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-0235_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 02:52:30,885 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 02:52:30,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 02:52:30,905 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 02:52:30,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 02:52:30,907 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 02:52:30,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 02:52:30,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 02:52:30,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 02:52:30,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 02:52:30,916 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 02:52:30,916 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 02:52:30,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 02:52:30,918 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 02:52:30,918 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 02:52:30,921 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 02:52:30,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 02:52:30,927 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 02:52:30,928 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 02:52:30,930 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 02:52:30,932 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 02:52:30,939 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 02:52:30,939 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 02:52:30,940 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf [2018-01-21 02:52:30,951 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 02:52:30,952 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 02:52:30,952 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 02:52:30,953 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 02:52:30,953 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 02:52:30,953 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 02:52:30,953 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 02:52:30,954 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-21 02:52:30,954 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 02:52:30,955 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 02:52:30,955 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 02:52:30,955 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 02:52:30,955 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 02:52:30,955 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 02:52:30,956 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 02:52:30,956 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 02:52:30,956 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 02:52:30,956 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 02:52:30,956 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 02:52:30,957 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 02:52:30,957 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 02:52:30,957 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 02:52:30,957 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 02:52:30,958 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 02:52:30,958 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 02:52:30,958 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 02:52:30,958 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 02:52:30,958 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:52:30,959 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 02:52:30,959 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 02:52:30,959 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 02:52:30,959 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 02:52:30,959 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 02:52:30,960 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 02:52:30,960 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 02:52:30,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 02:52:30,960 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 02:52:30,960 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 02:52:30,961 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 02:52:30,962 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 02:52:31,026 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 02:52:31,046 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 02:52:31,053 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 02:52:31,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 02:52:31,055 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 02:52:31,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0235_false-valid-deref.i [2018-01-21 02:52:31,305 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 02:52:31,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 02:52:31,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 02:52:31,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 02:52:31,324 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 02:52:31,326 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@408feb46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31, skipping insertion in model container [2018-01-21 02:52:31,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,351 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:52:31,418 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 02:52:31,574 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:52:31,603 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 02:52:31,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31 WrapperNode [2018-01-21 02:52:31,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 02:52:31,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 02:52:31,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 02:52:31,620 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 02:52:31,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... [2018-01-21 02:52:31,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 02:52:31,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 02:52:31,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 02:52:31,691 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 02:52:31,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 02:52:31,754 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 02:52:31,754 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 02:52:31,754 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-21 02:52:31,754 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-21 02:52:31,755 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-21 02:52:31,755 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-21 02:52:31,755 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-21 02:52:31,755 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-21 02:52:31,755 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-21 02:52:31,755 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-21 02:52:31,756 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-21 02:52:31,756 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-21 02:52:31,756 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-21 02:52:31,756 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-21 02:52:31,756 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 02:52:31,757 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 02:52:31,757 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 02:52:31,757 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 02:52:31,757 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 02:52:31,757 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 02:52:31,757 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-21 02:52:31,757 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 02:52:31,758 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-21 02:52:31,759 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 02:52:31,760 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 02:52:31,760 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 02:52:32,754 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 02:52:32,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:52:32 BoogieIcfgContainer [2018-01-21 02:52:32,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 02:52:32,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 02:52:32,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 02:52:32,759 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 02:52:32,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 02:52:31" (1/3) ... [2018-01-21 02:52:32,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f71eb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:52:32, skipping insertion in model container [2018-01-21 02:52:32,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 02:52:31" (2/3) ... [2018-01-21 02:52:32,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f71eb73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 02:52:32, skipping insertion in model container [2018-01-21 02:52:32,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 02:52:32" (3/3) ... [2018-01-21 02:52:32,764 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0235_false-valid-deref.i [2018-01-21 02:52:32,771 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 02:52:32,779 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-01-21 02:52:32,826 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:52:32,827 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:52:32,827 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:52:32,827 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:52:32,827 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:52:32,827 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:52:32,827 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:52:32,828 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l3_destroyErr0EnsuresViolation======== [2018-01-21 02:52:32,829 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:52:32,866 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2018-01-21 02:52:32,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-21 02:52:32,879 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:32,881 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] [2018-01-21 02:52:32,881 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 02:52:32,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1869448641, now seen corresponding path program 1 times [2018-01-21 02:52:32,889 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:32,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:32,954 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:32,954 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:32,954 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:52:33,044 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:52:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 02:52:33,141 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:52:33,142 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 02:52:33,142 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:52:33,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:52:33,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:52:33,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:52:33,168 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 2 states. [2018-01-21 02:52:33,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:52:33,316 INFO L93 Difference]: Finished difference Result 400 states and 506 transitions. [2018-01-21 02:52:33,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:52:33,317 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 28 [2018-01-21 02:52:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:52:33,331 INFO L225 Difference]: With dead ends: 400 [2018-01-21 02:52:33,332 INFO L226 Difference]: Without dead ends: 183 [2018-01-21 02:52:33,339 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:52:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-01-21 02:52:33,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-01-21 02:52:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-21 02:52:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 214 transitions. [2018-01-21 02:52:33,397 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 214 transitions. Word has length 28 [2018-01-21 02:52:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:52:33,398 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 214 transitions. [2018-01-21 02:52:33,398 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:52:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 214 transitions. [2018-01-21 02:52:33,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-01-21 02:52:33,406 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:52:33,406 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] [2018-01-21 02:52:33,407 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 02:52:33,407 INFO L82 PathProgramCache]: Analyzing trace with hash 291437692, now seen corresponding path program 1 times [2018-01-21 02:52:33,407 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:52:33,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:33,409 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:52:33,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:52:33,409 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:52:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:52:33,484 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:52:33,678 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 02:52:33,678 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:52:33,679 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:52:33,681 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 204 with the following transitions: [2018-01-21 02:52:33,684 INFO L201 CegarAbsIntRunner]: [0], [4], [12], [14], [15], [21], [23], [27], [34], [72], [75], [78], [84], [109], [113], [116], [117], [144], [146], [150], [153], [156], [162], [163], [164], [165], [166], [168], [174], [175], [176], [178], [182], [185], [188], [194], [195], [196], [197], [198], [200], [202], [206], [209], [212], [218], [219], [220], [221], [222], [224], [226], [230], [233], [236], [242], [243], [244], [245], [246], [248], [249], [250], [252], [253], [255], [257], [259], [260], [261], [262], [263], [264], [265], [267], [269], [272], [274], [276], [277], [278], [279], [281], [285], [288], [289], [320], [324], [327], [328], [357], [358], [359], [373], [375], [376], [377], [378], [379], [380], [381], [382], [383], [384], [385], [386], [387], [388], [389], [390], [391], [392], [393], [394], [395], [396], [397], [398], [399], [401], [402], [403], [405] [2018-01-21 02:52:33,739 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 02:52:33,739 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 02:52:51,265 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 02:52:51,267 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 02:52:51,283 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 02:53:09,102 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 68.3% of their original sizes. [2018-01-21 02:53:09,102 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 02:53:09,217 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 02:53:09,218 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:53:09,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 02:53:09,218 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:53:09,221 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 02:53:09,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 02:53:09,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 02:53:09,222 INFO L87 Difference]: Start difference. First operand 183 states and 214 transitions. Second operand 6 states. [2018-01-21 02:53:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:53:15,113 INFO L93 Difference]: Finished difference Result 183 states and 214 transitions. [2018-01-21 02:53:15,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 02:53:15,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2018-01-21 02:53:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:53:15,114 INFO L225 Difference]: With dead ends: 183 [2018-01-21 02:53:15,114 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 02:53:15,116 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-21 02:53:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 02:53:15,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 02:53:15,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 02:53:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 02:53:15,117 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 203 [2018-01-21 02:53:15,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:53:15,118 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 02:53:15,118 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 02:53:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 02:53:15,118 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 02:53:15,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 02:53:15,319 INFO L401 ceAbstractionStarter]: For program point l3_destroyEXIT(lines 827 838) no Hoare annotation was computed. [2018-01-21 02:53:15,319 INFO L404 ceAbstractionStarter]: At program point L829''(lines 829 837) the Hoare annotation is: true [2018-01-21 02:53:15,319 INFO L401 ceAbstractionStarter]: For program point L829(lines 829 837) no Hoare annotation was computed. [2018-01-21 02:53:15,319 INFO L401 ceAbstractionStarter]: For program point L833'(lines 833 834) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L404 ceAbstractionStarter]: At program point l3_destroyENTRY(lines 827 838) the Hoare annotation is: true [2018-01-21 02:53:15,320 INFO L404 ceAbstractionStarter]: At program point L831'(line 831) the Hoare annotation is: true [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point l3_destroyErr0EnsuresViolation(lines 827 838) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L832(line 832) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L831(line 831) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L830(lines 830 831) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L834(line 834) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L833(lines 833 834) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L829'''(lines 829 837) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L830''(lines 830 831) no Hoare annotation was computed. [2018-01-21 02:53:15,320 INFO L401 ceAbstractionStarter]: For program point L831''(line 831) no Hoare annotation was computed. [2018-01-21 02:53:15,321 INFO L404 ceAbstractionStarter]: At program point L810(line 810) the Hoare annotation is: true [2018-01-21 02:53:15,321 INFO L404 ceAbstractionStarter]: At program point L809''(lines 809 811) the Hoare annotation is: true [2018-01-21 02:53:15,321 INFO L401 ceAbstractionStarter]: For program point l0_insertErr0EnsuresViolation(lines 806 814) no Hoare annotation was computed. [2018-01-21 02:53:15,321 INFO L401 ceAbstractionStarter]: For program point L813(line 813) no Hoare annotation was computed. [2018-01-21 02:53:15,321 INFO L401 ceAbstractionStarter]: For program point L812(line 812) no Hoare annotation was computed. [2018-01-21 02:53:15,321 INFO L401 ceAbstractionStarter]: For program point l0_insertEXIT(lines 806 814) no Hoare annotation was computed. [2018-01-21 02:53:15,321 INFO L401 ceAbstractionStarter]: For program point L812'(line 812) no Hoare annotation was computed. [2018-01-21 02:53:15,321 INFO L401 ceAbstractionStarter]: For program point L810'(line 810) no Hoare annotation was computed. [2018-01-21 02:53:15,322 INFO L401 ceAbstractionStarter]: For program point L809'''(lines 809 811) no Hoare annotation was computed. [2018-01-21 02:53:15,322 INFO L404 ceAbstractionStarter]: At program point l0_insertENTRY(lines 806 814) the Hoare annotation is: true [2018-01-21 02:53:15,322 INFO L401 ceAbstractionStarter]: For program point L809(lines 809 811) no Hoare annotation was computed. [2018-01-21 02:53:15,322 INFO L401 ceAbstractionStarter]: For program point l0_insertFINAL(lines 806 814) no Hoare annotation was computed. [2018-01-21 02:53:15,322 INFO L404 ceAbstractionStarter]: At program point L808(line 808) the Hoare annotation is: true [2018-01-21 02:53:15,322 INFO L401 ceAbstractionStarter]: For program point L808'(line 808) no Hoare annotation was computed. [2018-01-21 02:53:15,322 INFO L404 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-01-21 02:53:15,322 INFO L404 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point L817'''(lines 817 825) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point L821(lines 821 822) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point l4_destroyErr0EnsuresViolation(lines 815 826) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point L820(line 820) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point l4_destroyEXIT(lines 815 826) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L404 ceAbstractionStarter]: At program point l4_destroyENTRY(lines 815 826) the Hoare annotation is: true [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point L822(line 822) no Hoare annotation was computed. [2018-01-21 02:53:15,323 INFO L401 ceAbstractionStarter]: For program point L821'(lines 821 822) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L819'(line 819) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L819''(line 819) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L404 ceAbstractionStarter]: At program point L817''(lines 817 825) the Hoare annotation is: true [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L818''(lines 818 819) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L818(lines 818 819) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L817(lines 817 825) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L819(line 819) no Hoare annotation was computed. [2018-01-21 02:53:15,324 INFO L401 ceAbstractionStarter]: For program point L791(lines 791 793) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L404 ceAbstractionStarter]: At program point L790(line 790) the Hoare annotation is: true [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point L795(line 795) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point L794(line 794) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L404 ceAbstractionStarter]: At program point L792(line 792) the Hoare annotation is: true [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point l2_insertErr0EnsuresViolation(lines 788 796) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point L794'(line 794) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point L791'''(lines 791 793) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point L792'(line 792) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L401 ceAbstractionStarter]: For program point L790'(line 790) no Hoare annotation was computed. [2018-01-21 02:53:15,325 INFO L404 ceAbstractionStarter]: At program point l2_insertENTRY(lines 788 796) the Hoare annotation is: true [2018-01-21 02:53:15,325 INFO L404 ceAbstractionStarter]: At program point L791''(lines 791 793) the Hoare annotation is: true [2018-01-21 02:53:15,326 INFO L401 ceAbstractionStarter]: For program point l2_insertEXIT(lines 788 796) no Hoare annotation was computed. [2018-01-21 02:53:15,326 INFO L401 ceAbstractionStarter]: For program point l2_insertFINAL(lines 788 796) no Hoare annotation was computed. [2018-01-21 02:53:15,326 INFO L401 ceAbstractionStarter]: For program point L883(line 883) no Hoare annotation was computed. [2018-01-21 02:53:15,326 INFO L401 ceAbstractionStarter]: For program point L882(line 882) no Hoare annotation was computed. [2018-01-21 02:53:15,326 INFO L404 ceAbstractionStarter]: At program point L881(line 881) the Hoare annotation is: true [2018-01-21 02:53:15,326 INFO L404 ceAbstractionStarter]: At program point L882'(line 882) the Hoare annotation is: true [2018-01-21 02:53:15,326 INFO L401 ceAbstractionStarter]: For program point L887(line 887) no Hoare annotation was computed. [2018-01-21 02:53:15,326 INFO L401 ceAbstractionStarter]: For program point L886(line 886) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L885(line 885) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L884(line 884) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L888(line 888) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L879'(line 879) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L878'''(lines 878 880) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L887''(line 887) no Hoare annotation was computed. [2018-01-21 02:53:15,327 INFO L401 ceAbstractionStarter]: For program point L886''(line 886) no Hoare annotation was computed. [2018-01-21 02:53:15,328 INFO L404 ceAbstractionStarter]: At program point L887'(line 887) the Hoare annotation is: true [2018-01-21 02:53:15,328 INFO L401 ceAbstractionStarter]: For program point L885''(line 885) no Hoare annotation was computed. [2018-01-21 02:53:15,328 INFO L401 ceAbstractionStarter]: For program point L884''(line 884) no Hoare annotation was computed. [2018-01-21 02:53:15,328 INFO L404 ceAbstractionStarter]: At program point L885'(line 885) the Hoare annotation is: true [2018-01-21 02:53:15,328 INFO L401 ceAbstractionStarter]: For program point L883''(line 883) no Hoare annotation was computed. [2018-01-21 02:53:15,328 INFO L401 ceAbstractionStarter]: For program point L882''(line 882) no Hoare annotation was computed. [2018-01-21 02:53:15,328 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 875 889) no Hoare annotation was computed. [2018-01-21 02:53:15,328 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 875 889) no Hoare annotation was computed. [2018-01-21 02:53:15,329 INFO L404 ceAbstractionStarter]: At program point L883'(line 883) the Hoare annotation is: true [2018-01-21 02:53:15,329 INFO L401 ceAbstractionStarter]: For program point L881'(line 881) no Hoare annotation was computed. [2018-01-21 02:53:15,329 INFO L404 ceAbstractionStarter]: At program point L879(line 879) the Hoare annotation is: true [2018-01-21 02:53:15,329 INFO L401 ceAbstractionStarter]: For program point L878(lines 878 880) no Hoare annotation was computed. [2018-01-21 02:53:15,329 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 875 889) no Hoare annotation was computed. [2018-01-21 02:53:15,329 INFO L404 ceAbstractionStarter]: At program point L878''(lines 878 880) the Hoare annotation is: true [2018-01-21 02:53:15,329 INFO L401 ceAbstractionStarter]: For program point L888'(line 888) no Hoare annotation was computed. [2018-01-21 02:53:15,330 INFO L404 ceAbstractionStarter]: At program point L886'(line 886) the Hoare annotation is: true [2018-01-21 02:53:15,330 INFO L404 ceAbstractionStarter]: At program point L884'(line 884) the Hoare annotation is: true [2018-01-21 02:53:15,330 INFO L401 ceAbstractionStarter]: For program point L782'''(lines 782 784) no Hoare annotation was computed. [2018-01-21 02:53:15,330 INFO L404 ceAbstractionStarter]: At program point L783(line 783) the Hoare annotation is: true [2018-01-21 02:53:15,330 INFO L401 ceAbstractionStarter]: For program point L782(lines 782 784) no Hoare annotation was computed. [2018-01-21 02:53:15,330 INFO L404 ceAbstractionStarter]: At program point L781(line 781) the Hoare annotation is: true [2018-01-21 02:53:15,330 INFO L401 ceAbstractionStarter]: For program point L783'(line 783) no Hoare annotation was computed. [2018-01-21 02:53:15,330 INFO L401 ceAbstractionStarter]: For program point L786(line 786) no Hoare annotation was computed. [2018-01-21 02:53:15,330 INFO L401 ceAbstractionStarter]: For program point L781'(line 781) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L401 ceAbstractionStarter]: For program point L785(line 785) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L404 ceAbstractionStarter]: At program point l3_insertENTRY(lines 779 787) the Hoare annotation is: true [2018-01-21 02:53:15,331 INFO L404 ceAbstractionStarter]: At program point L782''(lines 782 784) the Hoare annotation is: true [2018-01-21 02:53:15,331 INFO L401 ceAbstractionStarter]: For program point L785'(line 785) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L401 ceAbstractionStarter]: For program point l3_insertEXIT(lines 779 787) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L401 ceAbstractionStarter]: For program point l3_insertFINAL(lines 779 787) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L401 ceAbstractionStarter]: For program point l3_insertErr0EnsuresViolation(lines 779 787) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L401 ceAbstractionStarter]: For program point l1_insertEXIT(lines 797 805) no Hoare annotation was computed. [2018-01-21 02:53:15,331 INFO L404 ceAbstractionStarter]: At program point L799(line 799) the Hoare annotation is: true [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point L803(line 803) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L404 ceAbstractionStarter]: At program point L801(line 801) the Hoare annotation is: true [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point L800(lines 800 802) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point L803'(line 803) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point L801'(line 801) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point L804(line 804) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L404 ceAbstractionStarter]: At program point l1_insertENTRY(lines 797 805) the Hoare annotation is: true [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point L799'(line 799) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L401 ceAbstractionStarter]: For program point l1_insertFINAL(lines 797 805) no Hoare annotation was computed. [2018-01-21 02:53:15,332 INFO L404 ceAbstractionStarter]: At program point L800''(lines 800 802) the Hoare annotation is: true [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point L800'''(lines 800 802) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point l1_insertErr0EnsuresViolation(lines 797 805) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point l0_destroyEXIT(lines 863 874) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point L865'''(lines 865 873) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point L865(lines 865 873) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point L869(lines 869 870) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point l0_destroyErr0EnsuresViolation(lines 863 874) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point L868(line 868) no Hoare annotation was computed. [2018-01-21 02:53:15,333 INFO L401 ceAbstractionStarter]: For program point L867(line 867) no Hoare annotation was computed. [2018-01-21 02:53:15,334 INFO L401 ceAbstractionStarter]: For program point L866(lines 866 867) no Hoare annotation was computed. [2018-01-21 02:53:15,334 INFO L401 ceAbstractionStarter]: For program point L869'(lines 869 870) no Hoare annotation was computed. [2018-01-21 02:53:15,334 INFO L401 ceAbstractionStarter]: For program point L866''(lines 866 867) no Hoare annotation was computed. [2018-01-21 02:53:15,334 INFO L404 ceAbstractionStarter]: At program point L867'(line 867) the Hoare annotation is: true [2018-01-21 02:53:15,334 INFO L401 ceAbstractionStarter]: For program point L867''(line 867) no Hoare annotation was computed. [2018-01-21 02:53:15,334 INFO L404 ceAbstractionStarter]: At program point L865''(lines 865 873) the Hoare annotation is: true [2018-01-21 02:53:15,334 INFO L404 ceAbstractionStarter]: At program point l0_destroyENTRY(lines 863 874) the Hoare annotation is: true [2018-01-21 02:53:15,334 INFO L401 ceAbstractionStarter]: For program point L870(line 870) no Hoare annotation was computed. [2018-01-21 02:53:15,335 INFO L401 ceAbstractionStarter]: For program point calloc_modelErr0EnsuresViolation(lines 740 743) no Hoare annotation was computed. [2018-01-21 02:53:15,335 INFO L401 ceAbstractionStarter]: For program point L742'(line 742) no Hoare annotation was computed. [2018-01-21 02:53:15,335 INFO L404 ceAbstractionStarter]: At program point calloc_modelENTRY(lines 740 743) the Hoare annotation is: true [2018-01-21 02:53:15,335 INFO L401 ceAbstractionStarter]: For program point L741'(line 741) no Hoare annotation was computed. [2018-01-21 02:53:15,335 INFO L401 ceAbstractionStarter]: For program point calloc_modelFINAL(lines 740 743) no Hoare annotation was computed. [2018-01-21 02:53:15,335 INFO L401 ceAbstractionStarter]: For program point calloc_modelEXIT(lines 740 743) no Hoare annotation was computed. [2018-01-21 02:53:15,335 INFO L404 ceAbstractionStarter]: At program point L742(line 742) the Hoare annotation is: true [2018-01-21 02:53:15,335 INFO L401 ceAbstractionStarter]: For program point L741(line 741) no Hoare annotation was computed. [2018-01-21 02:53:15,336 INFO L401 ceAbstractionStarter]: For program point l4_insertEXIT(lines 772 778) no Hoare annotation was computed. [2018-01-21 02:53:15,336 INFO L401 ceAbstractionStarter]: For program point l4_insertFINAL(lines 772 778) no Hoare annotation was computed. [2018-01-21 02:53:15,336 INFO L401 ceAbstractionStarter]: For program point L777(line 777) no Hoare annotation was computed. [2018-01-21 02:53:15,336 INFO L401 ceAbstractionStarter]: For program point L776(line 776) no Hoare annotation was computed. [2018-01-21 02:53:15,336 INFO L404 ceAbstractionStarter]: At program point L775(line 775) the Hoare annotation is: true [2018-01-21 02:53:15,336 INFO L404 ceAbstractionStarter]: At program point L774(line 774) the Hoare annotation is: true [2018-01-21 02:53:15,336 INFO L401 ceAbstractionStarter]: For program point l4_insertErr0EnsuresViolation(lines 772 778) no Hoare annotation was computed. [2018-01-21 02:53:15,336 INFO L401 ceAbstractionStarter]: For program point L776'(line 776) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L404 ceAbstractionStarter]: At program point l4_insertENTRY(lines 772 778) the Hoare annotation is: true [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point L775'(line 775) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point L774'(line 774) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point L775''(line 775) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point L776''(line 776) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieFINAL(lines 765 771) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point L767'(line 767) no Hoare annotation was computed. [2018-01-21 02:53:15,337 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieErr0EnsuresViolation(lines 765 771) no Hoare annotation was computed. [2018-01-21 02:53:15,338 INFO L404 ceAbstractionStarter]: At program point zalloc_or_dieENTRY(lines 765 771) the Hoare annotation is: true [2018-01-21 02:53:15,338 INFO L401 ceAbstractionStarter]: For program point L768(lines 768 769) no Hoare annotation was computed. [2018-01-21 02:53:15,338 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieEXIT(lines 765 771) no Hoare annotation was computed. [2018-01-21 02:53:15,338 INFO L404 ceAbstractionStarter]: At program point L767(line 767) the Hoare annotation is: true [2018-01-21 02:53:15,338 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 889) no Hoare annotation was computed. [2018-01-21 02:53:15,338 INFO L401 ceAbstractionStarter]: For program point L877'(line 877) no Hoare annotation was computed. [2018-01-21 02:53:15,338 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 889) no Hoare annotation was computed. [2018-01-21 02:53:15,338 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 889) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-21 02:53:15,339 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 889) no Hoare annotation was computed. [2018-01-21 02:53:15,339 INFO L401 ceAbstractionStarter]: For program point L877(line 877) no Hoare annotation was computed. [2018-01-21 02:53:15,339 INFO L401 ceAbstractionStarter]: For program point L857'(lines 857 858) no Hoare annotation was computed. [2018-01-21 02:53:15,339 INFO L404 ceAbstractionStarter]: At program point L855'(line 855) the Hoare annotation is: true [2018-01-21 02:53:15,339 INFO L401 ceAbstractionStarter]: For program point L853'''(lines 853 861) no Hoare annotation was computed. [2018-01-21 02:53:15,339 INFO L404 ceAbstractionStarter]: At program point l1_destroyENTRY(lines 851 862) the Hoare annotation is: true [2018-01-21 02:53:15,339 INFO L401 ceAbstractionStarter]: For program point L854(lines 854 855) no Hoare annotation was computed. [2018-01-21 02:53:15,339 INFO L401 ceAbstractionStarter]: For program point L853(lines 853 861) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point L858(line 858) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point L857(lines 857 858) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point L856(line 856) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point L855(line 855) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point L855''(line 855) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L404 ceAbstractionStarter]: At program point L853''(lines 853 861) the Hoare annotation is: true [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point L854''(lines 854 855) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point l1_destroyErr0EnsuresViolation(lines 851 862) no Hoare annotation was computed. [2018-01-21 02:53:15,340 INFO L401 ceAbstractionStarter]: For program point l1_destroyEXIT(lines 851 862) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 889) the Hoare annotation is: true [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 889) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L397 ceAbstractionStarter]: At program point L1(lines 1 889) the Hoare annotation is: false [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 889) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 889) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L843(line 843) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L842(lines 842 843) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L841(lines 841 849) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L846(line 846) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L845(lines 845 846) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L844(line 844) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L401 ceAbstractionStarter]: For program point L845'(lines 845 846) no Hoare annotation was computed. [2018-01-21 02:53:15,341 INFO L404 ceAbstractionStarter]: At program point l2_destroyENTRY(lines 839 850) the Hoare annotation is: true [2018-01-21 02:53:15,342 INFO L404 ceAbstractionStarter]: At program point L841''(lines 841 849) the Hoare annotation is: true [2018-01-21 02:53:15,342 INFO L404 ceAbstractionStarter]: At program point L843'(line 843) the Hoare annotation is: true [2018-01-21 02:53:15,342 INFO L401 ceAbstractionStarter]: For program point L843''(line 843) no Hoare annotation was computed. [2018-01-21 02:53:15,342 INFO L401 ceAbstractionStarter]: For program point L842''(lines 842 843) no Hoare annotation was computed. [2018-01-21 02:53:15,342 INFO L401 ceAbstractionStarter]: For program point L841'''(lines 841 849) no Hoare annotation was computed. [2018-01-21 02:53:15,342 INFO L401 ceAbstractionStarter]: For program point l2_destroyErr0EnsuresViolation(lines 839 850) no Hoare annotation was computed. [2018-01-21 02:53:15,342 INFO L401 ceAbstractionStarter]: For program point l2_destroyEXIT(lines 839 850) no Hoare annotation was computed. [2018-01-21 02:53:15,346 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 02:53:15,346 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 02:53:15,346 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 02:53:15,346 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 02:53:15,346 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 02:53:15,346 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 02:53:15,346 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 02:53:15,346 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l0_insertErr0EnsuresViolation======== [2018-01-21 02:53:15,347 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 02:53:15,350 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2018-01-21 02:53:15,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-21 02:53:15,352 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:53:15,352 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 02:53:15,352 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 02:53:15,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1305660921, now seen corresponding path program 1 times [2018-01-21 02:53:15,353 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:53:15,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:53:15,354 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:53:15,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:53:15,354 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:53:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:53:15,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:53:15,396 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 02:53:15,396 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:53:15,396 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:53:15,397 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 02:53:15,397 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 02:53:15,397 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:53:15,398 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 02:53:15,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:53:15,411 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 02:53:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:53:15,467 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 02:53:15,474 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 02:53:15,474 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 02:53:15,545 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 02:53:15,568 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 02:53:15,569 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-01-21 02:53:15,569 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 02:53:15,569 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 02:53:15,569 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 02:53:15,569 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 02:53:15,570 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 2 states. [2018-01-21 02:53:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 02:53:15,591 INFO L93 Difference]: Finished difference Result 400 states and 506 transitions. [2018-01-21 02:53:15,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 02:53:15,591 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2018-01-21 02:53:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 02:53:15,593 INFO L225 Difference]: With dead ends: 400 [2018-01-21 02:53:15,594 INFO L226 Difference]: Without dead ends: 93 [2018-01-21 02:53:15,595 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 02:53:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-21 02:53:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-01-21 02:53:15,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-21 02:53:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 103 transitions. [2018-01-21 02:53:15,606 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 103 transitions. Word has length 35 [2018-01-21 02:53:15,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 02:53:15,608 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 103 transitions. [2018-01-21 02:53:15,608 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 02:53:15,608 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 103 transitions. [2018-01-21 02:53:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-01-21 02:53:15,611 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 02:53:15,611 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 02:53:15,611 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 02:53:15,612 INFO L82 PathProgramCache]: Analyzing trace with hash -471393731, now seen corresponding path program 1 times [2018-01-21 02:53:15,612 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 02:53:15,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:53:15,613 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 02:53:15,613 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 02:53:15,613 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 02:53:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 02:53:15,637 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 02:53:15,696 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 02:53:15,696 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 02:53:15,696 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 02:53:15,697 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-01-21 02:53:15,697 INFO L201 CegarAbsIntRunner]: [72], [144], [146], [150], [153], [156], [162], [163], [164], [165], [167], [168], [174], [175], [176], [178], [182], [185], [188], [194], [195], [196], [197], [198], [200], [202], [206], [209], [212], [218], [219], [220], [221], [222], [224], [226], [230], [233], [236], [242], [243], [244], [245], [246], [248], [249], [250], [252], [253], [255], [257], [259], [260], [261], [262], [263], [264], [265], [267], [269], [272], [274], [276], [277], [278], [279], [357], [375], [376], [377], [378], [379], [380], [381], [382], [383], [384], [385], [386], [387], [388], [389], [390], [391], [392], [393], [394], [395], [396], [397], [398], [401], [402], [403] [2018-01-21 02:53:15,700 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 02:53:15,701 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