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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 20:57:37,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 20:57:37,763 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 20:57:37,780 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 20:57:37,781 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 20:57:37,782 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 20:57:37,783 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 20:57:37,787 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 20:57:37,789 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 20:57:37,790 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 20:57:37,791 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 20:57:37,791 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 20:57:37,794 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 20:57:37,796 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 20:57:37,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 20:57:37,799 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 20:57:37,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 20:57:37,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 20:57:37,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 20:57:37,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 20:57:37,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 20:57:37,809 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 20:57:37,809 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 20:57:37,811 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 20:57:37,812 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 20:57:37,813 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 20:57:37,813 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 20:57:37,814 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 20:57:37,815 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 20:57:37,815 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 20:57:37,816 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 20:57:37,816 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 20:57:37,827 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 20:57:37,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 20:57:37,828 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 20:57:37,828 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 20:57:37,828 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 20:57:37,829 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 20:57:37,829 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 20:57:37,829 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 20:57:37,830 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 20:57:37,830 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 20:57:37,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 20:57:37,830 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 20:57:37,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 20:57:37,831 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 20:57:37,831 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 20:57:37,831 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 20:57:37,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 20:57:37,831 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 20:57:37,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 20:57:37,832 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 20:57:37,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 20:57:37,832 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 20:57:37,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 20:57:37,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 20:57:37,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 20:57:37,833 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 20:57:37,833 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 20:57:37,833 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 20:57:37,833 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 20:57:37,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 20:57:37,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 20:57:37,834 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 20:57:37,835 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 20:57:37,835 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 20:57:37,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 20:57:37,896 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 20:57:37,900 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 20:57:37,901 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 20:57:37,902 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 20:57:37,903 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-01-28 20:57:38,082 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 20:57:38,089 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 20:57:38,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 20:57:38,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 20:57:38,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 20:57:38,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16c36e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38, skipping insertion in model container [2018-01-28 20:57:38,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,125 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 20:57:38,191 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 20:57:38,337 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 20:57:38,361 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 20:57:38,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38 WrapperNode [2018-01-28 20:57:38,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 20:57:38,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 20:57:38,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 20:57:38,371 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 20:57:38,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... [2018-01-28 20:57:38,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 20:57:38,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 20:57:38,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 20:57:38,407 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 20:57:38,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (1/1) ... No working directory specified, using /storage/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 [2018-01-28 20:57:38,467 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 20:57:38,467 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 20:57:38,467 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-28 20:57:38,468 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-28 20:57:38,468 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 20:57:38,468 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 20:57:38,468 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 20:57:38,468 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 20:57:38,468 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 20:57:38,469 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 20:57:38,469 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 20:57:38,469 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 20:57:38,470 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 20:57:38,470 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-28 20:57:38,470 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-28 20:57:38,470 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 20:57:38,471 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 20:57:38,471 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 20:57:39,157 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 20:57:39,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:57:39 BoogieIcfgContainer [2018-01-28 20:57:39,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 20:57:39,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 20:57:39,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 20:57:39,164 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 20:57:39,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 08:57:38" (1/3) ... [2018-01-28 20:57:39,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696d7026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:57:39, skipping insertion in model container [2018-01-28 20:57:39,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 08:57:38" (2/3) ... [2018-01-28 20:57:39,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696d7026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 08:57:39, skipping insertion in model container [2018-01-28 20:57:39,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 08:57:39" (3/3) ... [2018-01-28 20:57:39,169 INFO L107 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe_false-valid-deref.i [2018-01-28 20:57:39,180 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 20:57:39,187 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-28 20:57:39,254 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 20:57:39,254 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 20:57:39,254 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 20:57:39,254 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 20:57:39,254 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 20:57:39,255 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 20:57:39,255 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 20:57:39,255 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 20:57:39,256 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 20:57:39,298 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2018-01-28 20:57:39,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-28 20:57:39,312 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:39,314 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 20:57:39,314 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]=== [2018-01-28 20:57:39,319 INFO L82 PathProgramCache]: Analyzing trace with hash -617440115, now seen corresponding path program 1 times [2018-01-28 20:57:39,322 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:39,323 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:39,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:39,393 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:39,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:39,510 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 20:57:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 20:57:39,686 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 20:57:39,686 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-28 20:57:39,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 20:57:39,699 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 20:57:39,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 20:57:39,702 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 4 states. [2018-01-28 20:57:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 20:57:39,975 INFO L93 Difference]: Finished difference Result 160 states and 172 transitions. [2018-01-28 20:57:39,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-28 20:57:39,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-01-28 20:57:39,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 20:57:39,987 INFO L225 Difference]: With dead ends: 160 [2018-01-28 20:57:39,987 INFO L226 Difference]: Without dead ends: 92 [2018-01-28 20:57:39,990 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 20:57:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-01-28 20:57:40,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2018-01-28 20:57:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-01-28 20:57:40,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2018-01-28 20:57:40,034 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 14 [2018-01-28 20:57:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 20:57:40,035 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2018-01-28 20:57:40,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 20:57:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2018-01-28 20:57:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-01-28 20:57:40,036 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:40,036 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 20:57:40,036 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]=== [2018-01-28 20:57:40,037 INFO L82 PathProgramCache]: Analyzing trace with hash -617440114, now seen corresponding path program 1 times [2018-01-28 20:57:40,037 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:40,037 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:40,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:40,038 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:40,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:40,055 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 20:57:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 20:57:40,406 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 20:57:40,406 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 20:57:40,408 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 20:57:40,408 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 20:57:40,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 20:57:40,409 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 5 states. [2018-01-28 20:57:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 20:57:40,455 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2018-01-28 20:57:40,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 20:57:40,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-01-28 20:57:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 20:57:40,458 INFO L225 Difference]: With dead ends: 92 [2018-01-28 20:57:40,458 INFO L226 Difference]: Without dead ends: 91 [2018-01-28 20:57:40,459 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-28 20:57:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-28 20:57:40,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2018-01-28 20:57:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-01-28 20:57:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2018-01-28 20:57:40,468 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 14 [2018-01-28 20:57:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 20:57:40,469 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2018-01-28 20:57:40,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 20:57:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2018-01-28 20:57:40,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-28 20:57:40,470 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:40,470 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1] [2018-01-28 20:57:40,470 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]=== [2018-01-28 20:57:40,470 INFO L82 PathProgramCache]: Analyzing trace with hash -942834211, now seen corresponding path program 1 times [2018-01-28 20:57:40,470 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:40,470 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:40,471 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:40,471 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:40,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:40,513 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 20:57:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 20:57:41,062 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 20:57:41,062 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 20:57:41,080 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:41,153 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 20:57:41,411 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-01-28 20:57:41,412 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 20:57:41,416 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-28 20:57:41,417 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2018-01-28 20:57:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 20:57:41,480 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 20:57:41,481 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2018-01-28 20:57:41,481 INFO L409 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-01-28 20:57:41,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-01-28 20:57:41,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=193, Unknown=7, NotChecked=0, Total=240 [2018-01-28 20:57:41,482 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand 16 states. [2018-01-28 20:57:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 20:57:42,399 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2018-01-28 20:57:42,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-28 20:57:42,399 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-01-28 20:57:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 20:57:42,401 INFO L225 Difference]: With dead ends: 101 [2018-01-28 20:57:42,401 INFO L226 Difference]: Without dead ends: 98 [2018-01-28 20:57:42,402 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=475, Unknown=7, NotChecked=0, Total=600 [2018-01-28 20:57:42,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-28 20:57:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2018-01-28 20:57:42,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-01-28 20:57:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2018-01-28 20:57:42,414 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 41 [2018-01-28 20:57:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 20:57:42,418 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2018-01-28 20:57:42,418 INFO L433 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-01-28 20:57:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2018-01-28 20:57:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-28 20:57:42,419 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:42,420 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1] [2018-01-28 20:57:42,420 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]=== [2018-01-28 20:57:42,420 INFO L82 PathProgramCache]: Analyzing trace with hash -942834210, now seen corresponding path program 1 times [2018-01-28 20:57:42,420 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:42,420 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:42,421 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:42,421 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:42,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:42,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 20:57:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 20:57:42,765 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 20:57:42,765 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 20:57:42,771 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 20:57:42,795 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 20:57:43,017 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|build_nondet_String_#t~malloc1.base| Int) (build_nondet_String_~length~4 Int)) (and (= (store |c_old(#length)| |build_nondet_String_#t~malloc1.base| build_nondet_String_~length~4) |c_#length|) (= 0 (select |c_old(#valid)| |build_nondet_String_#t~malloc1.base|)))) is different from true [2018-01-28 20:57:43,030 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 20:57:43,031 INFO L700 Elim1Store]: detected not equals via solver [2018-01-28 20:57:43,058 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-01-28 20:57:43,058 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-28 20:57:43,067 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 17 [2018-01-28 20:57:43,068 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-28 20:57:43,073 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-28 20:57:43,074 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:11 [2018-01-28 20:57:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-01-28 20:57:43,182 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-28 20:57:43,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2018-01-28 20:57:43,183 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-28 20:57:43,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-28 20:57:43,183 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=630, Unknown=2, NotChecked=50, Total=756 [2018-01-28 20:57:43,184 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand 28 states. [2018-01-28 20:57:44,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 20:57:44,469 INFO L93 Difference]: Finished difference Result 131 states and 141 transitions. [2018-01-28 20:57:44,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-28 20:57:44,469 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 41 [2018-01-28 20:57:44,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 20:57:44,472 INFO L225 Difference]: With dead ends: 131 [2018-01-28 20:57:44,472 INFO L226 Difference]: Without dead ends: 128 [2018-01-28 20:57:44,473 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=1293, Unknown=2, NotChecked=74, Total=1560 [2018-01-28 20:57:44,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-01-28 20:57:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 89. [2018-01-28 20:57:44,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-28 20:57:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-01-28 20:57:44,482 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 41 [2018-01-28 20:57:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 20:57:44,482 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-01-28 20:57:44,483 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-28 20:57:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-01-28 20:57:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-28 20:57:44,484 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 20:57:44,484 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 20:57:44,484 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]=== [2018-01-28 20:57:44,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1065685588, now seen corresponding path program 1 times [2018-01-28 20:57:44,484 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 20:57:44,484 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 20:57:44,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:44,485 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 20:57:44,485 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 20:57:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 20:57:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 20:57:44,547 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 20:57:44,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 08:57:44 BoogieIcfgContainer [2018-01-28 20:57:44,583 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 20:57:44,584 INFO L168 Benchmark]: Toolchain (without parser) took 6501.42 ms. Allocated memory was 310.9 MB in the beginning and 488.6 MB in the end (delta: 177.7 MB). Free memory was 269.8 MB in the beginning and 404.3 MB in the end (delta: -134.6 MB). Peak memory consumption was 43.2 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:44,586 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 310.9 MB. Free memory is still 275.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 20:57:44,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.14 ms. Allocated memory is still 310.9 MB. Free memory was 269.8 MB in the beginning and 259.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:44,586 INFO L168 Benchmark]: Boogie Preprocessor took 36.07 ms. Allocated memory is still 310.9 MB. Free memory was 259.8 MB in the beginning and 257.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:44,587 INFO L168 Benchmark]: RCFGBuilder took 750.69 ms. Allocated memory is still 310.9 MB. Free memory was 257.8 MB in the beginning and 232.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:44,587 INFO L168 Benchmark]: TraceAbstraction took 5423.69 ms. Allocated memory was 310.9 MB in the beginning and 488.6 MB in the end (delta: 177.7 MB). Free memory was 232.7 MB in the beginning and 404.3 MB in the end (delta: -171.7 MB). Peak memory consumption was 6.1 MB. Max. memory is 5.3 GB. [2018-01-28 20:57:44,588 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 310.9 MB. Free memory is still 275.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 280.14 ms. Allocated memory is still 310.9 MB. Free memory was 269.8 MB in the beginning and 259.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.07 ms. Allocated memory is still 310.9 MB. Free memory was 259.8 MB in the beginning and 257.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 750.69 ms. Allocated memory is still 310.9 MB. Free memory was 257.8 MB in the beginning and 232.7 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 5423.69 ms. Allocated memory was 310.9 MB in the beginning and 488.6 MB in the end (delta: 177.7 MB). Free memory was 232.7 MB in the beginning and 404.3 MB in the end (delta: -171.7 MB). Peak memory consumption was 6.1 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(); VAL [__VERIFIER_nondet_int()=1, length=1] [L542] COND FALSE !(length < 1) VAL [length=1] [L545] EXPR, FCALL malloc(length * sizeof(char)) VAL [length=1, malloc(length * sizeof(char))={7:0}] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={7:0}, nondetString={7:0}] [L546] FCALL nondetString[length-1] = '\0' VAL [length=1, malloc(length * sizeof(char))={7:0}, nondetString={7:0}] [L547] RET return nondetString; VAL [\result={7:0}, length=1, malloc(length * sizeof(char))={7:0}, nondetString={7:0}] [L565] EXPR build_nondet_String() VAL [build_nondet_String()={7:0}] [L565] char* s1 = build_nondet_String(); VAL [build_nondet_String()={7:0}, s1={7:0}] [L566] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=5, length=5] [L542] COND FALSE !(length < 1) VAL [length=5] [L545] EXPR, FCALL malloc(length * sizeof(char)) VAL [length=5, malloc(length * sizeof(char))={8:0}] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=5, malloc(length * sizeof(char))={8:0}, nondetString={8:0}] [L546] FCALL nondetString[length-1] = '\0' VAL [length=5, malloc(length * sizeof(char))={8:0}, nondetString={8:0}] [L547] RET return nondetString; VAL [\result={8:0}, length=5, malloc(length * sizeof(char))={8:0}, nondetString={8:0}] [L566] EXPR build_nondet_String() VAL [build_nondet_String()={8:0}, s1={7:0}] [L566] char* s2 = build_nondet_String(); VAL [build_nondet_String()={8:0}, s1={7:0}, s2={8:0}] [L567] CALL cstrpbrk(s1,s2) VAL [s1={7:0}, s2={8:0}] [L551] const char *sc1; VAL [s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}] [L552] const char *s; VAL [s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}] [L553] int c; VAL [s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}] [L554] sc1 = s1 VAL [s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}, sc1={7:0}] [L554] EXPR, FCALL \read(*sc1) VAL [\read(*sc1)=0, s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}, sc1={7:0}] [L554] COND FALSE !(*sc1 != '\0') VAL [\read(*sc1)=0, s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}, sc1={7:0}] [L562] RET return 0; VAL [\result={0:0}, s1={7:0}, s1={7:0}, s2={8:0}, s2={8:0}, sc1={7:0}] [L567] cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={7:0}, s2={8:0}] [L567] FCALL cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={7:0}, s2={8:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 96 locations, 19 error locations. UNSAFE Result, 5.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 2.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 324 SDtfs, 832 SDslu, 818 SDs, 0 SdLazy, 1628 SolverSat, 30 SolverUnsat, 11 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 68 SyntacticMatches, 4 SemanticMatches, 68 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 46 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 186 ConstructedInterpolants, 8 QuantifiedInterpolants, 45354 SizeOfPredicates, 19 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 22/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_20-57-44-595.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrpbrk_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_20-57-44-595.csv Received shutdown request...