java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 20:22:03,088 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 20:22:03,089 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 20:22:03,102 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 20:22:03,103 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 20:22:03,103 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 20:22:03,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 20:22:03,106 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 20:22:03,108 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 20:22:03,109 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 20:22:03,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 20:22:03,110 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 20:22:03,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 20:22:03,111 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 20:22:03,112 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 20:22:03,116 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 20:22:03,117 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 20:22:03,118 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 20:22:03,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 20:22:03,119 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 20:22:03,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 20:22:03,123 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 20:22:03,124 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 20:22:03,124 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-04 20:22:03,135 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 20:22:03,135 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 20:22:03,137 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 20:22:03,138 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 20:22:03,138 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 20:22:03,138 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 20:22:03,138 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 20:22:03,138 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 20:22:03,138 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 20:22:03,138 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 20:22:03,139 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 20:22:03,139 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 20:22:03,139 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 20:22:03,139 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 20:22:03,139 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 20:22:03,139 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 20:22:03,139 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 20:22:03,140 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 20:22:03,140 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 20:22:03,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:22:03,140 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 20:22:03,140 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 20:22:03,140 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 20:22:03,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:22:03,173 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 20:22:03,186 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 20:22:03,189 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 20:22:03,190 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 20:22:03,190 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 20:22:03,191 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-02-04 20:22:03,330 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 20:22:03,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 20:22:03,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 20:22:03,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 20:22:03,338 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 20:22:03,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c76d208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03, skipping insertion in model container [2018-02-04 20:22:03,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,356 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:22:03,384 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:22:03,518 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:22:03,539 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:22:03,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03 WrapperNode [2018-02-04 20:22:03,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 20:22:03,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 20:22:03,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 20:22:03,545 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 20:22:03,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... [2018-02-04 20:22:03,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 20:22:03,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 20:22:03,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 20:22:03,591 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 20:22:03,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:22:03,631 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 20:22:03,632 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 20:22:03,632 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-02-04 20:22:03,632 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 20:22:03,632 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-02-04 20:22:03,633 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 20:22:03,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 20:22:03,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 20:22:03,793 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 20:22:03,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:22:03 BoogieIcfgContainer [2018-02-04 20:22:03,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 20:22:03,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 20:22:03,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 20:22:03,796 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 20:22:03,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 08:22:03" (1/3) ... [2018-02-04 20:22:03,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224f2b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:22:03, skipping insertion in model container [2018-02-04 20:22:03,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:22:03" (2/3) ... [2018-02-04 20:22:03,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224f2b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:22:03, skipping insertion in model container [2018-02-04 20:22:03,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:22:03" (3/3) ... [2018-02-04 20:22:03,798 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i [2018-02-04 20:22:03,804 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 20:22:03,809 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-02-04 20:22:03,841 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 20:22:03,841 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 20:22:03,842 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 20:22:03,842 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 20:22:03,842 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 20:22:03,842 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 20:22:03,842 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 20:22:03,842 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 20:22:03,843 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 20:22:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-02-04 20:22:03,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:22:03,856 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:22:03,857 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:22:03,857 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 20:22:03,861 INFO L82 PathProgramCache]: Analyzing trace with hash -428881312, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:22:03,869 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:22:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:22:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:22:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:22:03,951 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:22:03,951 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 20:22:03,952 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:22:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:22:03,953 INFO L182 omatonBuilderFactory]: Interpolants [51#true, 52#false, 56#(= 1 (select |#valid| |main_#t~malloc11.base|)), 57#(= 1 (select |#valid| main_~nondetString~0.base)), 58#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 20:22:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:22:03,954 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 20:22:03,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 20:22:03,966 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-04 20:22:03,968 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 5 states. [2018-02-04 20:22:04,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:22:04,168 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2018-02-04 20:22:04,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-04 20:22:04,170 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-02-04 20:22:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:22:04,177 INFO L225 Difference]: With dead ends: 47 [2018-02-04 20:22:04,177 INFO L226 Difference]: Without dead ends: 44 [2018-02-04 20:22:04,179 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-04 20:22:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-04 20:22:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-02-04 20:22:04,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-02-04 20:22:04,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2018-02-04 20:22:04,204 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 13 [2018-02-04 20:22:04,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:22:04,204 INFO L432 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2018-02-04 20:22:04,204 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 20:22:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2018-02-04 20:22:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:22:04,204 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:22:04,204 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:22:04,204 INFO L371 AbstractCegarLoop]: === Iteration 2 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 20:22:04,205 INFO L82 PathProgramCache]: Analyzing trace with hash -428881311, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:22:04,211 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:22:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:22:04,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:22:04,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:22:04,292 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:22:04,293 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-04 20:22:04,293 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:22:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:22:04,293 INFO L182 omatonBuilderFactory]: Interpolants [160#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 152#true, 153#false, 157#(= 1 main_~length~0), 158#(and (= 1 main_~length~0) (= 0 |main_#t~malloc11.offset|) (= 1 (select |#length| |main_#t~malloc11.base|))), 159#(and (<= 1 (+ main_~nondetString~0.offset main_~length~0)) (<= (+ main_~nondetString~0.offset main_~length~0) (select |#length| main_~nondetString~0.base)))] [2018-02-04 20:22:04,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:22:04,295 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-04 20:22:04,295 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-04 20:22:04,295 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-04 20:22:04,295 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 6 states. [2018-02-04 20:22:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:22:04,469 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2018-02-04 20:22:04,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 20:22:04,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-02-04 20:22:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:22:04,472 INFO L225 Difference]: With dead ends: 58 [2018-02-04 20:22:04,472 INFO L226 Difference]: Without dead ends: 58 [2018-02-04 20:22:04,473 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-02-04 20:22:04,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-04 20:22:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2018-02-04 20:22:04,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-04 20:22:04,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2018-02-04 20:22:04,481 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 13 [2018-02-04 20:22:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:22:04,482 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2018-02-04 20:22:04,482 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-04 20:22:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2018-02-04 20:22:04,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-04 20:22:04,482 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:22:04,482 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:22:04,483 INFO L371 AbstractCegarLoop]: === Iteration 3 === [cstrncpyErr3RequiresViolation, cstrncpyErr5RequiresViolation, cstrncpyErr4RequiresViolation, cstrncpyErr2RequiresViolation, cstrncpyErr0RequiresViolation, cstrncpyErr1RequiresViolation, mainErr1RequiresViolation, mainErr2EnsuresViolation, mainErr0RequiresViolation]=== [2018-02-04 20:22:04,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1346126051, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:22:04,506 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:22:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:22:04,544 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: Unsupported proof rule: (let ((a!1 (= (+ |main_#t~nondet8_4| 0 (* (- 1) (select |#length_10| |main_#t~malloc11.base_10|))) (+ |main_#t~nondet8_4| (* (- 1) (select |#length_10| |main_#t~malloc11.base_10|)))))) (rewrite a!1)) [2018-02-04 20:22:04,544 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 79 column 269: theory not supported by interpolation or bad proof at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseInterpolants(Executor.java:255) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.readInterpolants(ScriptorWithGetInterpolants.java:136) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.getInterpolants(ScriptorWithGetInterpolants.java:64) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.getInterpolants(DiffWrapperScript.java:260) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:298) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedTraceAbstractionRefinementStrategy.getTraceCheck(FixedTraceAbstractionRefinementStrategy.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 20:22:04,547 INFO L168 Benchmark]: Toolchain (without parser) took 1216.95 ms. Allocated memory was 400.0 MB in the beginning and 425.2 MB in the end (delta: 25.2 MB). Free memory was 356.7 MB in the beginning and 385.0 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:22:04,548 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 400.0 MB. Free memory is still 362.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:22:04,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.73 ms. Allocated memory is still 400.0 MB. Free memory was 356.7 MB in the beginning and 346.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:22:04,549 INFO L168 Benchmark]: Boogie Preprocessor took 44.86 ms. Allocated memory is still 400.0 MB. Free memory was 346.1 MB in the beginning and 343.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:22:04,550 INFO L168 Benchmark]: RCFGBuilder took 203.12 ms. Allocated memory is still 400.0 MB. Free memory was 343.5 MB in the beginning and 323.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. [2018-02-04 20:22:04,550 INFO L168 Benchmark]: TraceAbstraction took 753.10 ms. Allocated memory was 400.0 MB in the beginning and 425.2 MB in the end (delta: 25.2 MB). Free memory was 323.7 MB in the beginning and 385.0 MB in the end (delta: -61.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:22:04,553 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 400.0 MB. Free memory is still 362.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.73 ms. Allocated memory is still 400.0 MB. Free memory was 356.7 MB in the beginning and 346.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 44.86 ms. Allocated memory is still 400.0 MB. Free memory was 346.1 MB in the beginning and 343.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 203.12 ms. Allocated memory is still 400.0 MB. Free memory was 343.5 MB in the beginning and 323.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 5.3 GB. * TraceAbstraction took 753.10 ms. Allocated memory was 400.0 MB in the beginning and 425.2 MB in the end (delta: 25.2 MB). Free memory was 323.7 MB in the beginning and 385.0 MB in the end (delta: -61.3 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 79 column 269: theory not supported by interpolation or bad proof de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 79 column 269: theory not supported by interpolation or bad proof: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncpy-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_20-22-04-561.csv Received shutdown request...