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.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 11:38:55,330 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 11:38:55,332 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 11:38:55,345 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 11:38:55,345 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 11:38:55,346 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 11:38:55,347 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 11:38:55,348 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 11:38:55,350 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 11:38:55,350 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 11:38:55,351 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 11:38:55,351 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 11:38:55,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 11:38:55,353 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 11:38:55,354 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 11:38:55,356 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 11:38:55,358 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 11:38:55,361 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 11:38:55,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 11:38:55,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 11:38:55,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 11:38:55,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 11:38:55,366 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 11:38:55,367 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 11:38:55,368 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 11:38:55,369 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 11:38:55,370 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 11:38:55,370 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 11:38:55,371 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 11:38:55,371 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 11:38:55,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 11:38:55,372 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.epf [2018-01-24 11:38:55,382 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 11:38:55,382 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 11:38:55,383 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 11:38:55,383 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 11:38:55,383 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 11:38:55,384 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 11:38:55,384 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 11:38:55,384 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 11:38:55,385 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 11:38:55,385 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 11:38:55,385 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 11:38:55,385 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 11:38:55,385 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 11:38:55,386 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 11:38:55,386 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 11:38:55,386 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 11:38:55,386 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 11:38:55,386 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 11:38:55,387 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 11:38:55,387 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 11:38:55,387 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 11:38:55,387 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 11:38:55,387 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 11:38:55,388 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 11:38:55,388 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 11:38:55,388 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 11:38:55,388 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 11:38:55,388 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 11:38:55,389 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 11:38:55,389 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 11:38:55,389 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 11:38:55,389 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 11:38:55,390 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 11:38:55,390 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 11:38:55,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 11:38:55,436 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 11:38:55,439 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 11:38:55,440 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 11:38:55,440 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 11:38:55,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrpbrk_unsafe_false-valid-deref.i [2018-01-24 11:38:55,601 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 11:38:55,605 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 11:38:55,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 11:38:55,606 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 11:38:55,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 11:38:55,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb77e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55, skipping insertion in model container [2018-01-24 11:38:55,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,631 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 11:38:55,671 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 11:38:55,791 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 11:38:55,808 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 11:38:55,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55 WrapperNode [2018-01-24 11:38:55,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 11:38:55,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 11:38:55,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 11:38:55,816 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 11:38:55,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (1/1) ... [2018-01-24 11:38:55,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 11:38:55,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 11:38:55,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 11:38:55,852 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 11:38:55,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (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 [2018-01-24 11:38:55,902 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 11:38:55,902 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 11:38:55,902 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-24 11:38:55,902 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrpbrk [2018-01-24 11:38:55,902 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 11:38:55,902 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-24 11:38:55,903 INFO L128 BoogieDeclarations]: Found specification of procedure cstrpbrk [2018-01-24 11:38:55,904 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 11:38:55,904 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 11:38:55,904 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 11:38:56,170 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 11:38:56,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:38:56 BoogieIcfgContainer [2018-01-24 11:38:56,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 11:38:56,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 11:38:56,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 11:38:56,174 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 11:38:56,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 11:38:55" (1/3) ... [2018-01-24 11:38:56,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da81185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:38:56, skipping insertion in model container [2018-01-24 11:38:56,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 11:38:55" (2/3) ... [2018-01-24 11:38:56,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da81185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 11:38:56, skipping insertion in model container [2018-01-24 11:38:56,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 11:38:56" (3/3) ... [2018-01-24 11:38:56,178 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrpbrk_unsafe_false-valid-deref.i [2018-01-24 11:38:56,185 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 11:38:56,192 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-01-24 11:38:56,229 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 11:38:56,229 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 11:38:56,229 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 11:38:56,229 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 11:38:56,229 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 11:38:56,229 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 11:38:56,230 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 11:38:56,230 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 11:38:56,230 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 11:38:56,249 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-24 11:38:56,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 11:38:56,255 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 11:38:56,257 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 11:38:56,257 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]=== [2018-01-24 11:38:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1167838739, now seen corresponding path program 1 times [2018-01-24 11:38:56,262 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 11:38:56,263 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 11:38:56,306 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:56,306 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:56,307 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 11:38:56,363 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 11:38:56,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 11:38:56,447 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 11:38:56,447 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 11:38:56,449 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 11:38:56,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 11:38:56,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 11:38:56,466 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2018-01-24 11:38:56,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 11:38:56,716 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2018-01-24 11:38:56,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 11:38:56,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-01-24 11:38:56,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 11:38:56,726 INFO L225 Difference]: With dead ends: 109 [2018-01-24 11:38:56,726 INFO L226 Difference]: Without dead ends: 61 [2018-01-24 11:38:56,730 INFO L525 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 [2018-01-24 11:38:56,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-24 11:38:56,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-01-24 11:38:56,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-01-24 11:38:56,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2018-01-24 11:38:56,771 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 11 [2018-01-24 11:38:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 11:38:56,771 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2018-01-24 11:38:56,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 11:38:56,771 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2018-01-24 11:38:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-01-24 11:38:56,772 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 11:38:56,772 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 11:38:56,772 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]=== [2018-01-24 11:38:56,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1167838738, now seen corresponding path program 1 times [2018-01-24 11:38:56,772 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 11:38:56,772 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 11:38:56,773 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:56,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:56,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 11:38:56,791 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 11:38:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 11:38:56,894 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 11:38:56,894 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 11:38:56,896 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 11:38:56,896 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 11:38:56,896 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 11:38:56,897 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 5 states. [2018-01-24 11:38:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 11:38:56,943 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2018-01-24 11:38:56,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 11:38:56,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-01-24 11:38:56,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 11:38:56,947 INFO L225 Difference]: With dead ends: 61 [2018-01-24 11:38:56,947 INFO L226 Difference]: Without dead ends: 60 [2018-01-24 11:38:56,948 INFO L525 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 [2018-01-24 11:38:56,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-24 11:38:56,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-01-24 11:38:56,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-24 11:38:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2018-01-24 11:38:56,956 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 11 [2018-01-24 11:38:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 11:38:56,956 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2018-01-24 11:38:56,956 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 11:38:56,956 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2018-01-24 11:38:56,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 11:38:56,958 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 11:38:56,958 INFO L322 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] [2018-01-24 11:38:56,958 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]=== [2018-01-24 11:38:56,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1764023599, now seen corresponding path program 1 times [2018-01-24 11:38:56,958 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 11:38:56,958 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 11:38:56,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:56,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:56,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 11:38:56,984 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 11:38:57,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 11:38:57,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 11:38:57,223 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 [2018-01-24 11:38:57,229 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 11:38:57,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 11:38:57,437 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 [2018-01-24 11:38:57,438 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 11:38:57,442 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. [2018-01-24 11:38:57,443 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2018-01-24 11:38:57,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 11:38:57,529 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 11:38:57,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2018-01-24 11:38:57,529 INFO L409 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-01-24 11:38:57,529 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-01-24 11:38:57,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=166, Unknown=6, NotChecked=0, Total=210 [2018-01-24 11:38:57,530 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 15 states. [2018-01-24 11:38:57,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 11:38:57,958 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2018-01-24 11:38:57,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 11:38:57,958 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2018-01-24 11:38:57,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 11:38:57,960 INFO L225 Difference]: With dead ends: 63 [2018-01-24 11:38:57,960 INFO L226 Difference]: Without dead ends: 60 [2018-01-24 11:38:57,961 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=361, Unknown=6, NotChecked=0, Total=462 [2018-01-24 11:38:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-24 11:38:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-01-24 11:38:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-24 11:38:57,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-01-24 11:38:57,969 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 29 [2018-01-24 11:38:57,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 11:38:57,971 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-01-24 11:38:57,971 INFO L433 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-01-24 11:38:57,972 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-01-24 11:38:57,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 11:38:57,972 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 11:38:57,972 INFO L322 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] [2018-01-24 11:38:57,973 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]=== [2018-01-24 11:38:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1764023598, now seen corresponding path program 1 times [2018-01-24 11:38:57,973 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 11:38:57,973 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 11:38:57,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:57,974 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:57,974 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:57,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 11:38:57,994 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 11:38:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 11:38:58,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 11:38:58,222 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 [2018-01-24 11:38:58,230 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 11:38:58,254 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 11:38:58,269 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 6 treesize of output 5 [2018-01-24 11:38:58,270 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 11:38:58,273 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 11:38:58,274 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-01-24 11:38:58,445 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|build_nondet_String_#t~malloc1.base| Int)) (= (store |c_old(#length)| |build_nondet_String_#t~malloc1.base| 1) |c_#length|)) is different from true [2018-01-24 11:38:58,453 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 [2018-01-24 11:38:58,454 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 11:38:58,461 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. [2018-01-24 11:38:58,461 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:17 [2018-01-24 11:38:58,594 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2018-01-24 11:38:58,615 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-24 11:38:58,615 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2018-01-24 11:38:58,615 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-24 11:38:58,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-24 11:38:58,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=633, Unknown=1, NotChecked=50, Total=756 [2018-01-24 11:38:58,616 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 28 states. [2018-01-24 11:38:59,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 11:38:59,936 INFO L93 Difference]: Finished difference Result 155 states and 177 transitions. [2018-01-24 11:38:59,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-24 11:38:59,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 29 [2018-01-24 11:38:59,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 11:38:59,940 INFO L225 Difference]: With dead ends: 155 [2018-01-24 11:38:59,941 INFO L226 Difference]: Without dead ends: 152 [2018-01-24 11:38:59,942 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=244, Invalid=1739, Unknown=1, NotChecked=86, Total=2070 [2018-01-24 11:38:59,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-24 11:38:59,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 60. [2018-01-24 11:38:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-24 11:38:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2018-01-24 11:38:59,953 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 29 [2018-01-24 11:38:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 11:38:59,954 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2018-01-24 11:38:59,954 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-24 11:38:59,954 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2018-01-24 11:38:59,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-24 11:38:59,955 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 11:38:59,956 INFO L322 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] [2018-01-24 11:38:59,956 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]=== [2018-01-24 11:38:59,956 INFO L82 PathProgramCache]: Analyzing trace with hash -464489331, now seen corresponding path program 1 times [2018-01-24 11:38:59,956 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-24 11:38:59,956 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-24 11:38:59,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:59,957 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 11:38:59,957 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 11:38:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 11:38:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 11:39:00,014 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 11:39:00,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 11:39:00 BoogieIcfgContainer [2018-01-24 11:39:00,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 11:39:00,047 INFO L168 Benchmark]: Toolchain (without parser) took 4444.91 ms. Allocated memory was 303.6 MB in the beginning and 520.1 MB in the end (delta: 216.5 MB). Free memory was 263.6 MB in the beginning and 482.2 MB in the end (delta: -218.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 11:39:00,048 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 11:39:00,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.45 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 252.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 11:39:00,048 INFO L168 Benchmark]: Boogie Preprocessor took 35.34 ms. Allocated memory is still 303.6 MB. Free memory was 252.4 MB in the beginning and 250.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 11:39:00,048 INFO L168 Benchmark]: RCFGBuilder took 319.46 ms. Allocated memory is still 303.6 MB. Free memory was 250.4 MB in the beginning and 229.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 5.3 GB. [2018-01-24 11:39:00,049 INFO L168 Benchmark]: TraceAbstraction took 3874.28 ms. Allocated memory was 303.6 MB in the beginning and 520.1 MB in the end (delta: 216.5 MB). Free memory was 229.8 MB in the beginning and 482.2 MB in the end (delta: -252.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 11:39:00,050 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 209.45 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 252.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.34 ms. Allocated memory is still 303.6 MB. Free memory was 252.4 MB in the beginning and 250.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 319.46 ms. Allocated memory is still 303.6 MB. Free memory was 250.4 MB in the beginning and 229.8 MB in the end (delta: 20.6 MB). Peak memory consumption was 20.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3874.28 ms. Allocated memory was 303.6 MB in the beginning and 520.1 MB in the end (delta: 216.5 MB). Free memory was 229.8 MB in the beginning and 482.2 MB in the end (delta: -252.4 MB). There was no memory consumed. 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))={5:0}] [L545] char* nondetString = (char*) malloc(length * sizeof(char)); VAL [length=1, malloc(length * sizeof(char))={5:0}, nondetString={5:0}] [L546] FCALL nondetString[length-1] = '\0' VAL [length=1, malloc(length * sizeof(char))={5:0}, nondetString={5:0}] [L547] RET return nondetString; VAL [\result={5:0}, length=1, malloc(length * sizeof(char))={5:0}, nondetString={5:0}] [L566] EXPR build_nondet_String() VAL [build_nondet_String()={5:0}, s1={3:0}] [L566] char* s2 = build_nondet_String(); [L567] CALL cstrpbrk(s1,s2) VAL [s1={3:0}, s2={5:0}] [L551] const char *sc1; [L552] const char *s; [L553] int c; [L554] sc1 = s1 VAL [s1={3:0}, s1={3:0}, s2={5:0}, s2={5:0}, sc1={3:0}] [L554] EXPR, FCALL \read(*sc1) VAL [\read(*sc1)=0, s1={3:0}, s1={3:0}, s2={5:0}, s2={5:0}, sc1={3:0}] [L554] COND FALSE !(*sc1 != '\0') [L562] RET return 0; VAL [\result={0:0}, s1={3:0}, s1={3:0}, s2={5:0}, s2={5:0}, sc1={3:0}] [L567] cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={3:0}, s2={5:0}] [L567] FCALL cstrpbrk(s1,s2) VAL [cstrpbrk(s1,s2)={0:0}, s1={3:0}, s2={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 19 error locations. UNSAFE Result, 3.8s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 2.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 199 SDtfs, 620 SDslu, 510 SDs, 0 SdLazy, 1287 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 95 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 132 ConstructedInterpolants, 7 QuantifiedInterpolants, 22892 SizeOfPredicates, 17 NumberOfNonLiveVariables, 274 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 15/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: 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.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_11-39-00-056.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.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_11-39-00-056.csv Received shutdown request...