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_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:52:08,779 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:52:08,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:52:08,816 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:52:08,816 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:52:08,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:52:08,819 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:52:08,822 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:52:08,825 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:52:08,826 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:52:08,830 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:52:08,831 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:52:08,832 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:52:08,837 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:52:08,838 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:52:08,845 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:52:08,847 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:52:08,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:52:08,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:52:08,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:52:08,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:52:08,898 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 02:52:08,899 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 02:52:08,899 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 02:52:08,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:52:08,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:52:08,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:52:08,928 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:52:08,932 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:52:08,932 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:52:08,933 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:52:08,933 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:52:08,933 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:52:08,934 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:52:08,934 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:52:08,934 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:52:08,934 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:52:08,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:52:08,935 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:52:08,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:52:08,935 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:52:08,935 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:52:08,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:52:08,936 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:52:08,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:52:08,937 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:52:08,938 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:52:08,938 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:52:08,938 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:52:08,938 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:52:08,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:52:08,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:52:08,939 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:52:08,939 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:52:08,939 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:52:08,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:52:08,940 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:52:08,940 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:52:08,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:52:08,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:52:08,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:52:08,941 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:52:08,942 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:52:08,943 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:52:09,008 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:52:09,024 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:52:09,030 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:52:09,033 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:52:09,034 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:52:09,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i [2018-01-21 02:52:09,209 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:52:09,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:52:09,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:52:09,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:52:09,224 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:52:09,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@553c86d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09, skipping insertion in model container [2018-01-21 02:52:09,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,250 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:52:09,305 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:52:09,433 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:52:09,458 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:52:09,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09 WrapperNode [2018-01-21 02:52:09,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:52:09,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:52:09,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:52:09,468 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:52:09,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (1/1) ... [2018-01-21 02:52:09,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:52:09,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:52:09,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:52:09,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:52:09,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (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 [2018-01-21 02:52:09,566 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:52:09,567 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:52:09,567 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrreplace [2018-01-21 02:52:09,567 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:52:09,567 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 02:52:09,567 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 02:52:09,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:52:09,567 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:52:09,567 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 02:52:09,567 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:52:09,568 INFO L128 BoogieDeclarations]: Found specification of procedure cstrreplace [2018-01-21 02:52:09,568 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:52:09,568 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:52:09,568 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:52:09,803 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:52:09,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:52:09 BoogieIcfgContainer [2018-01-21 02:52:09,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:52:09,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:52:09,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:52:09,807 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:52:09,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:52:09" (1/3) ... [2018-01-21 02:52:09,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44735c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:52:09, skipping insertion in model container [2018-01-21 02:52:09,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:09" (2/3) ... [2018-01-21 02:52:09,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44735c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:52:09, skipping insertion in model container [2018-01-21 02:52:09,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:52:09" (3/3) ... [2018-01-21 02:52:09,810 INFO L105 eAbstractionObserver]: Analyzing ICFG strreplace-alloca_true-valid-memsafety_true-termination.i [2018-01-21 02:52:09,818 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:52:09,825 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 02:52:09,879 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:52:09,879 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:52:09,879 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:52:09,879 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:52:09,879 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:52:09,880 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:52:09,880 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:52:09,880 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 02:52:09,882 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:52:09,905 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 02:52:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 02:52:09,914 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:09,916 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 02:52:09,918 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 02:52:09,924 INFO L82 PathProgramCache]: Analyzing trace with hash 79765, now seen corresponding path program 1 times [2018-01-21 02:52:09,927 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:09,993 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:09,994 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:09,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:09,994 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:10,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:52:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:52:10,064 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:52:10,073 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:52:10,081 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:52:10,081 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:52:10,081 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:52:10,082 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:52:10,082 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:52:10,082 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:52:10,082 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:52:10,082 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrreplaceErr0EnsuresViolation======== [2018-01-21 02:52:10,082 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:52:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 02:52:10,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 02:52:10,086 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:10,086 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:52:10,086 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr0EnsuresViolation]=== [2018-01-21 02:52:10,087 INFO L82 PathProgramCache]: Analyzing trace with hash -798156841, now seen corresponding path program 1 times [2018-01-21 02:52:10,087 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:10,088 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,088 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:10,088 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,088 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:52:10,139 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:52:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:52:10,196 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:52:10,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:52:10,196 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:52:10,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:52:10,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:52:10,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:52:10,216 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 02:52:10,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:52:10,243 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 02:52:10,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:52:10,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-21 02:52:10,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:52:10,254 INFO L225 Difference]: With dead ends: 47 [2018-01-21 02:52:10,254 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:52:10,257 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 [2018-01-21 02:52:10,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:52:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:52:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:52:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:52:10,358 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-01-21 02:52:10,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:52:10,358 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:52:10,358 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:52:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:52:10,359 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:52:10,361 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:52:10,362 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:52:10,362 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:52:10,362 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:52:10,362 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:52:10,362 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:52:10,362 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:52:10,362 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 02:52:10,363 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:52:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 02:52:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 02:52:10,365 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:10,366 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] [2018-01-21 02:52:10,366 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:52:10,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1986589424, now seen corresponding path program 1 times [2018-01-21 02:52:10,366 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:10,367 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,367 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:10,368 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,368 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:52:10,386 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:52:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:52:10,408 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:52:10,408 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:52:10,408 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:52:10,409 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:52:10,409 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:52:10,409 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:52:10,409 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 02:52:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:52:10,414 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 02:52:10,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:52:10,414 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-01-21 02:52:10,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:52:10,418 INFO L225 Difference]: With dead ends: 47 [2018-01-21 02:52:10,418 INFO L226 Difference]: Without dead ends: 31 [2018-01-21 02:52:10,419 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 [2018-01-21 02:52:10,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-01-21 02:52:10,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-01-21 02:52:10,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-21 02:52:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-01-21 02:52:10,431 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2018-01-21 02:52:10,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:52:10,431 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-01-21 02:52:10,431 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:52:10,431 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-01-21 02:52:10,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 02:52:10,432 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:10,433 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] [2018-01-21 02:52:10,433 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 02:52:10,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1726540896, now seen corresponding path program 1 times [2018-01-21 02:52:10,433 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:10,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,435 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:10,435 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,435 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:52:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 02:52:10,503 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 02:52:10,510 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:52:10,513 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:52:10,514 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:52:10,515 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 02:52:10,525 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:52:10,526 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:52:10,526 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:52:10,526 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:52:10,526 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:52:10,526 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:52:10,526 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:52:10,526 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 02:52:10,527 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:52:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 02:52:10,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 02:52:10,529 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:10,530 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] [2018-01-21 02:52:10,530 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 02:52:10,530 INFO L82 PathProgramCache]: Analyzing trace with hash 462401894, now seen corresponding path program 1 times [2018-01-21 02:52:10,530 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:10,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,531 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:10,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,531 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:52:10,546 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:52:10,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:52:10,567 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:52:10,567 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:52:10,567 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:52:10,567 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:52:10,568 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:52:10,568 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:52:10,568 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 02:52:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:52:10,572 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 02:52:10,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:52:10,573 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 02:52:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:52:10,574 INFO L225 Difference]: With dead ends: 47 [2018-01-21 02:52:10,574 INFO L226 Difference]: Without dead ends: 29 [2018-01-21 02:52:10,574 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 [2018-01-21 02:52:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-21 02:52:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-21 02:52:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-21 02:52:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-01-21 02:52:10,580 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2018-01-21 02:52:10,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:52:10,580 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-01-21 02:52:10,580 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:52:10,580 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-01-21 02:52:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 02:52:10,581 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:10,581 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] [2018-01-21 02:52:10,582 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 02:52:10,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1369392854, now seen corresponding path program 1 times [2018-01-21 02:52:10,582 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:10,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,583 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:10,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:10,583 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:52:10,605 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:52:10,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:52:10,724 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:52:10,724 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 02:52:10,724 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:52:10,725 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 02:52:10,725 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 02:52:10,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 02:52:10,726 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2018-01-21 02:52:10,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:52:10,864 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-01-21 02:52:10,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 02:52:10,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-01-21 02:52:10,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:52:10,866 INFO L225 Difference]: With dead ends: 29 [2018-01-21 02:52:10,866 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:52:10,867 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 02:52:10,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:52:10,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:52:10,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:52:10,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:52:10,868 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-01-21 02:52:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:52:10,868 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:52:10,868 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 02:52:10,868 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:52:10,868 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:52:10,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 02:52:10 BoogieIcfgContainer [2018-01-21 02:52:10,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 02:52:10,871 INFO L168 Benchmark]: Toolchain (without parser) took 1661.39 ms. Allocated memory was 295.7 MB in the beginning and 442.5 MB in the end (delta: 146.8 MB). Free memory was 254.4 MB in the beginning and 378.4 MB in the end (delta: -123.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 5.3 GB. [2018-01-21 02:52:10,872 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 295.7 MB. Free memory is still 260.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:52:10,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.54 ms. Allocated memory is still 295.7 MB. Free memory was 254.4 MB in the beginning and 244.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:52:10,873 INFO L168 Benchmark]: Boogie Preprocessor took 41.12 ms. Allocated memory is still 295.7 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 02:52:10,873 INFO L168 Benchmark]: RCFGBuilder took 295.05 ms. Allocated memory is still 295.7 MB. Free memory was 242.5 MB in the beginning and 227.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-21 02:52:10,873 INFO L168 Benchmark]: TraceAbstraction took 1065.40 ms. Allocated memory was 295.7 MB in the beginning and 442.5 MB in the end (delta: 146.8 MB). Free memory was 227.5 MB in the beginning and 378.4 MB in the end (delta: -150.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 02:52:10,875 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 295.7 MB. Free memory is still 260.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 250.54 ms. Allocated memory is still 295.7 MB. Free memory was 254.4 MB in the beginning and 244.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.12 ms. Allocated memory is still 295.7 MB. Free memory was 244.5 MB in the beginning and 242.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 295.05 ms. Allocated memory is still 295.7 MB. Free memory was 242.5 MB in the beginning and 227.5 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1065.40 ms. Allocated memory was 295.7 MB in the beginning and 442.5 MB in the end (delta: 146.8 MB). Free memory was 227.5 MB in the beginning and 378.4 MB in the end (delta: -150.8 MB). There was no memory consumed. 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, 35 locations, 4 error locations. UNSAFE Result, 0.2s 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=35occurred 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 - 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: cstrreplaceErr0EnsuresViolation CFG has 4 procedures, 35 locations, 4 error locations. SAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 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=35occurred 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 225 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L554] int length1 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 VAL [length1=1] [L558] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) VAL [__builtin_alloca (length1 * sizeof(char))={257:0}, length1=1] [L558] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); VAL [__builtin_alloca (length1 * sizeof(char))={257:0}, length1=1, nondetString1={257:0}] [L559] FCALL nondetString1[length1-1] = '\0' VAL [__builtin_alloca (length1 * sizeof(char))={257:0}, length1=1, nondetString1={257:0}] [L560] CALL, EXPR cstrreplace(nondetString1, (char)__VERIFIER_nondet_int(), (char)__VERIFIER_nondet_int()) VAL [\old(new)=-1, \old(old)=-1, s={257:0}] [L542] char *p = s; [L543] int numReplaced = 0; VAL [\old(new)=-1, \old(old)=-1, new=-1, numReplaced=0, old=-1, p={257:0}, s={257:0}, s={257:0}] [L544] EXPR, FCALL \read(*p) VAL [\old(new)=-1, \old(old)=-1, \read(*p)=0, new=-1, numReplaced=0, old=-1, p={257:0}, s={257:0}, s={257:0}] [L544] COND FALSE !(*p != '\0') [L551] RET return numReplaced; VAL [\old(new)=-1, \old(old)=-1, \result=0, new=-1, numReplaced=0, old=-1, p={257:0}, s={257:0}, s={257:0}] [L560] EXPR cstrreplace(nondetString1, (char)__VERIFIER_nondet_int(), (char)__VERIFIER_nondet_int()) VAL [__builtin_alloca (length1 * sizeof(char))={257:0}, __VERIFIER_nondet_int()=-1, __VERIFIER_nondet_int()=-1, cstrreplace(nondetString1, (char)__VERIFIER_nondet_int(), (char)__VERIFIER_nondet_int())=0, length1=1, nondetString1={257:0}] [L560] return cstrreplace(nondetString1, (char)__VERIFIER_nondet_int(), (char)__VERIFIER_nondet_int()); - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 4 procedures, 35 locations, 4 error locations. UNSAFE Result, 0.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 36 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=35occurred 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, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 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: 553]: 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, 35 locations, 4 error locations. SAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 SDtfs, 14 SDslu, 6 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2468 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 RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_02-52-10-883.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_02-52-10-883.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_02-52-10-883.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_02-52-10-883.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/strreplace-alloca_true-valid-memsafety_true-termination.i_mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_02-52-10-883.csv Received shutdown request...