java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf -i ../../../trunk/examples/svcomp/memsafety/test-0234_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:58:39,187 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:58:39,188 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:58:39,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:58:39,203 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:58:39,204 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:58:39,205 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:58:39,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:58:39,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:58:39,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:58:39,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:58:39,211 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:58:39,211 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:58:39,213 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:58:39,214 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:58:39,216 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:58:39,219 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:58:39,220 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:58:39,222 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:58:39,223 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:58:39,225 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:58:39,230 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 02:58:39,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 02:58:39,231 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 02:58:39,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:58:39,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:58:39,249 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:58:39,249 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:58:39,249 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:58:39,250 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:58:39,250 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:58:39,250 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:58:39,250 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:58:39,251 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:58:39,251 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:58:39,251 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:58:39,251 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:58:39,252 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:58:39,252 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:58:39,252 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:58:39,252 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:58:39,252 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:58:39,253 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:58:39,253 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:58:39,253 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:58:39,253 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:58:39,253 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:58:39,254 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:58:39,254 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:58:39,254 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:58:39,254 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:58:39,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:58:39,255 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:58:39,255 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:58:39,255 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:58:39,255 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:58:39,255 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:58:39,256 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:58:39,256 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:58:39,256 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:58:39,256 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:58:39,256 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:58:39,257 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:58:39,257 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:58:39,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:58:39,305 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:58:39,309 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:58:39,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:58:39,310 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:58:39,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0234_true-valid-memsafety.i [2018-01-21 02:58:39,500 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:58:39,505 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:58:39,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:58:39,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:58:39,511 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:58:39,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,514 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 02:58:39, skipping insertion in model container [2018-01-21 02:58:39,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,529 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:58:39,575 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:58:39,711 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:58:39,740 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:58:39,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39 WrapperNode [2018-01-21 02:58:39,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:58:39,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:58:39,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:58:39,755 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:58:39,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... [2018-01-21 02:58:39,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:58:39,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:58:39,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:58:39,808 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:58:39,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:58:39,857 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:58:39,857 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:58:39,857 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-21 02:58:39,857 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-21 02:58:39,857 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-21 02:58:39,858 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:58:39,858 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-21 02:58:39,859 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 02:58:39,859 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-21 02:58:39,860 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-21 02:58:39,861 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-21 02:58:39,861 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-21 02:58:39,861 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-21 02:58:39,861 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:58:39,861 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:58:39,861 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:58:40,396 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:58:40,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:58:40 BoogieIcfgContainer [2018-01-21 02:58:40,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:58:40,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:58:40,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:58:40,401 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:58:40,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:58:39" (1/3) ... [2018-01-21 02:58:40,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf064d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:58:40, skipping insertion in model container [2018-01-21 02:58:40,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:58:39" (2/3) ... [2018-01-21 02:58:40,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf064d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:58:40, skipping insertion in model container [2018-01-21 02:58:40,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:58:40" (3/3) ... [2018-01-21 02:58:40,405 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0234_true-valid-memsafety.i [2018-01-21 02:58:40,415 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:58:40,423 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-01-21 02:58:40,471 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:58:40,471 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:58:40,472 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:58:40,472 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:58:40,472 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:58:40,472 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:58:40,472 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:58:40,472 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l3_destroyErr0EnsuresViolation======== [2018-01-21 02:58:40,473 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:58:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2018-01-21 02:58:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 02:58:40,502 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:58:40,502 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:58:40,503 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 02:58:40,506 INFO L82 PathProgramCache]: Analyzing trace with hash -888749887, now seen corresponding path program 1 times [2018-01-21 02:58:40,508 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:58:40,552 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:58:40,552 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:58:40,552 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:58:40,552 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:58:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:58:40,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:58:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:58:40,669 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:58:40,669 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:58:40,669 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:58:40,672 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:58:40,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:58:40,691 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:58:40,694 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 2 states. [2018-01-21 02:58:40,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:58:40,870 INFO L93 Difference]: Finished difference Result 340 states and 408 transitions. [2018-01-21 02:58:40,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:58:40,872 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 02:58:40,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:58:40,881 INFO L225 Difference]: With dead ends: 340 [2018-01-21 02:58:40,881 INFO L226 Difference]: Without dead ends: 153 [2018-01-21 02:58:40,887 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:58:40,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-01-21 02:58:40,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-01-21 02:58:40,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-01-21 02:58:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 168 transitions. [2018-01-21 02:58:40,962 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 168 transitions. Word has length 25 [2018-01-21 02:58:40,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:58:40,963 INFO L432 AbstractCegarLoop]: Abstraction has 153 states and 168 transitions. [2018-01-21 02:58:40,963 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:58:40,963 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 168 transitions. [2018-01-21 02:58:40,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-01-21 02:58:40,972 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:58:40,973 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 02:58:40,973 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 02:58:40,974 INFO L82 PathProgramCache]: Analyzing trace with hash 68022475, now seen corresponding path program 1 times [2018-01-21 02:58:40,974 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:58:40,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:58:40,975 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:58:40,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:58:40,975 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:58:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:58:41,039 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:58:41,221 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 02:58:41,221 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:58:41,221 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:58:41,223 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-01-21 02:58:41,226 INFO L201 CegarAbsIntRunner]: [0], [4], [5], [7], [8], [9], [10], [11], [15], [22], [23], [27], [28], [29], [30], [31], [32], [33], [34], [38], [44], [48], [51], [54], [60], [65], [69], [70], [88], [90], [94], [97], [100], [106], [107], [108], [109], [110], [112], [118], [119], [120], [122], [126], [129], [132], [138], [139], [140], [141], [142], [144], [146], [150], [153], [156], [162], [163], [164], [165], [166], [168], [170], [174], [177], [180], [186], [187], [188], [189], [190], [192], [193], [194], [196], [197], [199], [201], [203], [204], [205], [206], [207], [208], [209], [211], [213], [216], [218], [220], [221], [222], [223], [225], [229], [230], [252], [256], [257], [275], [276], [277], [278], [279], [281], [283], [284], [285], [286], [287], [288], [289], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [301], [302], [303], [304], [305], [306], [307], [309], [310], [311], [313] [2018-01-21 02:58:41,301 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 02:58:41,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 02:58:58,870 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 02:58:58,872 INFO L268 AbstractInterpreter]: Visited 5 different actions 5 times. Never merged. Never widened. Never found a fixpoint. Largest state had 16 variables. [2018-01-21 02:58:58,893 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 02:59:11,498 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 41.67% of their original sizes. [2018-01-21 02:59:11,499 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 02:59:11,637 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 02:59:11,638 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:59:11,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 02:59:11,638 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:59:11,641 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 02:59:11,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 02:59:11,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 02:59:11,642 INFO L87 Difference]: Start difference. First operand 153 states and 168 transitions. Second operand 6 states. [2018-01-21 02:59:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:59:20,715 INFO L93 Difference]: Finished difference Result 153 states and 168 transitions. [2018-01-21 02:59:20,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 02:59:20,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2018-01-21 02:59:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:59:20,716 INFO L225 Difference]: With dead ends: 153 [2018-01-21 02:59:20,716 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:59:20,718 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 213 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 02:59:20,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:59:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:59:20,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:59:20,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:59:20,719 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 214 [2018-01-21 02:59:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:59:20,720 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:59:20,720 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 02:59:20,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:59:20,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:59:20,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 02:59:20,977 WARN L143 SmtUtils]: Spent 121ms on a formula simplification that was a NOOP. DAG size: 25 [2018-01-21 02:59:20,991 INFO L401 ceAbstractionStarter]: For program point l3_destroyEXIT(lines 825 834) no Hoare annotation was computed. [2018-01-21 02:59:20,992 INFO L401 ceAbstractionStarter]: For program point L830(line 830) no Hoare annotation was computed. [2018-01-21 02:59:20,992 INFO L404 ceAbstractionStarter]: At program point L827''(lines 827 833) the Hoare annotation is: true [2018-01-21 02:59:20,992 INFO L401 ceAbstractionStarter]: For program point L828''(line 828) no Hoare annotation was computed. [2018-01-21 02:59:20,992 INFO L401 ceAbstractionStarter]: For program point L829(line 829) no Hoare annotation was computed. [2018-01-21 02:59:20,992 INFO L401 ceAbstractionStarter]: For program point L828(line 828) no Hoare annotation was computed. [2018-01-21 02:59:20,992 INFO L401 ceAbstractionStarter]: For program point L827(lines 827 833) no Hoare annotation was computed. [2018-01-21 02:59:20,993 INFO L404 ceAbstractionStarter]: At program point l3_destroyENTRY(lines 825 834) the Hoare annotation is: true [2018-01-21 02:59:20,993 INFO L401 ceAbstractionStarter]: For program point L827'''(lines 827 833) no Hoare annotation was computed. [2018-01-21 02:59:20,993 INFO L401 ceAbstractionStarter]: For program point L830'(line 830) no Hoare annotation was computed. [2018-01-21 02:59:20,993 INFO L401 ceAbstractionStarter]: For program point l3_destroyErr0EnsuresViolation(lines 825 834) no Hoare annotation was computed. [2018-01-21 02:59:20,993 INFO L404 ceAbstractionStarter]: At program point L828'(line 828) the Hoare annotation is: true [2018-01-21 02:59:20,993 INFO L401 ceAbstractionStarter]: For program point L829'(line 829) no Hoare annotation was computed. [2018-01-21 02:59:20,994 INFO L404 ceAbstractionStarter]: At program point L810(line 810) the Hoare annotation is: true [2018-01-21 02:59:20,994 INFO L404 ceAbstractionStarter]: At program point L809''(lines 809 811) the Hoare annotation is: true [2018-01-21 02:59:20,994 INFO L401 ceAbstractionStarter]: For program point l0_insertErr0EnsuresViolation(lines 806 814) no Hoare annotation was computed. [2018-01-21 02:59:20,994 INFO L401 ceAbstractionStarter]: For program point L813(line 813) no Hoare annotation was computed. [2018-01-21 02:59:20,994 INFO L401 ceAbstractionStarter]: For program point L812(line 812) no Hoare annotation was computed. [2018-01-21 02:59:20,994 INFO L401 ceAbstractionStarter]: For program point l0_insertEXIT(lines 806 814) no Hoare annotation was computed. [2018-01-21 02:59:20,994 INFO L401 ceAbstractionStarter]: For program point L812'(line 812) no Hoare annotation was computed. [2018-01-21 02:59:20,994 INFO L401 ceAbstractionStarter]: For program point L810'(line 810) no Hoare annotation was computed. [2018-01-21 02:59:20,995 INFO L401 ceAbstractionStarter]: For program point L809'''(lines 809 811) no Hoare annotation was computed. [2018-01-21 02:59:20,995 INFO L404 ceAbstractionStarter]: At program point l0_insertENTRY(lines 806 814) the Hoare annotation is: true [2018-01-21 02:59:20,995 INFO L401 ceAbstractionStarter]: For program point L809(lines 809 811) no Hoare annotation was computed. [2018-01-21 02:59:20,995 INFO L401 ceAbstractionStarter]: For program point l0_insertFINAL(lines 806 814) no Hoare annotation was computed. [2018-01-21 02:59:20,995 INFO L404 ceAbstractionStarter]: At program point L808(line 808) the Hoare annotation is: true [2018-01-21 02:59:20,995 INFO L401 ceAbstractionStarter]: For program point L808'(line 808) no Hoare annotation was computed. [2018-01-21 02:59:20,995 INFO L404 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-01-21 02:59:20,995 INFO L404 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-01-21 02:59:20,996 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-01-21 02:59:20,996 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-01-21 02:59:20,996 INFO L401 ceAbstractionStarter]: For program point L817'''(lines 817 823) no Hoare annotation was computed. [2018-01-21 02:59:20,996 INFO L401 ceAbstractionStarter]: For program point l4_destroyErr0EnsuresViolation(lines 815 824) no Hoare annotation was computed. [2018-01-21 02:59:20,996 INFO L401 ceAbstractionStarter]: For program point L820(line 820) no Hoare annotation was computed. [2018-01-21 02:59:20,996 INFO L401 ceAbstractionStarter]: For program point l4_destroyEXIT(lines 815 824) no Hoare annotation was computed. [2018-01-21 02:59:20,996 INFO L404 ceAbstractionStarter]: At program point l4_destroyENTRY(lines 815 824) the Hoare annotation is: true [2018-01-21 02:59:20,996 INFO L404 ceAbstractionStarter]: At program point L817''(lines 817 823) the Hoare annotation is: true [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L818''(line 818) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L818(line 818) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L817(lines 817 823) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L820'(line 820) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L819(line 819) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L819'(line 819) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L818'(line 818) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L401 ceAbstractionStarter]: For program point L791(lines 791 793) no Hoare annotation was computed. [2018-01-21 02:59:20,997 INFO L404 ceAbstractionStarter]: At program point L790(line 790) the Hoare annotation is: true [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point L795(line 795) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point L794(line 794) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L404 ceAbstractionStarter]: At program point L792(line 792) the Hoare annotation is: true [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point l2_insertErr0EnsuresViolation(lines 788 796) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point L794'(line 794) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point L791'''(lines 791 793) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point L792'(line 792) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L401 ceAbstractionStarter]: For program point L790'(line 790) no Hoare annotation was computed. [2018-01-21 02:59:20,998 INFO L404 ceAbstractionStarter]: At program point l2_insertENTRY(lines 788 796) the Hoare annotation is: true [2018-01-21 02:59:20,999 INFO L404 ceAbstractionStarter]: At program point L791''(lines 791 793) the Hoare annotation is: true [2018-01-21 02:59:20,999 INFO L401 ceAbstractionStarter]: For program point l2_insertEXIT(lines 788 796) no Hoare annotation was computed. [2018-01-21 02:59:20,999 INFO L401 ceAbstractionStarter]: For program point l2_insertFINAL(lines 788 796) no Hoare annotation was computed. [2018-01-21 02:59:20,999 INFO L401 ceAbstractionStarter]: For program point L868'''(lines 868 870) no Hoare annotation was computed. [2018-01-21 02:59:20,999 INFO L404 ceAbstractionStarter]: At program point L871(line 871) the Hoare annotation is: true [2018-01-21 02:59:20,999 INFO L401 ceAbstractionStarter]: For program point L871'(line 871) no Hoare annotation was computed. [2018-01-21 02:59:20,999 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 865 872) no Hoare annotation was computed. [2018-01-21 02:59:20,999 INFO L404 ceAbstractionStarter]: At program point L869(line 869) the Hoare annotation is: true [2018-01-21 02:59:21,000 INFO L401 ceAbstractionStarter]: For program point L868(lines 868 870) no Hoare annotation was computed. [2018-01-21 02:59:21,000 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 865 872) no Hoare annotation was computed. [2018-01-21 02:59:21,000 INFO L404 ceAbstractionStarter]: At program point L868''(lines 868 870) the Hoare annotation is: true [2018-01-21 02:59:21,000 INFO L401 ceAbstractionStarter]: For program point L869'(line 869) no Hoare annotation was computed. [2018-01-21 02:59:21,000 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 865 872) no Hoare annotation was computed. [2018-01-21 02:59:21,000 INFO L401 ceAbstractionStarter]: For program point L782'''(lines 782 784) no Hoare annotation was computed. [2018-01-21 02:59:21,000 INFO L404 ceAbstractionStarter]: At program point L783(line 783) the Hoare annotation is: true [2018-01-21 02:59:21,000 INFO L401 ceAbstractionStarter]: For program point L782(lines 782 784) no Hoare annotation was computed. [2018-01-21 02:59:21,001 INFO L404 ceAbstractionStarter]: At program point L781(line 781) the Hoare annotation is: true [2018-01-21 02:59:21,001 INFO L401 ceAbstractionStarter]: For program point L783'(line 783) no Hoare annotation was computed. [2018-01-21 02:59:21,001 INFO L401 ceAbstractionStarter]: For program point L786(line 786) no Hoare annotation was computed. [2018-01-21 02:59:21,001 INFO L401 ceAbstractionStarter]: For program point L781'(line 781) no Hoare annotation was computed. [2018-01-21 02:59:21,001 INFO L401 ceAbstractionStarter]: For program point L785(line 785) no Hoare annotation was computed. [2018-01-21 02:59:21,001 INFO L404 ceAbstractionStarter]: At program point l3_insertENTRY(lines 779 787) the Hoare annotation is: true [2018-01-21 02:59:21,001 INFO L404 ceAbstractionStarter]: At program point L782''(lines 782 784) the Hoare annotation is: true [2018-01-21 02:59:21,001 INFO L401 ceAbstractionStarter]: For program point L785'(line 785) no Hoare annotation was computed. [2018-01-21 02:59:21,002 INFO L401 ceAbstractionStarter]: For program point l3_insertEXIT(lines 779 787) no Hoare annotation was computed. [2018-01-21 02:59:21,002 INFO L401 ceAbstractionStarter]: For program point l3_insertFINAL(lines 779 787) no Hoare annotation was computed. [2018-01-21 02:59:21,002 INFO L401 ceAbstractionStarter]: For program point l3_insertErr0EnsuresViolation(lines 779 787) no Hoare annotation was computed. [2018-01-21 02:59:21,002 INFO L401 ceAbstractionStarter]: For program point l1_insertEXIT(lines 797 805) no Hoare annotation was computed. [2018-01-21 02:59:21,002 INFO L404 ceAbstractionStarter]: At program point L799(line 799) the Hoare annotation is: true [2018-01-21 02:59:21,002 INFO L401 ceAbstractionStarter]: For program point L803(line 803) no Hoare annotation was computed. [2018-01-21 02:59:21,002 INFO L404 ceAbstractionStarter]: At program point L801(line 801) the Hoare annotation is: true [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point L800(lines 800 802) no Hoare annotation was computed. [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point L803'(line 803) no Hoare annotation was computed. [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point L801'(line 801) no Hoare annotation was computed. [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point L804(line 804) no Hoare annotation was computed. [2018-01-21 02:59:21,003 INFO L404 ceAbstractionStarter]: At program point l1_insertENTRY(lines 797 805) the Hoare annotation is: true [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point L799'(line 799) no Hoare annotation was computed. [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point l1_insertFINAL(lines 797 805) no Hoare annotation was computed. [2018-01-21 02:59:21,003 INFO L404 ceAbstractionStarter]: At program point L800''(lines 800 802) the Hoare annotation is: true [2018-01-21 02:59:21,003 INFO L401 ceAbstractionStarter]: For program point L800'''(lines 800 802) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point l1_insertErr0EnsuresViolation(lines 797 805) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point l0_destroyEXIT(lines 855 864) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point L860(line 860) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point L860'(line 860) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point L858(line 858) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point l0_destroyErr0EnsuresViolation(lines 855 864) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L401 ceAbstractionStarter]: For program point L857(lines 857 863) no Hoare annotation was computed. [2018-01-21 02:59:21,004 INFO L404 ceAbstractionStarter]: At program point L857''(lines 857 863) the Hoare annotation is: true [2018-01-21 02:59:21,005 INFO L404 ceAbstractionStarter]: At program point L858'(line 858) the Hoare annotation is: true [2018-01-21 02:59:21,005 INFO L401 ceAbstractionStarter]: For program point L858''(line 858) no Hoare annotation was computed. [2018-01-21 02:59:21,005 INFO L401 ceAbstractionStarter]: For program point L859(line 859) no Hoare annotation was computed. [2018-01-21 02:59:21,005 INFO L401 ceAbstractionStarter]: For program point L857'''(lines 857 863) no Hoare annotation was computed. [2018-01-21 02:59:21,005 INFO L404 ceAbstractionStarter]: At program point l0_destroyENTRY(lines 855 864) the Hoare annotation is: true [2018-01-21 02:59:21,005 INFO L401 ceAbstractionStarter]: For program point L859'(line 859) no Hoare annotation was computed. [2018-01-21 02:59:21,005 INFO L401 ceAbstractionStarter]: For program point calloc_modelErr0EnsuresViolation(lines 740 743) no Hoare annotation was computed. [2018-01-21 02:59:21,005 INFO L401 ceAbstractionStarter]: For program point L742'(line 742) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L404 ceAbstractionStarter]: At program point calloc_modelENTRY(lines 740 743) the Hoare annotation is: true [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point L741'(line 741) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point calloc_modelFINAL(lines 740 743) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point calloc_modelEXIT(lines 740 743) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L404 ceAbstractionStarter]: At program point L742(line 742) the Hoare annotation is: true [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point L741(line 741) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point l4_insertEXIT(lines 772 778) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point l4_insertFINAL(lines 772 778) no Hoare annotation was computed. [2018-01-21 02:59:21,006 INFO L401 ceAbstractionStarter]: For program point L777(line 777) no Hoare annotation was computed. [2018-01-21 02:59:21,007 INFO L401 ceAbstractionStarter]: For program point L776(line 776) no Hoare annotation was computed. [2018-01-21 02:59:21,007 INFO L404 ceAbstractionStarter]: At program point L775(line 775) the Hoare annotation is: true [2018-01-21 02:59:21,007 INFO L404 ceAbstractionStarter]: At program point L774(line 774) the Hoare annotation is: true [2018-01-21 02:59:21,007 INFO L401 ceAbstractionStarter]: For program point l4_insertErr0EnsuresViolation(lines 772 778) no Hoare annotation was computed. [2018-01-21 02:59:21,007 INFO L401 ceAbstractionStarter]: For program point L776'(line 776) no Hoare annotation was computed. [2018-01-21 02:59:21,007 INFO L404 ceAbstractionStarter]: At program point l4_insertENTRY(lines 772 778) the Hoare annotation is: true [2018-01-21 02:59:21,007 INFO L401 ceAbstractionStarter]: For program point L775'(line 775) no Hoare annotation was computed. [2018-01-21 02:59:21,007 INFO L401 ceAbstractionStarter]: For program point L774'(line 774) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point L775''(line 775) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point L776''(line 776) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieFINAL(lines 765 771) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point L767'(line 767) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieErr0EnsuresViolation(lines 765 771) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L404 ceAbstractionStarter]: At program point zalloc_or_dieENTRY(lines 765 771) the Hoare annotation is: true [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point L768(lines 768 769) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieEXIT(lines 765 771) no Hoare annotation was computed. [2018-01-21 02:59:21,008 INFO L404 ceAbstractionStarter]: At program point L767(line 767) the Hoare annotation is: true [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 872) no Hoare annotation was computed. [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point L867'(line 867) no Hoare annotation was computed. [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 872) no Hoare annotation was computed. [2018-01-21 02:59:21,009 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 872) the Hoare annotation is: (and (= |old(#NULL.offset)| |#NULL.offset|) (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(~#list~23.base)| |~#list~23.base|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(~#list~23.offset)| |~#list~23.offset|)) [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point L867(line 867) no Hoare annotation was computed. [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 872) no Hoare annotation was computed. [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point L850(line 850) no Hoare annotation was computed. [2018-01-21 02:59:21,009 INFO L401 ceAbstractionStarter]: For program point L847'''(lines 847 853) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L401 ceAbstractionStarter]: For program point L850'(line 850) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L401 ceAbstractionStarter]: For program point L847(lines 847 853) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L401 ceAbstractionStarter]: For program point L848''(line 848) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L401 ceAbstractionStarter]: For program point L849(line 849) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L404 ceAbstractionStarter]: At program point L847''(lines 847 853) the Hoare annotation is: true [2018-01-21 02:59:21,010 INFO L401 ceAbstractionStarter]: For program point L848(line 848) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L404 ceAbstractionStarter]: At program point l1_destroyENTRY(lines 845 854) the Hoare annotation is: true [2018-01-21 02:59:21,010 INFO L401 ceAbstractionStarter]: For program point l1_destroyErr0EnsuresViolation(lines 845 854) no Hoare annotation was computed. [2018-01-21 02:59:21,010 INFO L404 ceAbstractionStarter]: At program point L848'(line 848) the Hoare annotation is: true [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point L849'(line 849) no Hoare annotation was computed. [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point l1_destroyEXIT(lines 845 854) no Hoare annotation was computed. [2018-01-21 02:59:21,011 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 872) the Hoare annotation is: true [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 872) no Hoare annotation was computed. [2018-01-21 02:59:21,011 INFO L397 ceAbstractionStarter]: At program point L1(lines 1 872) the Hoare annotation is: false [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 872) no Hoare annotation was computed. [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 872) no Hoare annotation was computed. [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point L837'''(lines 837 843) no Hoare annotation was computed. [2018-01-21 02:59:21,011 INFO L401 ceAbstractionStarter]: For program point l2_destroyErr0EnsuresViolation(lines 835 844) no Hoare annotation was computed. [2018-01-21 02:59:21,012 INFO L401 ceAbstractionStarter]: For program point L840(line 840) no Hoare annotation was computed. [2018-01-21 02:59:21,012 INFO L401 ceAbstractionStarter]: For program point L838''(line 838) no Hoare annotation was computed. [2018-01-21 02:59:21,012 INFO L404 ceAbstractionStarter]: At program point L837''(lines 837 843) the Hoare annotation is: true [2018-01-21 02:59:21,012 INFO L401 ceAbstractionStarter]: For program point L839(line 839) no Hoare annotation was computed. [2018-01-21 02:59:21,012 INFO L401 ceAbstractionStarter]: For program point L838(line 838) no Hoare annotation was computed. [2018-01-21 02:59:21,012 INFO L401 ceAbstractionStarter]: For program point L837(lines 837 843) no Hoare annotation was computed. [2018-01-21 02:59:21,012 INFO L404 ceAbstractionStarter]: At program point l2_destroyENTRY(lines 835 844) the Hoare annotation is: true [2018-01-21 02:59:21,012 INFO L401 ceAbstractionStarter]: For program point L840'(line 840) no Hoare annotation was computed. [2018-01-21 02:59:21,013 INFO L401 ceAbstractionStarter]: For program point l2_destroyEXIT(lines 835 844) no Hoare annotation was computed. [2018-01-21 02:59:21,013 INFO L401 ceAbstractionStarter]: For program point L839'(line 839) no Hoare annotation was computed. [2018-01-21 02:59:21,013 INFO L404 ceAbstractionStarter]: At program point L838'(line 838) the Hoare annotation is: true [2018-01-21 02:59:21,016 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:59:21,016 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:59:21,016 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:59:21,016 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:59:21,017 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:59:21,017 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:59:21,017 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:59:21,017 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l0_insertErr0EnsuresViolation======== [2018-01-21 02:59:21,017 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:59:21,020 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2018-01-21 02:59:21,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 02:59:21,022 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:59:21,022 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 02:59:21,022 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 02:59:21,022 INFO L82 PathProgramCache]: Analyzing trace with hash 312362155, now seen corresponding path program 1 times [2018-01-21 02:59:21,022 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:59:21,023 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:59:21,024 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:59:21,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:59:21,024 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:59:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:59:21,038 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:59:21,063 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 02:59:21,063 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:59:21,063 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:59:21,063 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 02:59:21,064 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 02:59:21,064 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:59:21,064 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 02:59:21,077 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:59:21,077 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 02:59:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:59:21,124 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 02:59:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:59:21,132 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 02:59:21,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:59:21,236 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:59:21,236 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-01-21 02:59:21,236 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:59:21,237 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:59:21,237 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:59:21,237 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:59:21,237 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 2 states. [2018-01-21 02:59:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:59:21,257 INFO L93 Difference]: Finished difference Result 340 states and 408 transitions. [2018-01-21 02:59:21,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:59:21,257 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-01-21 02:59:21,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:59:21,259 INFO L225 Difference]: With dead ends: 340 [2018-01-21 02:59:21,260 INFO L226 Difference]: Without dead ends: 93 [2018-01-21 02:59:21,261 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:59:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-21 02:59:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-01-21 02:59:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-21 02:59:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2018-01-21 02:59:21,273 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 35 [2018-01-21 02:59:21,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:59:21,275 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2018-01-21 02:59:21,275 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:59:21,275 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2018-01-21 02:59:21,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-21 02:59:21,278 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:59:21,279 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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 02:59:21,279 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 02:59:21,279 INFO L82 PathProgramCache]: Analyzing trace with hash -310804007, now seen corresponding path program 1 times [2018-01-21 02:59:21,279 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:59:21,280 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:59:21,280 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:59:21,281 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:59:21,281 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:59:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:59:21,301 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:59:21,349 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 02:59:21,349 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:59:21,350 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:59:21,350 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-01-21 02:59:21,350 INFO L201 CegarAbsIntRunner]: [48], [88], [90], [94], [97], [100], [106], [107], [108], [109], [111], [112], [118], [119], [120], [122], [126], [129], [132], [138], [139], [140], [141], [142], [144], [146], [150], [153], [156], [162], [163], [164], [165], [166], [168], [170], [174], [177], [180], [186], [187], [188], [189], [190], [192], [193], [194], [196], [197], [199], [201], [203], [204], [205], [206], [207], [208], [209], [211], [213], [216], [218], [220], [221], [222], [223], [277], [283], [284], [285], [286], [287], [288], [289], [290], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [301], [302], [303], [304], [305], [306], [309], [310], [311] [2018-01-21 02:59:21,354 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 02:59:21,354 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