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_SmtInterpol_Array.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 14:55:02,808 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 14:55:02,810 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 14:55:02,824 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 14:55:02,825 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 14:55:02,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 14:55:02,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 14:55:02,829 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 14:55:02,831 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 14:55:02,832 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 14:55:02,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 14:55:02,833 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 14:55:02,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 14:55:02,835 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 14:55:02,835 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 14:55:02,838 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 14:55:02,839 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 14:55:02,841 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 14:55:02,842 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 14:55:02,843 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 14:55:02,846 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 14:55:02,851 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 14:55:02,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 14:55:02,852 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf [2018-02-04 14:55:02,863 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 14:55:02,863 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 14:55:02,865 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 14:55:02,865 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 14:55:02,865 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 14:55:02,865 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 14:55:02,866 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 14:55:02,866 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 14:55:02,866 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 14:55:02,866 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 14:55:02,866 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 14:55:02,867 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 14:55:02,867 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 14:55:02,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 14:55:02,867 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 14:55:02,867 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 14:55:02,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 14:55:02,868 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 14:55:02,868 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 14:55:02,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 14:55:02,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 14:55:02,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-04 14:55:02,901 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 14:55:02,911 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 14:55:02,914 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 14:55:02,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 14:55:02,919 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 14:55:02,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-02-04 14:55:03,064 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 14:55:03,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 14:55:03,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 14:55:03,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 14:55:03,070 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 14:55:03,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c73cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03, skipping insertion in model container [2018-02-04 14:55:03,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,083 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 14:55:03,110 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 14:55:03,196 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 14:55:03,208 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 14:55:03,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03 WrapperNode [2018-02-04 14:55:03,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 14:55:03,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 14:55:03,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 14:55:03,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 14:55:03,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,229 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (1/1) ... [2018-02-04 14:55:03,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 14:55:03,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 14:55:03,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 14:55:03,238 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 14:55:03,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (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 14:55:03,274 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 14:55:03,274 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 14:55:03,274 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-02-04 14:55:03,274 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-02-04 14:55:03,275 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-02-04 14:55:03,275 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-02-04 14:55:03,276 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 14:55:03,276 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 14:55:03,276 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 14:55:03,489 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 14:55:03,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 02:55:03 BoogieIcfgContainer [2018-02-04 14:55:03,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 14:55:03,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 14:55:03,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 14:55:03,492 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 14:55:03,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 02:55:03" (1/3) ... [2018-02-04 14:55:03,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9c24b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 02:55:03, skipping insertion in model container [2018-02-04 14:55:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 02:55:03" (2/3) ... [2018-02-04 14:55:03,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9c24b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 02:55:03, skipping insertion in model container [2018-02-04 14:55:03,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 02:55:03" (3/3) ... [2018-02-04 14:55:03,495 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe_false-valid-deref.i [2018-02-04 14:55:03,500 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 14:55:03,506 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-02-04 14:55:03,539 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 14:55:03,539 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 14:55:03,539 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-04 14:55:03,539 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 14:55:03,539 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 14:55:03,539 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 14:55:03,539 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 14:55:03,539 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 14:55:03,540 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 14:55:03,550 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-02-04 14:55:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-04 14:55:03,559 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:03,559 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:03,559 INFO L371 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 14:55:03,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1167838739, now seen corresponding path program 1 times [2018-02-04 14:55:03,594 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:03,636 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:03,698 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 14:55:03,699 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:03,700 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-04 14:55:03,700 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:03,701 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 14:55:03,701 INFO L182 omatonBuilderFactory]: Interpolants [68#true, 69#false, 70#(= 1 (select |#valid| |build_nondet_String_#t~malloc1.base|)), 71#(= 1 (select |#valid| build_nondet_String_~nondetString~0.base))] [2018-02-04 14:55:03,701 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 14:55:03,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 14:55:03,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 14:55:03,710 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-04 14:55:03,711 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2018-02-04 14:55:03,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:03,883 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2018-02-04 14:55:03,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 14:55:03,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-02-04 14:55:03,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:03,891 INFO L225 Difference]: With dead ends: 64 [2018-02-04 14:55:03,891 INFO L226 Difference]: Without dead ends: 61 [2018-02-04 14:55:03,892 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:55:03,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-02-04 14:55:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-02-04 14:55:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-04 14:55:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2018-02-04 14:55:03,922 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 11 [2018-02-04 14:55:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:03,923 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2018-02-04 14:55:03,923 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 14:55:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2018-02-04 14:55:03,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-04 14:55:03,923 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:03,923 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:03,924 INFO L371 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 14:55:03,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1167838738, now seen corresponding path program 1 times [2018-02-04 14:55:03,925 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:03,941 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,044 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 14:55:04,044 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 14:55:04,044 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:04,045 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 14:55:04,045 INFO L182 omatonBuilderFactory]: Interpolants [199#true, 200#false, 201#(<= 1 build_nondet_String_~length~0), 202#(and (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| |build_nondet_String_#t~malloc1.base|)) (= 0 |build_nondet_String_#t~malloc1.offset|)), 203#(and (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| build_nondet_String_~nondetString~0.base)) (= build_nondet_String_~nondetString~0.offset 0))] [2018-02-04 14:55:04,045 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 14:55:04,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 14:55:04,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 14:55:04,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 14:55:04,047 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 5 states. [2018-02-04 14:55:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:04,074 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-02-04 14:55:04,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 14:55:04,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-02-04 14:55:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:04,075 INFO L225 Difference]: With dead ends: 60 [2018-02-04 14:55:04,076 INFO L226 Difference]: Without dead ends: 60 [2018-02-04 14:55:04,076 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-04 14:55:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-02-04 14:55:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-02-04 14:55:04,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-04 14:55:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-02-04 14:55:04,082 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 11 [2018-02-04 14:55:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:04,082 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-02-04 14:55:04,082 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 14:55:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-02-04 14:55:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-04 14:55:04,083 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:04,083 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:04,083 INFO L371 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 14:55:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1764023599, now seen corresponding path program 1 times [2018-02-04 14:55:04,084 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:04,109 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,275 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:04,275 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-02-04 14:55:04,275 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,276 INFO L182 omatonBuilderFactory]: Interpolants [336#(= 1 (select |#valid| |cstrpbrk_#in~s1.base|)), 337#(= 1 (select |#valid| cstrpbrk_~sc1~0.base)), 326#true, 327#false, 328#(= 1 (select |#valid| build_nondet_String_~nondetString~0.base)), 329#(= 1 (select |#valid| |build_nondet_String_#res.base|)), 330#(= 1 (select |#valid| |main_#t~ret11.base|)), 331#(= 1 (select |#valid| main_~s1~0.base)), 332#(= |#valid| |old(#valid)|), 333#(= |#valid| (store |old(#valid)| |build_nondet_String_#t~malloc1.base| (select |#valid| |build_nondet_String_#t~malloc1.base|))), 334#(and (or (= build_nondet_String_~nondetString~0.base (@diff |old(#valid)| |#valid|)) (= |#valid| |old(#valid)|)) (= |#valid| (store |old(#valid)| (@diff |old(#valid)| |#valid|) (select |#valid| (@diff |old(#valid)| |#valid|))))), 335#(and (or (= 1 (select |#valid| (@diff |old(#valid)| |#valid|))) (= |#valid| |old(#valid)|)) (= |#valid| (store |old(#valid)| (@diff |old(#valid)| |#valid|) (select |#valid| (@diff |old(#valid)| |#valid|)))))] [2018-02-04 14:55:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,276 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-04 14:55:04,277 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-04 14:55:04,277 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-02-04 14:55:04,277 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 12 states. [2018-02-04 14:55:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:04,701 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-02-04 14:55:04,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 14:55:04,702 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2018-02-04 14:55:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:04,703 INFO L225 Difference]: With dead ends: 57 [2018-02-04 14:55:04,703 INFO L226 Difference]: Without dead ends: 57 [2018-02-04 14:55:04,703 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2018-02-04 14:55:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-02-04 14:55:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-02-04 14:55:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-02-04 14:55:04,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-02-04 14:55:04,707 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 29 [2018-02-04 14:55:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:04,709 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-02-04 14:55:04,709 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-04 14:55:04,710 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-02-04 14:55:04,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-02-04 14:55:04,710 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:04,710 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:04,711 INFO L371 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 14:55:04,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1764023598, now seen corresponding path program 1 times [2018-02-04 14:55:04,712 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 14:55:04,727 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-04 14:55:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 14:55:04,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-02-04 14:55:04,948 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 14:55:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,948 INFO L182 omatonBuilderFactory]: Interpolants [480#(and (<= 1 (select |#length| main_~s1~0.base)) (= 0 main_~s1~0.offset)), 481#(and (= 0 |cstrpbrk_#in~s1.offset|) (<= 1 (select |#length| |cstrpbrk_#in~s1.base|))), 482#(and (= cstrpbrk_~sc1~0.offset 0) (<= 1 (select |#length| cstrpbrk_~sc1~0.base))), 468#true, 469#false, 470#(<= 1 build_nondet_String_~length~0), 471#(and (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| |build_nondet_String_#t~malloc1.base|)) (= 0 |build_nondet_String_#t~malloc1.offset|)), 472#(and (= 0 build_nondet_String_~nondetString~0.offset) (<= 1 build_nondet_String_~length~0) (= build_nondet_String_~length~0 (select |#length| build_nondet_String_~nondetString~0.base))), 473#(and (= 0 build_nondet_String_~nondetString~0.offset) (<= 1 (select |#length| build_nondet_String_~nondetString~0.base)) (= (select |#valid| build_nondet_String_~nondetString~0.base) 1)), 474#(and (<= 1 (select |#length| |build_nondet_String_#res.base|)) (= (select |#valid| |build_nondet_String_#res.base|) 1) (= 0 |build_nondet_String_#res.offset|)), 475#(and (= (select |#valid| |main_#t~ret11.base|) 1) (<= 1 (select |#length| |main_#t~ret11.base|)) (= 0 |main_#t~ret11.offset|)), 476#(and (<= 1 (select |#length| main_~s1~0.base)) (= 0 main_~s1~0.offset) (= (select |#valid| main_~s1~0.base) 1)), 477#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 478#(and (= (store |old(#length)| |build_nondet_String_#t~malloc1.base| (select |#length| |build_nondet_String_#t~malloc1.base|)) |#length|) (= 0 (select |old(#valid)| |build_nondet_String_#t~malloc1.base|))), 479#(and (or (= 0 (select |old(#valid)| (@diff |old(#length)| |#length|))) (= |old(#length)| |#length|)) (= |#length| (store |old(#length)| (@diff |old(#length)| |#length|) (select |#length| (@diff |old(#length)| |#length|)))))] [2018-02-04 14:55:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 14:55:04,949 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-02-04 14:55:04,949 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-02-04 14:55:04,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2018-02-04 14:55:04,949 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 15 states. [2018-02-04 14:55:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 14:55:05,340 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2018-02-04 14:55:05,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-02-04 14:55:05,341 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2018-02-04 14:55:05,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 14:55:05,343 INFO L225 Difference]: With dead ends: 80 [2018-02-04 14:55:05,343 INFO L226 Difference]: Without dead ends: 80 [2018-02-04 14:55:05,344 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2018-02-04 14:55:05,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-02-04 14:55:05,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2018-02-04 14:55:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-04 14:55:05,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-02-04 14:55:05,348 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 29 [2018-02-04 14:55:05,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 14:55:05,349 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-02-04 14:55:05,349 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-02-04 14:55:05,349 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-02-04 14:55:05,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-02-04 14:55:05,350 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 14:55:05,350 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 14:55:05,350 INFO L371 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr0RequiresViolation, build_nondet_StringErr1RequiresViolation, cstrpbrkErr3RequiresViolation, cstrpbrkErr1RequiresViolation, cstrpbrkErr9RequiresViolation, cstrpbrkErr7RequiresViolation, cstrpbrkErr2RequiresViolation, cstrpbrkErr8RequiresViolation, cstrpbrkErr4RequiresViolation, cstrpbrkErr0RequiresViolation, cstrpbrkErr6RequiresViolation, cstrpbrkErr5RequiresViolation, mainErr5RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr6EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 14:55:05,350 INFO L82 PathProgramCache]: Analyzing trace with hash -464489331, now seen corresponding path program 1 times [2018-02-04 14:55:05,351 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 14:55:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 14:55:05,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-04 14:55:05,400 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-04 14:55:05,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 02:55:05 BoogieIcfgContainer [2018-02-04 14:55:05,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 14:55:05,423 INFO L168 Benchmark]: Toolchain (without parser) took 2359.06 ms. Allocated memory was 407.9 MB in the beginning and 636.5 MB in the end (delta: 228.6 MB). Free memory was 364.8 MB in the beginning and 506.8 MB in the end (delta: -142.0 MB). Peak memory consumption was 86.6 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:05,424 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 407.9 MB. Free memory is still 371.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 14:55:05,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.63 ms. Allocated memory is still 407.9 MB. Free memory was 364.8 MB in the beginning and 354.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:05,424 INFO L168 Benchmark]: Boogie Preprocessor took 24.90 ms. Allocated memory is still 407.9 MB. Free memory was 354.1 MB in the beginning and 352.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:05,424 INFO L168 Benchmark]: RCFGBuilder took 252.11 ms. Allocated memory is still 407.9 MB. Free memory was 352.8 MB in the beginning and 330.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:05,425 INFO L168 Benchmark]: TraceAbstraction took 1932.59 ms. Allocated memory was 407.9 MB in the beginning and 636.5 MB in the end (delta: 228.6 MB). Free memory was 330.8 MB in the beginning and 506.8 MB in the end (delta: -175.9 MB). Peak memory consumption was 52.7 MB. Max. memory is 5.3 GB. [2018-02-04 14:55:05,426 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 407.9 MB. Free memory is still 371.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 146.63 ms. Allocated memory is still 407.9 MB. Free memory was 364.8 MB in the beginning and 354.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.90 ms. Allocated memory is still 407.9 MB. Free memory was 354.1 MB in the beginning and 352.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 252.11 ms. Allocated memory is still 407.9 MB. Free memory was 352.8 MB in the beginning and 330.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1932.59 ms. Allocated memory was 407.9 MB in the beginning and 636.5 MB in the end (delta: 228.6 MB). Free memory was 330.8 MB in the beginning and 506.8 MB in the end (delta: -175.9 MB). Peak memory consumption was 52.7 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: [L565] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L545] EXPR, FCALL malloc(length * sizeof(char)) VAL [length=1, malloc(length * sizeof(char))={3:0}] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L546] FCALL nondetString[length-1] = '\0' VAL [length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L547] RET return nondetString; VAL [\result={3:0}, length=1, malloc(length * sizeof(char))={3:0}, nondetString={3:0}] [L565] EXPR build_nondet_String() VAL [build_nondet_String()={3:0}] [L565] char* s1 = build_nondet_String(); [L566] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 VAL [length=1] [L545] EXPR, FCALL malloc(length * sizeof(char)) VAL [length=1, malloc(length * sizeof(char))={4:0}] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L546] FCALL nondetString[length-1] = '\0' VAL [length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L547] RET return nondetString; VAL [\result={4:0}, length=1, malloc(length * sizeof(char))={4:0}, nondetString={4:0}] [L566] EXPR build_nondet_String() VAL [build_nondet_String()={4:0}, s1={3:0}] [L566] char* s2 = build_nondet_String(); [L567] CALL cstrpbrk(s1,s2) VAL [s1={3:0}, s2={4:0}] [L551] const char *sc1; [L552] const char *s; [L553] int c; [L554] sc1 = s1 VAL [s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L554] EXPR, FCALL \read(*sc1) VAL [\read(*sc1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L554] COND FALSE !(*sc1 != '\0') [L562] RET return 0; VAL [\result={0:0}, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L567] cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={3:0}, s2={4:0}] [L567] FCALL cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={3:0}, s2={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 19 error locations. UNSAFE Result, 1.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 196 SDtfs, 296 SDslu, 354 SDs, 0 SdLazy, 752 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 7/16 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, 4 MinimizatonAttempts, 20 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 76 ConstructedInterpolants, 0 QuantifiedInterpolants, 13148 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 7/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_14-55-05-431.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_Array.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_14-55-05-431.csv Received shutdown request...