349.7 MB in the beginning and 327.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. [2018-02-04 04:23:04,617 INFO L168 Benchmark]: TraceAbstraction took 2417.51 ms. Allocated memory was 404.8 MB in the beginning and 617.1 MB in the end (delta: 212.3 MB). Free memory was 327.8 MB in the beginning and 420.7 MB in the end (delta: -92.9 MB). Peak memory consumption was 119.4 MB. Max. memory is 5.3 GB. [2018-02-04 04:23:04,620 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 404.8 MB. Free memory is still 368.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 191.93 ms. Allocated memory is still 404.8 MB. Free memory was 361.6 MB in the beginning and 351.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.58 ms. Allocated memory is still 404.8 MB. Free memory was 351.1 MB in the beginning and 349.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 307.00 ms. Allocated memory is still 404.8 MB. Free memory was 349.7 MB in the beginning and 327.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2417.51 ms. Allocated memory was 404.8 MB in the beginning and 617.1 MB in the end (delta: 212.3 MB). Free memory was 327.8 MB in the beginning and 420.7 MB in the end (delta: -92.9 MB). Peak memory consumption was 119.4 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: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L544] COND FALSE !(length % 2 == 0) VAL [length=1] [L545] EXPR, FCALL __builtin_alloca (length*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={8:0}, length=1] [L545] int *arr = __builtin_alloca (length*sizeof(int)); [L546] i=0 VAL [__builtin_alloca (length*sizeof(int))={8:0}, arr={8:0}, i=0, length=1] [L546] COND TRUE i