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/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:21:32,792 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:21:32,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:21:32,833 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:21:32,833 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:21:32,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:21:32,836 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:21:32,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:21:32,839 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:21:32,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:21:32,840 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:21:32,840 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:21:32,840 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:21:32,841 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:21:32,842 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:21:32,845 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:21:32,847 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:21:32,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:21:32,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:21:32,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:21:32,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:21:32,860 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:21:32,870 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:21:32,871 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:21:32,871 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:21:32,872 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:21:32,872 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:21:32,872 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:21:32,872 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:21:32,873 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:21:32,873 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:21:32,873 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:21:32,874 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:21:32,874 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:21:32,874 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:21:32,874 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:21:32,874 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:21:32,874 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:21:32,875 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:21:32,875 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:21:32,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:21:32,875 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:21:32,875 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:21:32,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:21:32,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:21:32,876 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:21:32,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:21:32,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:21:32,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:21:32,877 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:21:32,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:21:32,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:21:32,877 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:21:32,878 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:21:32,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:21:32,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:21:32,878 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:21:32,879 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:21:32,879 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:21:32,914 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:21:32,927 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:21:32,931 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:21:32,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:21:32,933 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:21:32,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-01-23 14:21:33,108 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:21:33,113 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:21:33,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:21:33,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:21:33,119 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:21:33,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533d743e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33, skipping insertion in model container [2018-01-23 14:21:33,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,136 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:21:33,171 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:21:33,297 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:21:33,313 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:21:33,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33 WrapperNode [2018-01-23 14:21:33,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:21:33,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:21:33,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:21:33,322 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:21:33,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (1/1) ... [2018-01-23 14:21:33,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:21:33,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:21:33,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:21:33,359 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:21:33,360 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (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 [2018-01-23 14:21:33,408 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:21:33,408 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:21:33,408 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrspn [2018-01-23 14:21:33,408 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure cstrspn [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:21:33,409 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:21:33,410 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:21:33,600 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:21:33,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:21:33 BoogieIcfgContainer [2018-01-23 14:21:33,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:21:33,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:21:33,602 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:21:33,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:21:33,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:21:33" (1/3) ... [2018-01-23 14:21:33,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4055cc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:21:33, skipping insertion in model container [2018-01-23 14:21:33,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:21:33" (2/3) ... [2018-01-23 14:21:33,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4055cc9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:21:33, skipping insertion in model container [2018-01-23 14:21:33,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:21:33" (3/3) ... [2018-01-23 14:21:33,607 INFO L105 eAbstractionObserver]: Analyzing ICFG cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-01-23 14:21:33,613 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:21:33,621 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-23 14:21:33,660 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:33,660 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:33,660 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:33,660 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:33,661 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:33,661 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:33,661 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:33,661 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:21:33,661 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:33,682 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-23 14:21:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:21:33,688 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:33,689 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:21:33,690 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:21:33,695 INFO L82 PathProgramCache]: Analyzing trace with hash 109556, now seen corresponding path program 1 times [2018-01-23 14:21:33,697 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:33,698 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:33,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:33,742 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:33,742 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:33,789 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:21:33,795 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:33,800 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:33,800 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:33,800 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:33,801 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:33,801 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:33,801 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:33,801 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:33,801 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:21:33,801 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:33,802 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-23 14:21:33,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-23 14:21:33,804 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:33,804 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:21:33,804 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:33,804 INFO L82 PathProgramCache]: Analyzing trace with hash -399039101, now seen corresponding path program 1 times [2018-01-23 14:21:33,804 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:33,805 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:33,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:33,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:33,806 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:33,842 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:21:33,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:33,894 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:33,894 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:21:33,895 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:21:33,908 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:21:33,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:21:33,911 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-01-23 14:21:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:34,009 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2018-01-23 14:21:34,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:21:34,011 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-01-23 14:21:34,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:34,023 INFO L225 Difference]: With dead ends: 76 [2018-01-23 14:21:34,023 INFO L226 Difference]: Without dead ends: 43 [2018-01-23 14:21:34,026 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:21:34,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-23 14:21:34,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-23 14:21:34,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-23 14:21:34,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-01-23 14:21:34,060 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2018-01-23 14:21:34,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:34,060 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-01-23 14:21:34,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:21:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-01-23 14:21:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:21:34,061 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:34,061 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:21:34,061 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:21:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1887771048, now seen corresponding path program 1 times [2018-01-23 14:21:34,062 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:34,062 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:34,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:34,063 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:34,063 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:21:34,125 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:21:34,134 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:34,137 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:34,139 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:34,139 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:21:34,153 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:34,153 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:34,153 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:34,153 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:34,153 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:34,154 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:34,154 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:34,154 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:21:34,154 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-23 14:21:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-23 14:21:34,158 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:34,158 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:21:34,158 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1532543956, now seen corresponding path program 1 times [2018-01-23 14:21:34,158 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:34,158 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:34,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:34,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:34,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:34,177 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:21:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:34,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:34,201 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:21:34,201 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:21:34,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:21:34,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:21:34,202 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-01-23 14:21:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:34,208 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2018-01-23 14:21:34,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:21:34,209 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-23 14:21:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:34,210 INFO L225 Difference]: With dead ends: 76 [2018-01-23 14:21:34,210 INFO L226 Difference]: Without dead ends: 41 [2018-01-23 14:21:34,211 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:21:34,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-23 14:21:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-01-23 14:21:34,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-23 14:21:34,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-01-23 14:21:34,217 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 26 [2018-01-23 14:21:34,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:34,218 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-01-23 14:21:34,218 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:21:34,218 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-01-23 14:21:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-23 14:21:34,219 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:34,219 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:21:34,219 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:21:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1315929401, now seen corresponding path program 1 times [2018-01-23 14:21:34,220 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:34,220 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:34,221 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:34,221 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:34,221 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:34,244 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:21:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:34,618 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:34,618 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-23 14:21:34,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-23 14:21:34,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-23 14:21:34,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:21:34,619 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 9 states. [2018-01-23 14:21:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:35,058 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2018-01-23 14:21:35,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:21:35,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-01-23 14:21:35,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:35,059 INFO L225 Difference]: With dead ends: 41 [2018-01-23 14:21:35,059 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:21:35,061 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:21:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:21:35,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:21:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:21:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:21:35,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-01-23 14:21:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:35,062 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:21:35,062 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-23 14:21:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:21:35,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:21:35,066 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:21:35,066 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:21:35,066 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:21:35,066 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:21:35,067 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:21:35,067 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:21:35,067 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:21:35,067 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrspnErr0EnsuresViolation======== [2018-01-23 14:21:35,067 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:21:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-01-23 14:21:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:21:35,070 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:21:35,070 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:21:35,070 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrspnErr0EnsuresViolation]=== [2018-01-23 14:21:35,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1650213975, now seen corresponding path program 1 times [2018-01-23 14:21:35,071 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:21:35,071 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:21:35,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:35,072 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:21:35,072 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:21:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:21:35,085 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:21:35,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:21:35,100 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:21:35,100 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:21:35,100 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:21:35,100 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:21:35,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:21:35,101 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-01-23 14:21:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:21:35,106 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2018-01-23 14:21:35,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:21:35,106 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-23 14:21:35,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:21:35,107 INFO L225 Difference]: With dead ends: 76 [2018-01-23 14:21:35,107 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:21:35,108 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:21:35,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:21:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:21:35,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:21:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:21:35,109 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-01-23 14:21:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:21:35,109 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:21:35,109 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:21:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:21:35,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:21:35,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:21:35 BoogieIcfgContainer [2018-01-23 14:21:35,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:21:35,114 INFO L168 Benchmark]: Toolchain (without parser) took 2005.37 ms. Allocated memory was 305.1 MB in the beginning and 467.1 MB in the end (delta: 162.0 MB). Free memory was 263.4 MB in the beginning and 350.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 75.5 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:35,115 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 305.1 MB. Free memory is still 269.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:21:35,115 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.62 ms. Allocated memory is still 305.1 MB. Free memory was 262.5 MB in the beginning and 252.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:35,116 INFO L168 Benchmark]: Boogie Preprocessor took 37.41 ms. Allocated memory is still 305.1 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. [2018-01-23 14:21:35,116 INFO L168 Benchmark]: RCFGBuilder took 242.22 ms. Allocated memory is still 305.1 MB. Free memory was 250.4 MB in the beginning and 232.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:35,116 INFO L168 Benchmark]: TraceAbstraction took 1511.10 ms. Allocated memory was 305.1 MB in the beginning and 467.1 MB in the end (delta: 162.0 MB). Free memory was 232.8 MB in the beginning and 350.0 MB in the end (delta: -117.2 MB). Peak memory consumption was 44.8 MB. Max. memory is 5.3 GB. [2018-01-23 14:21:35,118 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 305.1 MB. Free memory is still 269.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 206.62 ms. Allocated memory is still 305.1 MB. Free memory was 262.5 MB in the beginning and 252.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.41 ms. Allocated memory is still 305.1 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 242.22 ms. Allocated memory is still 305.1 MB. Free memory was 250.4 MB in the beginning and 232.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1511.10 ms. Allocated memory was 305.1 MB in the beginning and 467.1 MB in the end (delta: 162.0 MB). Free memory was 232.8 MB in the beginning and 350.0 MB in the end (delta: -117.2 MB). Peak memory consumption was 44.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 4 procedures, 47 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 VAL [length1=1, length2=0] [L561] COND TRUE length2 < 1 [L562] length2 = 1 VAL [length1=1, length2=1] [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1] [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, length1=1, length2=1, nondetString1={3:0}] [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}] [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L566] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L567] FCALL nondetString2[length2-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L568] CALL, EXPR cstrspn(nondetString1,nondetString2) VAL [s1={3:0}, s2={4:0}] [L542] const char *sc1; [L543] const char *s; [L544] int c; [L545] sc1 = s1 VAL [s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L545] EXPR, FCALL \read(*sc1) VAL [\read(*sc1)=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L545] COND FALSE !(*sc1 != '\0') [L553] RET return sc1 - s1; VAL [\result=0, s1={3:0}, s1={3:0}, s2={4:0}, s2={4:0}, sc1={3:0}] [L568] EXPR cstrspn(nondetString1,nondetString2) VAL [__builtin_alloca (length1 * sizeof(char))={3:0}, __builtin_alloca (length2 * sizeof(char))={4:0}, cstrspn(nondetString1,nondetString2)=0, length1=1, length2=1, nondetString1={3:0}, nondetString2={4:0}] [L568] return cstrspn(nondetString1,nondetString2); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 47 locations, 4 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 555]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 4 procedures, 47 locations, 4 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 30 SDslu, 37 SDs, 0 SdLazy, 229 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 6295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: cstrspnErr0EnsuresViolation CFG has 4 procedures, 47 locations, 4 error locations. SAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 51 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-21-35-128.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-21-35-128.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-21-35-128.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-21-35-128.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrspn-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-21-35-128.csv Received shutdown request...