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_precise.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 05:36:21,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:36:21,525 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:36:21,542 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:36:21,542 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:36:21,543 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:36:21,544 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:36:21,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:36:21,549 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:36:21,550 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:36:21,550 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:36:21,551 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:36:21,552 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:36:21,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:36:21,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:36:21,557 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:36:21,559 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:36:21,561 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:36:21,562 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:36:21,564 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:36:21,566 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:36:21,572 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_precise.epf [2018-01-21 05:36:21,582 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:36:21,582 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:36:21,583 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:36:21,583 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:36:21,584 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:36:21,584 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:36:21,584 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:36:21,584 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:36:21,585 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:36:21,585 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:36:21,585 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:36:21,586 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:36:21,586 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:36:21,586 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:36:21,586 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:36:21,586 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:36:21,587 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:36:21,587 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:36:21,587 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:36:21,587 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:36:21,587 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:36:21,588 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:36:21,588 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:36:21,588 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:36:21,588 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:36:21,588 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:36:21,589 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:36:21,589 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:36:21,589 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:36:21,589 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:36:21,589 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:36:21,590 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:36:21,590 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:36:21,590 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:36:21,590 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:36:21,590 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:36:21,590 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:36:21,591 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:36:21,591 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:36:21,627 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:36:21,640 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:36:21,645 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:36:21,647 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:36:21,647 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:36:21,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/strreplace-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:21,813 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:36:21,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:36:21,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:21,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:36:21,824 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:36:21,825 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0715de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:21, skipping insertion in model container [2018-01-21 05:36:21,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:36:21" (1/1) ... [2018-01-21 05:36:21,843 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:21,879 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:36:21,999 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:22,014 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:36:22,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22 WrapperNode [2018-01-21 05:36:22,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:36:22,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:36:22,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:36:22,022 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:36:22,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (1/1) ... [2018-01-21 05:36:22,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:36:22,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:36:22,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:36:22,054 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:36:22,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (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 05:36:22,108 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:36:22,108 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:36:22,108 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrreplace [2018-01-21 05:36:22,108 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:36:22,108 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:36:22,108 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:36:22,108 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:36:22,108 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:36:22,109 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:36:22,109 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:36:22,109 INFO L128 BoogieDeclarations]: Found specification of procedure cstrreplace [2018-01-21 05:36:22,109 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:36:22,109 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:36:22,109 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:36:22,287 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:36:22,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:22 BoogieIcfgContainer [2018-01-21 05:36:22,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:36:22,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:36:22,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:36:22,291 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:36:22,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:36:21" (1/3) ... [2018-01-21 05:36:22,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c242b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:22, skipping insertion in model container [2018-01-21 05:36:22,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:36:22" (2/3) ... [2018-01-21 05:36:22,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c242b75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:36:22, skipping insertion in model container [2018-01-21 05:36:22,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:36:22" (3/3) ... [2018-01-21 05:36:22,294 INFO L105 eAbstractionObserver]: Analyzing ICFG strreplace-alloca_true-valid-memsafety_true-termination.i [2018-01-21 05:36:22,301 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:36:22,309 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-01-21 05:36:22,359 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,359 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,359 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,359 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,359 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,360 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,360 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,360 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 05:36:22,360 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 05:36:22,380 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,381 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 05:36:22,381 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 05:36:22,385 INFO L82 PathProgramCache]: Analyzing trace with hash 79765, now seen corresponding path program 1 times [2018-01-21 05:36:22,387 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,428 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,428 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,428 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,483 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:22,490 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,497 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,498 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,498 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,498 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,499 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,499 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,499 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,499 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == cstrreplaceErr0EnsuresViolation======== [2018-01-21 05:36:22,499 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,501 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-21 05:36:22,502 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,502 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:36:22,502 INFO L371 AbstractCegarLoop]: === Iteration 1 === [cstrreplaceErr0EnsuresViolation]=== [2018-01-21 05:36:22,503 INFO L82 PathProgramCache]: Analyzing trace with hash -798156841, now seen corresponding path program 1 times [2018-01-21 05:36:22,503 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,504 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,504 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,505 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,505 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,556 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,602 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 05:36:22,603 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,603 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:22,603 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,605 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:22,616 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:22,616 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:22,619 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 05:36:22,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,719 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 05:36:22,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:22,721 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-21 05:36:22,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,729 INFO L225 Difference]: With dead ends: 47 [2018-01-21 05:36:22,730 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:22,733 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 05:36:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:22,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:22,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2018-01-21 05:36:22,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,761 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:22,761 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:22,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:22,763 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,763 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,763 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,763 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,764 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,764 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,764 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,764 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 05:36:22,764 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,765 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 05:36:22,766 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,766 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 05:36:22,766 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:22,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1986589424, now seen corresponding path program 1 times [2018-01-21 05:36:22,766 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,767 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,768 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,808 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 05:36:22,808 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,809 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:22,809 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,809 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:22,809 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:22,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:22,810 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 05:36:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,813 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 05:36:22,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:22,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2018-01-21 05:36:22,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,817 INFO L225 Difference]: With dead ends: 47 [2018-01-21 05:36:22,817 INFO L226 Difference]: Without dead ends: 31 [2018-01-21 05:36:22,817 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 05:36:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-01-21 05:36:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-01-21 05:36:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-21 05:36:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-01-21 05:36:22,827 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2018-01-21 05:36:22,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,827 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-01-21 05:36:22,827 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-01-21 05:36:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 05:36:22,828 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,828 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 05:36:22,828 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 05:36:22,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1726540896, now seen corresponding path program 1 times [2018-01-21 05:36:22,829 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,830 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,830 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,830 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 05:36:22,894 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 05:36:22,901 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,904 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,905 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,905 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 05:36:22,917 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:36:22,917 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:36:22,918 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:36:22,918 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:36:22,918 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:36:22,918 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:36:22,918 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:36:22,918 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 05:36:22,918 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:36:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-01-21 05:36:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 05:36:22,921 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,921 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 05:36:22,922 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:22,922 INFO L82 PathProgramCache]: Analyzing trace with hash 462401894, now seen corresponding path program 1 times [2018-01-21 05:36:22,922 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,923 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,923 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,923 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,923 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,939 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:22,957 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 05:36:22,958 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:22,958 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:36:22,958 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:22,958 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 05:36:22,959 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 05:36:22,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 05:36:22,959 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-01-21 05:36:22,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:22,963 INFO L93 Difference]: Finished difference Result 47 states and 50 transitions. [2018-01-21 05:36:22,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 05:36:22,964 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-01-21 05:36:22,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:22,965 INFO L225 Difference]: With dead ends: 47 [2018-01-21 05:36:22,965 INFO L226 Difference]: Without dead ends: 29 [2018-01-21 05:36:22,966 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 05:36:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-01-21 05:36:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-01-21 05:36:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-01-21 05:36:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-01-21 05:36:22,971 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2018-01-21 05:36:22,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:22,971 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-01-21 05:36:22,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 05:36:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-01-21 05:36:22,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-21 05:36:22,973 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:36:22,973 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 05:36:22,973 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 05:36:22,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1369392854, now seen corresponding path program 1 times [2018-01-21 05:36:22,974 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:36:22,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,975 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:36:22,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:36:22,975 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:36:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:36:22,997 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:36:23,102 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 05:36:23,102 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:36:23,102 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:36:23,102 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:36:23,103 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:36:23,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:36:23,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:36:23,104 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 4 states. [2018-01-21 05:36:23,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:36:23,185 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2018-01-21 05:36:23,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:36:23,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-01-21 05:36:23,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:36:23,186 INFO L225 Difference]: With dead ends: 29 [2018-01-21 05:36:23,186 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 05:36:23,187 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 05:36:23,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 05:36:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 05:36:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 05:36:23,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 05:36:23,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-01-21 05:36:23,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:36:23,188 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 05:36:23,188 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:36:23,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 05:36:23,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 05:36:23,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 05:36:23 BoogieIcfgContainer [2018-01-21 05:36:23,193 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 05:36:23,194 INFO L168 Benchmark]: Toolchain (without parser) took 1379.72 ms. Allocated memory was 306.2 MB in the beginning and 468.7 MB in the end (delta: 162.5 MB). Free memory was 264.1 MB in the beginning and 402.8 MB in the end (delta: -138.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,195 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 306.2 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:23,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.13 ms. Allocated memory is still 306.2 MB. Free memory was 263.1 MB in the beginning and 253.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,196 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 306.2 MB. Free memory was 253.1 MB in the beginning and 252.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,196 INFO L168 Benchmark]: RCFGBuilder took 234.10 ms. Allocated memory is still 306.2 MB. Free memory was 252.1 MB in the beginning and 235.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 5.3 GB. [2018-01-21 05:36:23,196 INFO L168 Benchmark]: TraceAbstraction took 904.02 ms. Allocated memory was 306.2 MB in the beginning and 468.7 MB in the end (delta: 162.5 MB). Free memory was 235.9 MB in the beginning and 402.8 MB in the end (delta: -166.8 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 05:36:23,198 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 306.2 MB. Free memory is still 272.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 202.13 ms. Allocated memory is still 306.2 MB. Free memory was 263.1 MB in the beginning and 253.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 306.2 MB. Free memory was 253.1 MB in the beginning and 252.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 234.10 ms. Allocated memory is still 306.2 MB. Free memory was 252.1 MB in the beginning and 235.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 904.02 ms. Allocated memory was 306.2 MB in the beginning and 468.7 MB in the end (delta: 162.5 MB). Free memory was 235.9 MB in the beginning and 402.8 MB in the end (delta: -166.8 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, 0.1s 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=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, 0.1s 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, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s 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_precise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_05-36-23-216.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_05-36-23-216.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_05-36-23-216.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_05-36-23-216.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_precise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-21_05-36-23-216.csv Received shutdown request...