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_preciseopt.epf -i ../../../trunk/examples/svcomp/memsafety/test-0236_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 08:25:41,061 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 08:25:41,062 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 08:25:41,076 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 08:25:41,076 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 08:25:41,077 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 08:25:41,077 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 08:25:41,079 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 08:25:41,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 08:25:41,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 08:25:41,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 08:25:41,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 08:25:41,082 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 08:25:41,084 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 08:25:41,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 08:25:41,087 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 08:25:41,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 08:25:41,091 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 08:25:41,093 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 08:25:41,094 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 08:25:41,096 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 08:25:41,101 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 08:25:41,102 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 08:25:41,102 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_preciseopt.epf [2018-01-21 08:25:41,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 08:25:41,119 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 08:25:41,120 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 08:25:41,120 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 08:25:41,120 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 08:25:41,120 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-21 08:25:41,120 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-21 08:25:41,121 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 08:25:41,121 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 08:25:41,122 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 08:25:41,122 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 08:25:41,122 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 08:25:41,122 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 08:25:41,122 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 08:25:41,123 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 08:25:41,123 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 08:25:41,123 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 08:25:41,123 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 08:25:41,123 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 08:25:41,123 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 08:25:41,124 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 08:25:41,124 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 08:25:41,124 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 08:25:41,124 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 08:25:41,124 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 08:25:41,125 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 08:25:41,125 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 08:25:41,125 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 08:25:41,125 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 08:25:41,126 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 08:25:41,126 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 08:25:41,126 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 08:25:41,126 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 08:25:41,126 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 08:25:41,127 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 08:25:41,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 08:25:41,127 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 08:25:41,127 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 08:25:41,128 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 08:25:41,128 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 08:25:41,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 08:25:41,176 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 08:25:41,180 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 08:25:41,182 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 08:25:41,182 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 08:25:41,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0236_true-valid-memsafety.i [2018-01-21 08:25:41,397 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 08:25:41,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 08:25:41,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 08:25:41,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 08:25:41,411 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 08:25:41,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,415 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 08:25:41, skipping insertion in model container [2018-01-21 08:25:41,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,435 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:25:41,480 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 08:25:41,594 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:25:41,616 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 08:25:41,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41 WrapperNode [2018-01-21 08:25:41,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 08:25:41,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 08:25:41,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 08:25:41,630 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 08:25:41,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (1/1) ... [2018-01-21 08:25:41,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 08:25:41,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 08:25:41,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 08:25:41,670 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 08:25:41,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (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 08:25:41,714 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 08:25:41,714 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 08:25:41,714 INFO L136 BoogieDeclarations]: Found implementation of procedure calloc_model [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_insert [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_insert [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_insert [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_insert [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_insert [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l4_destroy [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l3_destroy [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l2_destroy [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l1_destroy [2018-01-21 08:25:41,715 INFO L136 BoogieDeclarations]: Found implementation of procedure l0_destroy [2018-01-21 08:25:41,716 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-01-21 08:25:41,716 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 08:25:41,716 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure calloc_model [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure l4_insert [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure l3_insert [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure l2_insert [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure l1_insert [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure l0_insert [2018-01-21 08:25:41,717 INFO L128 BoogieDeclarations]: Found specification of procedure l4_destroy [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure l3_destroy [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure l2_destroy [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure l1_destroy [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure l0_destroy [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 08:25:41,718 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 08:25:42,226 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 08:25:42,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:25:42 BoogieIcfgContainer [2018-01-21 08:25:42,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 08:25:42,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 08:25:42,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 08:25:42,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 08:25:42,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 08:25:41" (1/3) ... [2018-01-21 08:25:42,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7e7278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:25:42, skipping insertion in model container [2018-01-21 08:25:42,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 08:25:41" (2/3) ... [2018-01-21 08:25:42,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7e7278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 08:25:42, skipping insertion in model container [2018-01-21 08:25:42,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 08:25:42" (3/3) ... [2018-01-21 08:25:42,234 INFO L105 eAbstractionObserver]: Analyzing ICFG test-0236_true-valid-memsafety.i [2018-01-21 08:25:42,240 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 08:25:42,246 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 15 error locations. [2018-01-21 08:25:42,284 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:25:42,284 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:25:42,285 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:25:42,285 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:25:42,285 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:25:42,285 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:25:42,285 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:25:42,285 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l3_destroyErr0EnsuresViolation======== [2018-01-21 08:25:42,286 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:25:42,304 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2018-01-21 08:25:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 08:25:42,311 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:25:42,311 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 08:25:42,312 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 08:25:42,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1954496071, now seen corresponding path program 1 times [2018-01-21 08:25:42,317 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:25:42,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:42,354 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:25:42,354 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:42,354 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:25:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:25:42,397 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:25:42,433 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 08:25:42,435 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:25:42,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 08:25:42,435 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:25:42,438 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:25:42,448 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:25:42,449 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:25:42,450 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2018-01-21 08:25:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:25:42,585 INFO L93 Difference]: Finished difference Result 356 states and 424 transitions. [2018-01-21 08:25:42,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:25:42,586 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 08:25:42,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:25:42,595 INFO L225 Difference]: With dead ends: 356 [2018-01-21 08:25:42,595 INFO L226 Difference]: Without dead ends: 161 [2018-01-21 08:25:42,599 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 08:25:42,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-21 08:25:42,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-01-21 08:25:42,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-21 08:25:42,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2018-01-21 08:25:42,639 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 25 [2018-01-21 08:25:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:25:42,639 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2018-01-21 08:25:42,639 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:25:42,639 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2018-01-21 08:25:42,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-01-21 08:25:42,646 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:25:42,646 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:25:42,646 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l3_destroyErr0EnsuresViolation]=== [2018-01-21 08:25:42,647 INFO L82 PathProgramCache]: Analyzing trace with hash -935573337, now seen corresponding path program 1 times [2018-01-21 08:25:42,647 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:25:42,647 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:42,648 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:25:42,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:25:42,648 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:25:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:25:42,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:25:42,864 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 08:25:42,864 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:25:42,864 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:25:42,865 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-01-21 08:25:42,867 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], [111], [113], [119], [120], [121], [123], [127], [130], [133], [139], [140], [141], [142], [143], [144], [146], [148], [152], [155], [158], [164], [165], [166], [167], [168], [169], [171], [173], [177], [180], [183], [189], [190], [191], [192], [193], [194], [196], [197], [198], [200], [201], [203], [205], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [219], [221], [224], [226], [228], [229], [230], [231], [233], [237], [238], [260], [264], [265], [283], [284], [285], [286], [287], [289], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [301], [302], [303], [304], [305], [306], [307], [308], [309], [310], [311], [312], [313], [314], [315], [317], [318], [319], [321] [2018-01-21 08:25:42,916 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:25:42,916 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 08:26:03,941 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-21 08:26:03,943 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 08:26:03,981 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-21 08:26:24,057 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 68.3% of their original sizes. [2018-01-21 08:26:24,057 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-21 08:26:24,173 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-21 08:26:24,195 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:26:24,196 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 08:26:24,196 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:26:24,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 08:26:24,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 08:26:24,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2018-01-21 08:26:24,199 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand 6 states. [2018-01-21 08:26:29,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:26:29,573 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2018-01-21 08:26:29,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-21 08:26:29,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 222 [2018-01-21 08:26:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:26:29,574 INFO L225 Difference]: With dead ends: 161 [2018-01-21 08:26:29,574 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 08:26:29,576 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2018-01-21 08:26:29,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 08:26:29,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 08:26:29,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 08:26:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 08:26:29,577 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 222 [2018-01-21 08:26:29,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:26:29,578 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 08:26:29,578 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 08:26:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 08:26:29,578 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 08:26:29,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-21 08:26:29,645 INFO L401 ceAbstractionStarter]: For program point L838'''(lines 838 844) no Hoare annotation was computed. [2018-01-21 08:26:29,645 INFO L401 ceAbstractionStarter]: For program point l3_destroyEXIT(lines 836 845) no Hoare annotation was computed. [2018-01-21 08:26:29,645 INFO L401 ceAbstractionStarter]: For program point L841(line 841) no Hoare annotation was computed. [2018-01-21 08:26:29,646 INFO L401 ceAbstractionStarter]: For program point L840(line 840) no Hoare annotation was computed. [2018-01-21 08:26:29,646 INFO L404 ceAbstractionStarter]: At program point L838''(lines 838 844) the Hoare annotation is: true [2018-01-21 08:26:29,646 INFO L401 ceAbstractionStarter]: For program point L839''(line 839) no Hoare annotation was computed. [2018-01-21 08:26:29,646 INFO L401 ceAbstractionStarter]: For program point L839(line 839) no Hoare annotation was computed. [2018-01-21 08:26:29,646 INFO L401 ceAbstractionStarter]: For program point L838(lines 838 844) no Hoare annotation was computed. [2018-01-21 08:26:29,646 INFO L404 ceAbstractionStarter]: At program point l3_destroyENTRY(lines 836 845) the Hoare annotation is: true [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point L840'(line 840) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point L841'(line 841) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point l3_destroyErr0EnsuresViolation(lines 836 845) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L404 ceAbstractionStarter]: At program point L839'(line 839) the Hoare annotation is: true [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point L819'''(lines 819 821) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L404 ceAbstractionStarter]: At program point L819''(lines 819 821) the Hoare annotation is: true [2018-01-21 08:26:29,647 INFO L404 ceAbstractionStarter]: At program point L820(line 820) the Hoare annotation is: true [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point l0_insertErr0EnsuresViolation(lines 816 825) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point L824(line 824) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point L823(line 823) no Hoare annotation was computed. [2018-01-21 08:26:29,647 INFO L401 ceAbstractionStarter]: For program point L822(line 822) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L404 ceAbstractionStarter]: At program point L818(line 818) the Hoare annotation is: true [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point l0_insertEXIT(lines 816 825) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point L823'(line 823) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point L820'(line 820) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L404 ceAbstractionStarter]: At program point l0_insertENTRY(lines 816 825) the Hoare annotation is: true [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point l0_insertFINAL(lines 816 825) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point L819(lines 819 821) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point L818'(line 818) no Hoare annotation was computed. [2018-01-21 08:26:29,648 INFO L404 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-01-21 08:26:29,648 INFO L404 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-01-21 08:26:29,648 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point l4_destroyErr0EnsuresViolation(lines 826 835) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L831(line 831) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L830(line 830) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point l4_destroyEXIT(lines 826 835) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L404 ceAbstractionStarter]: At program point l4_destroyENTRY(lines 826 835) the Hoare annotation is: true [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L829''(line 829) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L404 ceAbstractionStarter]: At program point L828''(lines 828 834) the Hoare annotation is: true [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L829(line 829) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L828(lines 828 834) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L831'(line 831) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L828'''(lines 828 834) no Hoare annotation was computed. [2018-01-21 08:26:29,649 INFO L401 ceAbstractionStarter]: For program point L830'(line 830) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L829'(line 829) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L799(lines 799 801) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point l2_insertErr0EnsuresViolation(lines 796 805) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L404 ceAbstractionStarter]: At program point L798(line 798) the Hoare annotation is: true [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L803(line 803) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L799'''(lines 799 801) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L802(line 802) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L404 ceAbstractionStarter]: At program point l2_insertENTRY(lines 796 805) the Hoare annotation is: true [2018-01-21 08:26:29,650 INFO L404 ceAbstractionStarter]: At program point L800(line 800) the Hoare annotation is: true [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L803'(line 803) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L800'(line 800) no Hoare annotation was computed. [2018-01-21 08:26:29,650 INFO L401 ceAbstractionStarter]: For program point L804(line 804) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point L798'(line 798) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point l2_insertEXIT(lines 796 805) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L404 ceAbstractionStarter]: At program point L799''(lines 799 801) the Hoare annotation is: true [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point l2_insertFINAL(lines 796 805) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L404 ceAbstractionStarter]: At program point L882(line 882) the Hoare annotation is: true [2018-01-21 08:26:29,651 INFO L404 ceAbstractionStarter]: At program point L880(line 880) the Hoare annotation is: true [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point L882'(line 882) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 876 883) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point L880'(line 880) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point L879(lines 879 881) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 876 883) no Hoare annotation was computed. [2018-01-21 08:26:29,651 INFO L404 ceAbstractionStarter]: At program point L879''(lines 879 881) the Hoare annotation is: true [2018-01-21 08:26:29,651 INFO L401 ceAbstractionStarter]: For program point L879'''(lines 879 881) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 876 883) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L404 ceAbstractionStarter]: At program point L790(line 790) the Hoare annotation is: true [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point L794(line 794) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point L793(line 793) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point L792(line 792) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L404 ceAbstractionStarter]: At program point L788(line 788) the Hoare annotation is: true [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point L793'(line 793) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point L790'(line 790) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L401 ceAbstractionStarter]: For program point L789(lines 789 791) no Hoare annotation was computed. [2018-01-21 08:26:29,652 INFO L404 ceAbstractionStarter]: At program point l3_insertENTRY(lines 786 795) the Hoare annotation is: true [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point L788'(line 788) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point l3_insertEXIT(lines 786 795) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point L789'''(lines 789 791) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point l3_insertFINAL(lines 786 795) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point l3_insertErr0EnsuresViolation(lines 786 795) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L404 ceAbstractionStarter]: At program point L789''(lines 789 791) the Hoare annotation is: true [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point l1_insertEXIT(lines 806 815) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L404 ceAbstractionStarter]: At program point L810(line 810) the Hoare annotation is: true [2018-01-21 08:26:29,653 INFO L404 ceAbstractionStarter]: At program point L809''(lines 809 811) the Hoare annotation is: true [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point L814(line 814) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point L813(line 813) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point L812(line 812) no Hoare annotation was computed. [2018-01-21 08:26:29,653 INFO L401 ceAbstractionStarter]: For program point L813'(line 813) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L404 ceAbstractionStarter]: At program point l1_insertENTRY(lines 806 815) the Hoare annotation is: true [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point l1_insertFINAL(lines 806 815) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L810'(line 810) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L809'''(lines 809 811) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L809(lines 809 811) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L404 ceAbstractionStarter]: At program point L808(line 808) the Hoare annotation is: true [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L808'(line 808) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point l1_insertErr0EnsuresViolation(lines 806 815) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L868'''(lines 868 874) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point l0_destroyEXIT(lines 866 875) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L871(line 871) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L870(line 870) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L871'(line 871) no Hoare annotation was computed. [2018-01-21 08:26:29,654 INFO L401 ceAbstractionStarter]: For program point L870'(line 870) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point L869(line 869) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point l0_destroyErr0EnsuresViolation(lines 866 875) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point L868(lines 868 874) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L404 ceAbstractionStarter]: At program point L868''(lines 868 874) the Hoare annotation is: true [2018-01-21 08:26:29,655 INFO L404 ceAbstractionStarter]: At program point L869'(line 869) the Hoare annotation is: true [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point L869''(line 869) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L404 ceAbstractionStarter]: At program point l0_destroyENTRY(lines 866 875) the Hoare annotation is: true [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point calloc_modelErr0EnsuresViolation(lines 740 743) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point L742'(line 742) no Hoare annotation was computed. [2018-01-21 08:26:29,655 INFO L404 ceAbstractionStarter]: At program point calloc_modelENTRY(lines 740 743) the Hoare annotation is: true [2018-01-21 08:26:29,655 INFO L401 ceAbstractionStarter]: For program point L741'(line 741) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point calloc_modelFINAL(lines 740 743) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point calloc_modelEXIT(lines 740 743) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L404 ceAbstractionStarter]: At program point L742(line 742) the Hoare annotation is: true [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point L741(line 741) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L404 ceAbstractionStarter]: At program point L780(line 780) the Hoare annotation is: true [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point L784(line 784) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point l4_insertEXIT(lines 777 785) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point L783(line 783) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point L782(line 782) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point l4_insertFINAL(lines 777 785) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point L781(line 781) no Hoare annotation was computed. [2018-01-21 08:26:29,656 INFO L401 ceAbstractionStarter]: For program point L783'(line 783) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L782'(line 782) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L781'(line 781) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L780'(line 780) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point l4_insertErr0EnsuresViolation(lines 777 785) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L404 ceAbstractionStarter]: At program point L779(line 779) the Hoare annotation is: true [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L779'(line 779) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L780''(line 780) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L781''(line 781) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L404 ceAbstractionStarter]: At program point l4_insertENTRY(lines 777 785) the Hoare annotation is: true [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieFINAL(lines 770 776) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L401 ceAbstractionStarter]: For program point L773(lines 773 774) no Hoare annotation was computed. [2018-01-21 08:26:29,657 INFO L404 ceAbstractionStarter]: At program point L772(line 772) the Hoare annotation is: true [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieErr0EnsuresViolation(lines 770 776) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point L772'(line 772) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L404 ceAbstractionStarter]: At program point zalloc_or_dieENTRY(lines 770 776) the Hoare annotation is: true [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point zalloc_or_dieEXIT(lines 770 776) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 883) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point L878'(line 878) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 883) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L397 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 883) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point L878(line 878) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 883) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point L861(line 861) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point L860(line 860) no Hoare annotation was computed. [2018-01-21 08:26:29,658 INFO L401 ceAbstractionStarter]: For program point L860'(line 860) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point L861'(line 861) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point L858(lines 858 864) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point L859''(line 859) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L404 ceAbstractionStarter]: At program point L858''(lines 858 864) the Hoare annotation is: true [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point L859(line 859) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point L858'''(lines 858 864) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L404 ceAbstractionStarter]: At program point l1_destroyENTRY(lines 856 865) the Hoare annotation is: true [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point l1_destroyErr0EnsuresViolation(lines 856 865) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L404 ceAbstractionStarter]: At program point L859'(line 859) the Hoare annotation is: true [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point l1_destroyEXIT(lines 856 865) no Hoare annotation was computed. [2018-01-21 08:26:29,659 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 883) the Hoare annotation is: true [2018-01-21 08:26:29,659 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 883) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L397 ceAbstractionStarter]: At program point L1(lines 1 883) the Hoare annotation is: false [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 883) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 883) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L850(line 850) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L848'''(lines 848 854) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L850'(line 850) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point l2_destroyErr0EnsuresViolation(lines 846 855) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L851(line 851) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L849''(line 849) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L404 ceAbstractionStarter]: At program point L848''(lines 848 854) the Hoare annotation is: true [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L849(line 849) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L401 ceAbstractionStarter]: For program point L848(lines 848 854) no Hoare annotation was computed. [2018-01-21 08:26:29,660 INFO L404 ceAbstractionStarter]: At program point l2_destroyENTRY(lines 846 855) the Hoare annotation is: true [2018-01-21 08:26:29,661 INFO L401 ceAbstractionStarter]: For program point L851'(line 851) no Hoare annotation was computed. [2018-01-21 08:26:29,661 INFO L401 ceAbstractionStarter]: For program point l2_destroyEXIT(lines 846 855) no Hoare annotation was computed. [2018-01-21 08:26:29,661 INFO L404 ceAbstractionStarter]: At program point L849'(line 849) the Hoare annotation is: true [2018-01-21 08:26:29,663 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 08:26:29,663 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 08:26:29,663 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 08:26:29,663 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 08:26:29,664 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 08:26:29,664 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 08:26:29,664 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 08:26:29,664 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == l0_insertErr0EnsuresViolation======== [2018-01-21 08:26:29,664 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 08:26:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2018-01-21 08:26:29,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-01-21 08:26:29,667 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:26:29,667 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 08:26:29,667 INFO L371 AbstractCegarLoop]: === Iteration 1 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 08:26:29,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1533472053, now seen corresponding path program 1 times [2018-01-21 08:26:29,667 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:26:29,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,668 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:26:29,668 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,668 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:26:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:26:29,684 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:26:29,707 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 08:26:29,708 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:26:29,708 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:26:29,708 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 08:26:29,708 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 08:26:29,709 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:26:29,709 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 08:26:29,720 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:26:29,720 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 08:26:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:26:29,770 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 08:26:29,775 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 08:26:29,776 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 08:26:29,795 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 08:26:29,817 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 08:26:29,817 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-01-21 08:26:29,817 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 08:26:29,817 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 08:26:29,818 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 08:26:29,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 08:26:29,818 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 2 states. [2018-01-21 08:26:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 08:26:29,836 INFO L93 Difference]: Finished difference Result 356 states and 424 transitions. [2018-01-21 08:26:29,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 08:26:29,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-01-21 08:26:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 08:26:29,838 INFO L225 Difference]: With dead ends: 356 [2018-01-21 08:26:29,839 INFO L226 Difference]: Without dead ends: 101 [2018-01-21 08:26:29,841 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 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 08:26:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-21 08:26:29,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-01-21 08:26:29,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-21 08:26:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2018-01-21 08:26:29,852 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 36 [2018-01-21 08:26:29,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 08:26:29,854 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2018-01-21 08:26:29,854 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 08:26:29,854 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2018-01-21 08:26:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-01-21 08:26:29,857 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 08:26:29,857 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] [2018-01-21 08:26:29,857 INFO L371 AbstractCegarLoop]: === Iteration 2 === [l0_insertErr0EnsuresViolation]=== [2018-01-21 08:26:29,858 INFO L82 PathProgramCache]: Analyzing trace with hash -14692643, now seen corresponding path program 1 times [2018-01-21 08:26:29,858 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 08:26:29,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,859 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 08:26:29,859 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 08:26:29,859 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 08:26:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 08:26:29,883 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 08:26:29,957 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2018-01-21 08:26:29,957 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 08:26:29,957 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 08:26:29,957 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 183 with the following transitions: [2018-01-21 08:26:29,958 INFO L201 CegarAbsIntRunner]: [48], [88], [90], [94], [97], [100], [106], [107], [108], [109], [110], [112], [113], [119], [120], [121], [123], [127], [130], [133], [139], [140], [141], [142], [143], [144], [146], [148], [152], [155], [158], [164], [165], [166], [167], [168], [169], [171], [173], [177], [180], [183], [189], [190], [191], [192], [193], [194], [196], [197], [198], [200], [201], [203], [205], [207], [208], [209], [210], [211], [212], [213], [214], [215], [216], [217], [219], [221], [224], [226], [228], [229], [230], [231], [285], [291], [292], [293], [294], [295], [296], [297], [298], [299], [300], [301], [302], [303], [304], [305], [306], [307], [308], [309], [310], [311], [312], [313], [314], [317], [318], [319] [2018-01-21 08:26:29,962 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 08:26:29,962 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