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/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 03:18:13,269 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 03:18:13,271 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 03:18:13,288 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 03:18:13,288 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 03:18:13,289 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 03:18:13,290 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 03:18:13,292 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 03:18:13,295 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 03:18:13,296 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 03:18:13,301 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 03:18:13,302 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 03:18:13,303 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 03:18:13,305 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 03:18:13,306 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 03:18:13,323 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 03:18:13,329 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 03:18:13,332 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 03:18:13,333 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 03:18:13,334 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 03:18:13,337 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 03:18:13,338 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 03:18:13,338 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 03:18:13,340 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 03:18:13,341 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 03:18:13,351 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 03:18:13,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 03:18:13,355 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 03:18:13,356 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 03:18:13,356 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 03:18:13,357 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 03:18:13,357 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_preciseopt.epf [2018-01-25 03:18:13,383 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 03:18:13,383 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 03:18:13,391 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 03:18:13,392 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 03:18:13,392 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 03:18:13,392 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 03:18:13,392 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 03:18:13,392 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 03:18:13,393 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 03:18:13,393 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 03:18:13,394 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 03:18:13,394 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 03:18:13,394 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 03:18:13,394 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 03:18:13,394 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 03:18:13,394 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 03:18:13,395 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 03:18:13,395 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 03:18:13,395 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 03:18:13,400 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 03:18:13,400 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 03:18:13,401 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 03:18:13,401 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 03:18:13,401 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 03:18:13,401 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 03:18:13,401 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 03:18:13,402 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 03:18:13,402 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 03:18:13,402 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 03:18:13,402 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 03:18:13,402 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 03:18:13,402 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 03:18:13,403 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 03:18:13,403 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 03:18:13,403 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 03:18:13,404 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 03:18:13,405 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 03:18:13,496 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 03:18:13,521 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 03:18:13,536 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 03:18:13,537 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 03:18:13,538 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 03:18:13,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_1_true-valid-memsafety.i [2018-01-25 03:18:13,873 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 03:18:13,882 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 03:18:13,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 03:18:13,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 03:18:13,893 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 03:18:13,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:18:13" (1/1) ... [2018-01-25 03:18:13,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f79335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:13, skipping insertion in model container [2018-01-25 03:18:13,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 03:18:13" (1/1) ... [2018-01-25 03:18:13,917 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:18:13,997 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 03:18:14,172 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:18:14,199 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 03:18:14,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14 WrapperNode [2018-01-25 03:18:14,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 03:18:14,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 03:18:14,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 03:18:14,209 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 03:18:14,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (1/1) ... [2018-01-25 03:18:14,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 03:18:14,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 03:18:14,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 03:18:14,242 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 03:18:14,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (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 [2018-01-25 03:18:14,314 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 03:18:14,314 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 03:18:14,314 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-25 03:18:14,315 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 03:18:14,315 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 03:18:14,316 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 03:18:14,316 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 03:18:14,316 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-25 03:18:14,316 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 03:18:14,316 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 03:18:14,317 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 03:18:14,905 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 03:18:14,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:18:14 BoogieIcfgContainer [2018-01-25 03:18:14,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 03:18:14,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 03:18:14,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 03:18:14,912 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 03:18:14,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 03:18:13" (1/3) ... [2018-01-25 03:18:14,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ffac96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:18:14, skipping insertion in model container [2018-01-25 03:18:14,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 03:18:14" (2/3) ... [2018-01-25 03:18:14,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ffac96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 03:18:14, skipping insertion in model container [2018-01-25 03:18:14,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 03:18:14" (3/3) ... [2018-01-25 03:18:14,918 INFO L105 eAbstractionObserver]: Analyzing ICFG list-ext_flag_1_true-valid-memsafety.i [2018-01-25 03:18:14,928 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 03:18:14,941 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 37 error locations. [2018-01-25 03:18:15,010 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 03:18:15,010 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 03:18:15,011 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 03:18:15,011 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 03:18:15,011 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 03:18:15,011 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 03:18:15,011 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 03:18:15,011 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 03:18:15,012 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 03:18:15,037 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-01-25 03:18:15,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-01-25 03:18:15,045 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:15,046 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:15,047 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:15,052 INFO L82 PathProgramCache]: Analyzing trace with hash 463338555, now seen corresponding path program 1 times [2018-01-25 03:18:15,055 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:15,117 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:15,118 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:15,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:15,118 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:15,189 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:15,247 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:15,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-25 03:18:15,248 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:15,251 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-25 03:18:15,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-25 03:18:15,268 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-25 03:18:15,271 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 2 states. [2018-01-25 03:18:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:15,410 INFO L93 Difference]: Finished difference Result 152 states and 171 transitions. [2018-01-25 03:18:15,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-25 03:18:15,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-01-25 03:18:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:15,422 INFO L225 Difference]: With dead ends: 152 [2018-01-25 03:18:15,422 INFO L226 Difference]: Without dead ends: 89 [2018-01-25 03:18:15,426 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 [2018-01-25 03:18:15,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-25 03:18:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-01-25 03:18:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-25 03:18:15,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-01-25 03:18:15,468 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 12 [2018-01-25 03:18:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:15,468 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-01-25 03:18:15,469 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-25 03:18:15,469 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-01-25 03:18:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 03:18:15,470 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:15,470 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:15,470 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:15,471 INFO L82 PathProgramCache]: Analyzing trace with hash -753673629, now seen corresponding path program 1 times [2018-01-25 03:18:15,471 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:15,472 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:15,472 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:15,473 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:15,473 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:15,501 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:15,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:15,600 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:15,601 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:18:15,601 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:15,603 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:18:15,605 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:18:15,605 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:18:15,606 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 5 states. [2018-01-25 03:18:16,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:16,016 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2018-01-25 03:18:16,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 03:18:16,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-25 03:18:16,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:16,018 INFO L225 Difference]: With dead ends: 115 [2018-01-25 03:18:16,018 INFO L226 Difference]: Without dead ends: 97 [2018-01-25 03:18:16,019 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:18:16,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-01-25 03:18:16,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 85. [2018-01-25 03:18:16,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-25 03:18:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2018-01-25 03:18:16,032 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 15 [2018-01-25 03:18:16,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:16,033 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2018-01-25 03:18:16,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:18:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2018-01-25 03:18:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 03:18:16,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:16,034 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:16,034 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:16,034 INFO L82 PathProgramCache]: Analyzing trace with hash -753673628, now seen corresponding path program 1 times [2018-01-25 03:18:16,034 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:16,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:16,036 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:16,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:16,036 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:16,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:16,217 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:16,217 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 03:18:16,217 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:16,218 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 03:18:16,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 03:18:16,218 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 03:18:16,218 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand 5 states. [2018-01-25 03:18:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:16,600 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2018-01-25 03:18:16,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 03:18:16,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-25 03:18:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:16,602 INFO L225 Difference]: With dead ends: 136 [2018-01-25 03:18:16,602 INFO L226 Difference]: Without dead ends: 118 [2018-01-25 03:18:16,603 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:18:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-25 03:18:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2018-01-25 03:18:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-25 03:18:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2018-01-25 03:18:16,620 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 15 [2018-01-25 03:18:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:16,620 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2018-01-25 03:18:16,620 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 03:18:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2018-01-25 03:18:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:18:16,622 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:16,622 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] [2018-01-25 03:18:16,622 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:16,622 INFO L82 PathProgramCache]: Analyzing trace with hash 435110854, now seen corresponding path program 1 times [2018-01-25 03:18:16,622 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:16,623 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:16,624 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:16,624 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:16,624 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:16,659 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:16,823 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:16,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 03:18:16,824 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:16,824 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 03:18:16,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 03:18:16,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 03:18:16,825 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 6 states. [2018-01-25 03:18:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:17,170 INFO L93 Difference]: Finished difference Result 167 states and 183 transitions. [2018-01-25 03:18:17,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:18:17,170 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-01-25 03:18:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:17,172 INFO L225 Difference]: With dead ends: 167 [2018-01-25 03:18:17,173 INFO L226 Difference]: Without dead ends: 163 [2018-01-25 03:18:17,173 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-25 03:18:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-25 03:18:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 138. [2018-01-25 03:18:17,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-25 03:18:17,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2018-01-25 03:18:17,203 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 28 [2018-01-25 03:18:17,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:17,203 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2018-01-25 03:18:17,203 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 03:18:17,203 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2018-01-25 03:18:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 03:18:17,204 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:17,205 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:17,205 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:17,205 INFO L82 PathProgramCache]: Analyzing trace with hash 560475115, now seen corresponding path program 1 times [2018-01-25 03:18:17,205 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:17,206 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:17,207 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:17,207 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:17,207 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:17,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:17,225 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:17,368 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:17,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 03:18:17,369 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:17,369 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:18:17,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:18:17,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:18:17,370 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand 7 states. [2018-01-25 03:18:17,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:17,632 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2018-01-25 03:18:17,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:18:17,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-25 03:18:17,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:17,634 INFO L225 Difference]: With dead ends: 195 [2018-01-25 03:18:17,635 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 03:18:17,635 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:18:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 03:18:17,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2018-01-25 03:18:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-25 03:18:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 130 transitions. [2018-01-25 03:18:17,647 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 130 transitions. Word has length 28 [2018-01-25 03:18:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:17,648 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 130 transitions. [2018-01-25 03:18:17,648 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:18:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 130 transitions. [2018-01-25 03:18:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 03:18:17,649 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:17,649 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:17,649 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:17,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1958112025, now seen corresponding path program 1 times [2018-01-25 03:18:17,649 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:17,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:17,650 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:17,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:17,650 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:17,669 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:17,824 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:17,824 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:18:17,825 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:17,825 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:18:17,825 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:18:17,825 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:18:17,825 INFO L87 Difference]: Start difference. First operand 119 states and 130 transitions. Second operand 7 states. [2018-01-25 03:18:18,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:18,219 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2018-01-25 03:18:18,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 03:18:18,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-25 03:18:18,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:18,220 INFO L225 Difference]: With dead ends: 122 [2018-01-25 03:18:18,221 INFO L226 Difference]: Without dead ends: 120 [2018-01-25 03:18:18,221 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:18:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-01-25 03:18:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2018-01-25 03:18:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-01-25 03:18:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2018-01-25 03:18:18,234 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 30 [2018-01-25 03:18:18,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:18,234 INFO L432 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2018-01-25 03:18:18,234 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:18:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2018-01-25 03:18:18,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 03:18:18,235 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:18,236 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:18,236 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:18,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1958112026, now seen corresponding path program 1 times [2018-01-25 03:18:18,236 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:18,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:18,237 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:18,237 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:18,237 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:18,257 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:18,543 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:18,543 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 03:18:18,544 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:18,544 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 03:18:18,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 03:18:18,545 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-25 03:18:18,545 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 7 states. [2018-01-25 03:18:18,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:18,880 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2018-01-25 03:18:18,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 03:18:18,881 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-25 03:18:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:18,882 INFO L225 Difference]: With dead ends: 140 [2018-01-25 03:18:18,882 INFO L226 Difference]: Without dead ends: 132 [2018-01-25 03:18:18,883 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-01-25 03:18:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-01-25 03:18:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2018-01-25 03:18:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-25 03:18:18,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2018-01-25 03:18:18,893 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 30 [2018-01-25 03:18:18,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:18,896 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2018-01-25 03:18:18,896 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 03:18:18,896 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2018-01-25 03:18:18,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-25 03:18:18,898 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:18,898 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:18,898 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:18,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1625837310, now seen corresponding path program 1 times [2018-01-25 03:18:18,898 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:18,899 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:18,900 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:18,900 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:18,900 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:18,918 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:19,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:19,217 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 03:18:19,218 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 03:18:19,218 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 03:18:19,218 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 03:18:19,218 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 03:18:19,219 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-01-25 03:18:19,219 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 8 states. [2018-01-25 03:18:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 03:18:19,735 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2018-01-25 03:18:19,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 03:18:19,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-01-25 03:18:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 03:18:19,736 INFO L225 Difference]: With dead ends: 135 [2018-01-25 03:18:19,737 INFO L226 Difference]: Without dead ends: 105 [2018-01-25 03:18:19,737 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-01-25 03:18:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-01-25 03:18:19,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2018-01-25 03:18:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-01-25 03:18:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 96 transitions. [2018-01-25 03:18:19,744 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 96 transitions. Word has length 31 [2018-01-25 03:18:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 03:18:19,745 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 96 transitions. [2018-01-25 03:18:19,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 03:18:19,745 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 96 transitions. [2018-01-25 03:18:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-25 03:18:19,746 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 03:18:19,746 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 03:18:19,747 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr36EnsuresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-25 03:18:19,747 INFO L82 PathProgramCache]: Analyzing trace with hash 77859536, now seen corresponding path program 1 times [2018-01-25 03:18:19,747 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 03:18:19,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:19,748 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 03:18:19,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 03:18:19,748 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 03:18:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 03:18:19,785 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 03:18:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 03:18:20,487 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 03:18:20,487 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 03:18:20,488 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2018-01-25 03:18:20,492 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [8], [10], [14], [16], [19], [25], [27], [28], [31], [32], [37], [38], [47], [48], [54], [56], [59], [62], [66], [69], [72], [76], [78], [83], [118], [125], [129], [131], [136], [150], [153], [156], [161], [162], [170], [171], [172] [2018-01-25 03:18:20,565 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 03:18:20,565 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