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/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 05:51:54,146 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 05:51:54,148 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 05:51:54,162 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 05:51:54,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 05:51:54,163 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 05:51:54,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 05:51:54,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 05:51:54,168 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 05:51:54,169 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 05:51:54,169 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 05:51:54,169 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 05:51:54,170 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 05:51:54,171 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 05:51:54,171 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 05:51:54,174 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 05:51:54,176 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 05:51:54,178 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 05:51:54,179 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 05:51:54,180 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 05:51:54,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 05:51:54,187 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 05:51:54,188 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 05:51:54,188 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 05:51:54,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 05:51:54,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 05:51:54,199 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 05:51:54,199 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 05:51:54,199 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 05:51:54,199 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 05:51:54,200 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 05:51:54,200 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 05:51:54,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 05:51:54,201 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 05:51:54,201 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 05:51:54,201 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 05:51:54,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 05:51:54,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 05:51:54,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 05:51:54,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 05:51:54,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 05:51:54,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 05:51:54,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 05:51:54,202 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 05:51:54,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 05:51:54,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 05:51:54,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 05:51:54,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 05:51:54,203 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 05:51:54,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 05:51:54,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 05:51:54,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 05:51:54,204 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 05:51:54,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 05:51:54,205 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 05:51:54,205 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 05:51:54,205 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 05:51:54,205 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 05:51:54,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 05:51:54,205 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 05:51:54,206 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 05:51:54,207 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 05:51:54,207 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 05:51:54,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 05:51:54,253 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 05:51:54,257 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 05:51:54,259 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 05:51:54,259 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 05:51:54,260 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/complex_data_creation_test01_true-valid-memsafety.i [2018-01-21 05:51:54,456 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 05:51:54,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 05:51:54,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 05:51:54,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 05:51:54,465 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 05:51:54,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44478139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54, skipping insertion in model container [2018-01-21 05:51:54,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,482 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:51:54,520 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 05:51:54,644 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:51:54,671 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 05:51:54,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54 WrapperNode [2018-01-21 05:51:54,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 05:51:54,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 05:51:54,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 05:51:54,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 05:51:54,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (1/1) ... [2018-01-21 05:51:54,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 05:51:54,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 05:51:54,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 05:51:54,729 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 05:51:54,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (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 05:51:54,782 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 05:51:54,782 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 05:51:54,782 INFO L136 BoogieDeclarations]: Found implementation of procedure create_data [2018-01-21 05:51:54,783 INFO L136 BoogieDeclarations]: Found implementation of procedure freeData [2018-01-21 05:51:54,783 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-21 05:51:54,783 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 05:51:54,783 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 05:51:54,783 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 05:51:54,783 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 05:51:54,783 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 05:51:54,784 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 05:51:54,784 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 05:51:54,784 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 05:51:54,784 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 05:51:54,784 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 05:51:54,784 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 05:51:54,785 INFO L128 BoogieDeclarations]: Found specification of procedure create_data [2018-01-21 05:51:54,785 INFO L128 BoogieDeclarations]: Found specification of procedure freeData [2018-01-21 05:51:54,785 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-21 05:51:54,785 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 05:51:54,785 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 05:51:54,785 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 05:51:55,239 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 05:51:55,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:51:55 BoogieIcfgContainer [2018-01-21 05:51:55,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 05:51:55,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 05:51:55,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 05:51:55,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 05:51:55,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 05:51:54" (1/3) ... [2018-01-21 05:51:55,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252582cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:51:55, skipping insertion in model container [2018-01-21 05:51:55,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 05:51:54" (2/3) ... [2018-01-21 05:51:55,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252582cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 05:51:55, skipping insertion in model container [2018-01-21 05:51:55,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 05:51:55" (3/3) ... [2018-01-21 05:51:55,249 INFO L105 eAbstractionObserver]: Analyzing ICFG complex_data_creation_test01_true-valid-memsafety.i [2018-01-21 05:51:55,258 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 05:51:55,268 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-21 05:51:55,326 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 05:51:55,326 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 05:51:55,326 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 05:51:55,326 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 05:51:55,327 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 05:51:55,327 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 05:51:55,327 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 05:51:55,327 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == create_dataErr0EnsuresViolation======== [2018-01-21 05:51:55,328 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 05:51:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2018-01-21 05:51:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 05:51:55,363 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:51:55,365 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 05:51:55,365 INFO L371 AbstractCegarLoop]: === Iteration 1 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:51:55,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1561242995, now seen corresponding path program 1 times [2018-01-21 05:51:55,374 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:51:55,437 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:55,437 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:51:55,438 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:55,438 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:51:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:51:55,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:51:55,610 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 05:51:55,612 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:51:55,613 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:51:55,613 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:51:55,618 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:51:55,714 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:51:55,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:51:55,718 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 3 states. [2018-01-21 05:51:55,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:51:55,765 INFO L93 Difference]: Finished difference Result 248 states and 284 transitions. [2018-01-21 05:51:55,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:51:55,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-21 05:51:55,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:51:55,777 INFO L225 Difference]: With dead ends: 248 [2018-01-21 05:51:55,778 INFO L226 Difference]: Without dead ends: 96 [2018-01-21 05:51:55,782 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:51:55,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-01-21 05:51:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-01-21 05:51:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 05:51:55,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2018-01-21 05:51:55,822 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 25 [2018-01-21 05:51:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:51:55,822 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2018-01-21 05:51:55,822 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:51:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2018-01-21 05:51:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 05:51:55,825 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:51:55,825 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] [2018-01-21 05:51:55,825 INFO L371 AbstractCegarLoop]: === Iteration 2 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:51:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1948874992, now seen corresponding path program 1 times [2018-01-21 05:51:55,826 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:51:55,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:55,827 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:51:55,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:55,828 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:51:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:51:55,850 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:51:55,919 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 05:51:55,919 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:51:55,920 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-21 05:51:55,920 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:51:55,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 05:51:55,922 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 05:51:55,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-21 05:51:55,922 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 4 states. [2018-01-21 05:51:55,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:51:55,978 INFO L93 Difference]: Finished difference Result 234 states and 263 transitions. [2018-01-21 05:51:55,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 05:51:55,979 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 05:51:55,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:51:55,981 INFO L225 Difference]: With dead ends: 234 [2018-01-21 05:51:55,981 INFO L226 Difference]: Without dead ends: 146 [2018-01-21 05:51:55,982 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 05:51:55,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-21 05:51:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2018-01-21 05:51:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-21 05:51:55,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2018-01-21 05:51:55,992 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 27 [2018-01-21 05:51:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:51:55,992 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2018-01-21 05:51:55,992 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 05:51:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2018-01-21 05:51:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 05:51:55,993 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:51:55,993 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 05:51:55,993 INFO L371 AbstractCegarLoop]: === Iteration 3 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:51:55,993 INFO L82 PathProgramCache]: Analyzing trace with hash -245124692, now seen corresponding path program 1 times [2018-01-21 05:51:55,993 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:51:55,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:55,994 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:51:55,994 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:55,994 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:51:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:51:56,017 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:51:56,051 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 05:51:56,052 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:51:56,052 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 05:51:56,052 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:51:56,053 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:51:56,053 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:51:56,053 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:51:56,053 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand 3 states. [2018-01-21 05:51:56,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:51:56,128 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2018-01-21 05:51:56,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:51:56,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-21 05:51:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:51:56,131 INFO L225 Difference]: With dead ends: 147 [2018-01-21 05:51:56,131 INFO L226 Difference]: Without dead ends: 146 [2018-01-21 05:51:56,132 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:51:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-21 05:51:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-21 05:51:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-21 05:51:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2018-01-21 05:51:56,144 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 29 [2018-01-21 05:51:56,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:51:56,145 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2018-01-21 05:51:56,145 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:51:56,145 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2018-01-21 05:51:56,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-21 05:51:56,146 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:51:56,146 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 05:51:56,146 INFO L371 AbstractCegarLoop]: === Iteration 4 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:51:56,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1224197024, now seen corresponding path program 1 times [2018-01-21 05:51:56,146 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:51:56,147 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:56,147 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:51:56,147 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:56,148 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:51:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:51:56,173 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:51:56,218 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 05:51:56,219 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 05:51:56,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 05:51:56,219 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 05:51:56,219 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 05:51:56,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 05:51:56,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:51:56,221 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand 3 states. [2018-01-21 05:51:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 05:51:56,245 INFO L93 Difference]: Finished difference Result 298 states and 335 transitions. [2018-01-21 05:51:56,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 05:51:56,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2018-01-21 05:51:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 05:51:56,247 INFO L225 Difference]: With dead ends: 298 [2018-01-21 05:51:56,248 INFO L226 Difference]: Without dead ends: 160 [2018-01-21 05:51:56,249 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 05:51:56,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2018-01-21 05:51:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2018-01-21 05:51:56,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-21 05:51:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 166 transitions. [2018-01-21 05:51:56,262 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 166 transitions. Word has length 43 [2018-01-21 05:51:56,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 05:51:56,262 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 166 transitions. [2018-01-21 05:51:56,262 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 05:51:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 166 transitions. [2018-01-21 05:51:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-01-21 05:51:56,265 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 05:51:56,265 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, 1, 1, 1, 1, 1, 1] [2018-01-21 05:51:56,265 INFO L371 AbstractCegarLoop]: === Iteration 5 === [create_dataErr0EnsuresViolation]=== [2018-01-21 05:51:56,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1546322841, now seen corresponding path program 1 times [2018-01-21 05:51:56,265 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 05:51:56,266 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:56,266 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 05:51:56,267 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 05:51:56,267 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 05:51:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 05:51:56,291 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 05:51:56,340 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 05:51:56,341 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 05:51:56,341 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 05:51:56,343 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 51 with the following transitions: [2018-01-21 05:51:56,345 INFO L201 CegarAbsIntRunner]: [0], [7], [14], [15], [16], [17], [18], [19], [23], [26], [28], [29], [30], [31], [32], [34], [38], [39], [43], [45], [52], [54], [61], [65], [75], [91], [92], [93], [95], [97], [98], [99], [100], [104], [172], [173], [179], [180], [181], [182], [183], [184], [185], [188], [203], [207], [208], [209], [211] [2018-01-21 05:51:56,388 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 05:51:56,389 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown