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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 10:52:23,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 10:52:23,888 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 10:52:23,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 10:52:23,899 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 10:52:23,900 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 10:52:23,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 10:52:23,902 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 10:52:23,904 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 10:52:23,905 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 10:52:23,906 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 10:52:23,906 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 10:52:23,907 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 10:52:23,908 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 10:52:23,908 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 10:52:23,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 10:52:23,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 10:52:23,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 10:52:23,915 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 10:52:23,916 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 10:52:23,918 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 10:52:23,922 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 10:52:23,922 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 10:52:23,923 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-02 10:52:23,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 10:52:23,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 10:52:23,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 10:52:23,934 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 10:52:23,935 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 10:52:23,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 10:52:23,935 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 10:52:23,935 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 10:52:23,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 10:52:23,935 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 10:52:23,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 10:52:23,936 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 10:52:23,936 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 10:52:23,936 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 10:52:23,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 10:52:23,936 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 10:52:23,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 10:52:23,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 10:52:23,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 10:52:23,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 10:52:23,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 10:52:23,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 10:52:23,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-02 10:52:23,937 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-02 10:52:23,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 10:52:23,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 10:52:23,979 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 10:52:23,982 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 10:52:23,983 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 10:52:23,984 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 10:52:23,984 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-02-02 10:52:24,118 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 10:52:24,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 10:52:24,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 10:52:24,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 10:52:24,128 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 10:52:24,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f34542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24, skipping insertion in model container [2018-02-02 10:52:24,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,147 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:52:24,178 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:52:24,268 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:52:24,286 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:52:24,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24 WrapperNode [2018-02-02 10:52:24,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 10:52:24,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 10:52:24,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 10:52:24,294 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 10:52:24,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (1/1) ... [2018-02-02 10:52:24,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 10:52:24,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 10:52:24,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 10:52:24,330 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 10:52:24,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (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 [2018-02-02 10:52:24,367 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 10:52:24,368 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 10:52:24,368 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-02-02 10:52:24,368 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 10:52:24,368 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 10:52:24,525 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 10:52:24,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:52:24 BoogieIcfgContainer [2018-02-02 10:52:24,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 10:52:24,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 10:52:24,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 10:52:24,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 10:52:24,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 10:52:24" (1/3) ... [2018-02-02 10:52:24,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35abe36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:52:24, skipping insertion in model container [2018-02-02 10:52:24,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:52:24" (2/3) ... [2018-02-02 10:52:24,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35abe36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:52:24, skipping insertion in model container [2018-02-02 10:52:24,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:52:24" (3/3) ... [2018-02-02 10:52:24,531 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-02-02 10:52:24,537 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 10:52:24,542 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-02 10:52:24,576 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 10:52:24,576 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 10:52:24,576 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-02 10:52:24,576 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 10:52:24,577 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 10:52:24,577 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 10:52:24,577 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 10:52:24,577 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 10:52:24,577 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 10:52:24,586 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-02-02 10:52:24,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-02-02 10:52:24,596 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:52:24,597 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:52:24,597 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-02-02 10:52:24,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2055638365, 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 [2018-02-02 10:52:24,612 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:52:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:24,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:24,713 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:52:24,713 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 10:52:24,714 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:52:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:24,715 INFO L182 omatonBuilderFactory]: Interpolants [57#true, 58#false, 62#(= |#valid| |old(#valid)|), 63#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-02 10:52:24,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:24,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 10:52:24,727 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 10:52:24,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:52:24,730 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2018-02-02 10:52:24,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:52:24,816 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2018-02-02 10:52:24,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 10:52:24,818 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-02-02 10:52:24,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:52:24,827 INFO L225 Difference]: With dead ends: 55 [2018-02-02 10:52:24,827 INFO L226 Difference]: Without dead ends: 51 [2018-02-02 10:52:24,829 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-02-02 10:52:24,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-02-02 10:52:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-02-02 10:52:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 10:52:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2018-02-02 10:52:24,853 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 11 [2018-02-02 10:52:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:52:24,853 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2018-02-02 10:52:24,853 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 10:52:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2018-02-02 10:52:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 10:52:24,853 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:52:24,854 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:52:24,854 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-02-02 10:52:24,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1872133330, 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 [2018-02-02 10:52:24,858 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:52:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:24,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:24,923 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:52:24,923 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 10:52:24,923 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:52:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:24,923 INFO L182 omatonBuilderFactory]: Interpolants [176#(and (< 0 main_~length2~0) (= main_~length1~0 1)), 177#(< main_~length1~0 (+ main_~n~0 main_~length2~0)), 178#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 170#true, 171#false, 175#(or (< main_~length2~0 1) (= main_~length1~0 1))] [2018-02-02 10:52:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:24,924 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 10:52:24,925 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 10:52:24,925 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 10:52:24,925 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 6 states. [2018-02-02 10:52:25,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:52:25,114 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2018-02-02 10:52:25,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 10:52:25,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-02 10:52:25,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:52:25,115 INFO L225 Difference]: With dead ends: 54 [2018-02-02 10:52:25,115 INFO L226 Difference]: Without dead ends: 52 [2018-02-02 10:52:25,116 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-02-02 10:52:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-02-02 10:52:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-02-02 10:52:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-02-02 10:52:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2018-02-02 10:52:25,119 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 15 [2018-02-02 10:52:25,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:52:25,119 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2018-02-02 10:52:25,119 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 10:52:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2018-02-02 10:52:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 10:52:25,119 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:52:25,120 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:52:25,120 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-02-02 10:52:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1062786704, 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 [2018-02-02 10:52:25,133 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:52:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:25,226 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:52:25,226 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 10:52:25,226 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:52:25,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:25,226 INFO L182 omatonBuilderFactory]: Interpolants [291#true, 292#false, 296#(= main_~length1~0 1), 297#(and (= 1 main_~length2~0) (= main_~length1~0 1)), 298#(< main_~length1~0 (+ main_~n~0 main_~length2~0)), 299#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-02 10:52:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:25,227 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 10:52:25,227 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 10:52:25,227 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 10:52:25,227 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand 6 states. [2018-02-02 10:52:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:52:25,348 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2018-02-02 10:52:25,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 10:52:25,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-02 10:52:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:52:25,349 INFO L225 Difference]: With dead ends: 54 [2018-02-02 10:52:25,349 INFO L226 Difference]: Without dead ends: 51 [2018-02-02 10:52:25,350 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-02-02 10:52:25,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-02-02 10:52:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-02-02 10:52:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-02-02 10:52:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-02-02 10:52:25,353 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 15 [2018-02-02 10:52:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:52:25,354 INFO L432 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-02-02 10:52:25,354 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 10:52:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-02-02 10:52:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 10:52:25,354 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:52:25,354 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:52:25,355 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-02-02 10:52:25,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1192074960, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 10:52:25,359 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:52:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:25,369 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-02 10:52:25,372 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-02 10:52:25,373 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-02 10:52:25,374 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-02 10:52:25,374 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-02 10:52:25,396 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |c_#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)) is different from true [2018-02-02 10:52:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:25,435 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:52:25,436 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 10:52:25,436 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:52:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:25,436 INFO L182 omatonBuilderFactory]: Interpolants [416#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store |#valid| %1 1) (store %0 %1 1)) :qid itp)) :qid itp)), 417#(= 1 (select |#valid| |main_#t~malloc11.base|)), 418#(= 1 (select |#valid| main_~nondetString1~0.base)), 419#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 411#true, 412#false] [2018-02-02 10:52:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:52:25,437 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 10:52:25,437 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 10:52:25,437 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2018-02-02 10:52:25,437 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 6 states. [2018-02-02 10:52:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:52:25,543 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2018-02-02 10:52:25,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 10:52:25,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-02 10:52:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:52:25,545 INFO L225 Difference]: With dead ends: 65 [2018-02-02 10:52:25,545 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 10:52:25,545 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=28, Unknown=2, NotChecked=10, Total=56 [2018-02-02 10:52:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 10:52:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 58. [2018-02-02 10:52:25,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-02-02 10:52:25,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2018-02-02 10:52:25,552 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 15 [2018-02-02 10:52:25,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:52:25,552 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2018-02-02 10:52:25,552 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 10:52:25,552 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2018-02-02 10:52:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 10:52:25,552 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:52:25,552 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:52:25,552 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation, cstrncatErr7RequiresViolation, cstrncatErr5RequiresViolation, cstrncatErr0RequiresViolation, cstrncatErr3RequiresViolation, cstrncatErr1RequiresViolation, cstrncatErr2RequiresViolation, cstrncatErr6RequiresViolation, cstrncatErr4RequiresViolation]=== [2018-02-02 10:52:25,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1192074959, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) [2018-02-02 10:52:25,556 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-02 10:52:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:52:25,580 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier WARNING: array quantifier WARNING: array quantifier WARNING: array quantifier Unsupported proof rule: (let ((a!1 (= (+ |main_#t~nondet8_4| (- 1) 0 (* (- 1) (select |#length_12| |main_#t~malloc11.base_10|))) (+ (- 1) |main_#t~nondet8_4| (* (- 1) (select |#length_12| |main_#t~malloc11.base_10|)))))) (rewrite a!1)) [2018-02-02 10:52:25,581 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 84 column 283: 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:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:196) 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) [2018-02-02 10:52:25,584 INFO L168 Benchmark]: Toolchain (without parser) took 1465.42 ms. Allocated memory was 397.9 MB in the beginning and 558.4 MB in the end (delta: 160.4 MB). Free memory was 352.0 MB in the beginning and 464.4 MB in the end (delta: -112.4 MB). Peak memory consumption was 48.0 MB. Max. memory is 5.3 GB. [2018-02-02 10:52:25,585 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 397.9 MB. Free memory is still 358.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 10:52:25,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.76 ms. Allocated memory is still 397.9 MB. Free memory was 352.0 MB in the beginning and 341.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:52:25,586 INFO L168 Benchmark]: Boogie Preprocessor took 35.65 ms. Allocated memory is still 397.9 MB. Free memory was 341.4 MB in the beginning and 340.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 10:52:25,586 INFO L168 Benchmark]: RCFGBuilder took 196.03 ms. Allocated memory is still 397.9 MB. Free memory was 340.1 MB in the beginning and 318.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. [2018-02-02 10:52:25,587 INFO L168 Benchmark]: TraceAbstraction took 1057.64 ms. Allocated memory was 397.9 MB in the beginning and 558.4 MB in the end (delta: 160.4 MB). Free memory was 317.6 MB in the beginning and 464.4 MB in the end (delta: -146.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:52:25,589 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 397.9 MB. Free memory is still 358.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 172.76 ms. Allocated memory is still 397.9 MB. Free memory was 352.0 MB in the beginning and 341.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.65 ms. Allocated memory is still 397.9 MB. Free memory was 341.4 MB in the beginning and 340.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 196.03 ms. Allocated memory is still 397.9 MB. Free memory was 340.1 MB in the beginning and 318.9 MB in the end (delta: 21.2 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1057.64 ms. Allocated memory was 397.9 MB in the beginning and 558.4 MB in the end (delta: 160.4 MB). Free memory was 317.6 MB in the beginning and 464.4 MB in the end (delta: -146.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 84 column 283: theory not supported by interpolation or bad proof de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 84 column 283: 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_cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_10-52-25-597.csv Received shutdown request...