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.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:02:27,281 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:02:27,283 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:02:27,297 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:02:27,298 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:02:27,299 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:02:27,300 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:02:27,302 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:02:27,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:02:27,304 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:02:27,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:02:27,306 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:02:27,306 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:02:27,308 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:02:27,309 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:02:27,311 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:02:27,313 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:02:27,315 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:02:27,317 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:02:27,318 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:02:27,320 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:02:27,326 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.epf [2018-01-21 00:02:27,334 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:02:27,335 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:02:27,336 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:02:27,336 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:02:27,336 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:02:27,336 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:02:27,336 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:02:27,336 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:02:27,337 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:02:27,338 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:02:27,338 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:02:27,338 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:02:27,338 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:02:27,338 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:02:27,338 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:02:27,338 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:02:27,339 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:02:27,339 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:02:27,339 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:02:27,339 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:02:27,339 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:02:27,339 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:02:27,340 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:02:27,341 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:02:27,341 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:02:27,377 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:02:27,388 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:02:27,391 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:02:27,392 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:02:27,392 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:02:27,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 00:02:27,570 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:02:27,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:02:27,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:02:27,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:02:27,580 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:02:27,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4454cf94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27, skipping insertion in model container [2018-01-21 00:02:27,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,597 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:02:27,637 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:02:27,758 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:02:27,782 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:02:27,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27 WrapperNode [2018-01-21 00:02:27,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:02:27,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:02:27,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:02:27,793 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:02:27,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (1/1) ... [2018-01-21 00:02:27,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:02:27,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:02:27,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:02:27,835 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:02:27,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (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 00:02:27,894 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:02:27,894 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:02:27,894 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:02:27,895 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:02:27,895 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:02:27,895 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:02:27,895 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:02:27,895 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:02:27,895 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:02:27,896 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:02:27,896 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:02:27,896 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:02:27,896 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:02:27,896 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 00:02:27,896 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:02:27,897 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:02:27,897 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:02:28,201 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:02:28,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:02:28 BoogieIcfgContainer [2018-01-21 00:02:28,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:02:28,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:02:28,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:02:28,205 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:02:28,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:02:27" (1/3) ... [2018-01-21 00:02:28,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd4f811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:02:28, skipping insertion in model container [2018-01-21 00:02:28,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:02:27" (2/3) ... [2018-01-21 00:02:28,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd4f811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:02:28, skipping insertion in model container [2018-01-21 00:02:28,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:02:28" (3/3) ... [2018-01-21 00:02:28,210 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-21 00:02:28,217 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:02:28,224 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:02:28,262 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:02:28,263 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:02:28,263 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:02:28,263 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:02:28,263 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:02:28,263 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:02:28,263 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:02:28,263 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:02:28,264 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:02:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 00:02:28,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:02:28,288 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:02:28,289 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:02:28,289 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:02:28,293 INFO L82 PathProgramCache]: Analyzing trace with hash 178519, now seen corresponding path program 1 times [2018-01-21 00:02:28,295 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:02:28,336 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:28,336 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:02:28,337 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:28,337 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:02:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:02:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:02:28,393 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:02:28,399 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:02:28,406 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:02:28,406 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:02:28,407 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:02:28,407 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:02:28,407 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:02:28,407 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:02:28,407 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:02:28,407 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:02:28,407 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:02:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 00:02:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 00:02:28,413 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:02:28,413 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:02:28,413 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:02:28,413 INFO L82 PathProgramCache]: Analyzing trace with hash 167119557, now seen corresponding path program 1 times [2018-01-21 00:02:28,413 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:02:28,414 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:28,415 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:02:28,415 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:28,415 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:02:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:02:28,446 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:02:28,573 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 00:02:28,575 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:02:28,575 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:02:28,575 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:02:28,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:02:28,590 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:02:28,591 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:02:28,594 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 00:02:28,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:02:28,618 INFO L93 Difference]: Finished difference Result 117 states and 144 transitions. [2018-01-21 00:02:28,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:02:28,619 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 29 [2018-01-21 00:02:28,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:02:28,628 INFO L225 Difference]: With dead ends: 117 [2018-01-21 00:02:28,629 INFO L226 Difference]: Without dead ends: 63 [2018-01-21 00:02:28,631 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 00:02:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-01-21 00:02:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-01-21 00:02:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-01-21 00:02:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-01-21 00:02:28,662 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 29 [2018-01-21 00:02:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:02:28,662 INFO L432 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-01-21 00:02:28,662 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:02:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-01-21 00:02:28,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 00:02:28,663 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:02:28,663 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:02:28,663 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:02:28,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1941446604, now seen corresponding path program 1 times [2018-01-21 00:02:28,664 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:02:28,665 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:28,665 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:02:28,665 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:28,665 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:02:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:02:28,693 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:02:28,857 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 00:02:28,857 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:02:28,858 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-21 00:02:28,858 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:02:28,859 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-21 00:02:28,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-21 00:02:28,860 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:02:28,860 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-01-21 00:02:29,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:02:29,248 INFO L93 Difference]: Finished difference Result 156 states and 175 transitions. [2018-01-21 00:02:29,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-21 00:02:29,249 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2018-01-21 00:02:29,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:02:29,254 INFO L225 Difference]: With dead ends: 156 [2018-01-21 00:02:29,254 INFO L226 Difference]: Without dead ends: 145 [2018-01-21 00:02:29,256 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-01-21 00:02:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-21 00:02:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 87. [2018-01-21 00:02:29,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-01-21 00:02:29,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2018-01-21 00:02:29,270 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 35 [2018-01-21 00:02:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:02:29,271 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2018-01-21 00:02:29,271 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-21 00:02:29,271 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2018-01-21 00:02:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-01-21 00:02:29,273 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:02:29,273 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:02:29,273 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:02:29,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1166710710, now seen corresponding path program 1 times [2018-01-21 00:02:29,273 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:02:29,274 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:29,274 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:02:29,274 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:29,274 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:02:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:02:29,298 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:02:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-21 00:02:29,364 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:02:29,364 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 00:02:29,364 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:02:29,364 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:02:29,365 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:02:29,365 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:02:29,365 INFO L87 Difference]: Start difference. First operand 87 states and 96 transitions. Second operand 5 states. [2018-01-21 00:02:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:02:29,493 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2018-01-21 00:02:29,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 00:02:29,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2018-01-21 00:02:29,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:02:29,502 INFO L225 Difference]: With dead ends: 112 [2018-01-21 00:02:29,502 INFO L226 Difference]: Without dead ends: 107 [2018-01-21 00:02:29,502 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:02:29,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-01-21 00:02:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2018-01-21 00:02:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-21 00:02:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2018-01-21 00:02:29,513 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 40 [2018-01-21 00:02:29,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:02:29,513 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2018-01-21 00:02:29,513 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:02:29,513 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2018-01-21 00:02:29,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 00:02:29,515 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:02:29,515 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:02:29,515 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:02:29,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1061404202, now seen corresponding path program 1 times [2018-01-21 00:02:29,516 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:02:29,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:29,517 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:02:29,517 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:02:29,517 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:02:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:02:29,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:02:29,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:02:29,828 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:02:29,828 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 00:02:29,830 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 45 with the following transitions: [2018-01-21 00:02:29,832 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [13], [25], [35], [39], [41], [44], [57], [58], [59], [60], [61], [62], [64], [68], [70], [73], [81], [82], [86], [90], [123], [127], [131], [133], [134], [135], [136], [140], [141], [143], [144], [149], [150], [151], [152], [153] [2018-01-21 00:02:29,884 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:02:29,885 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:02:59,670 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 00:02:59,671 INFO L268 AbstractInterpreter]: Visited 41 different actions 44 times. Merged at 2 different actions 2 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 36 variables. [2018-01-21 00:02:59,682 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown