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_smtcomp.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 06:20:37,251 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 06:20:37,253 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 06:20:37,268 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 06:20:37,268 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 06:20:37,269 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 06:20:37,270 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 06:20:37,272 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 06:20:37,274 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 06:20:37,275 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 06:20:37,275 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 06:20:37,276 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 06:20:37,276 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 06:20:37,277 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 06:20:37,277 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 06:20:37,281 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 06:20:37,284 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 06:20:37,285 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 06:20:37,287 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 06:20:37,288 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 06:20:37,290 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 06:20:37,290 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 06:20:37,290 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 06:20:37,291 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 06:20:37,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 06:20:37,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 06:20:37,293 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 06:20:37,294 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 06:20:37,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 06:20:37,294 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 06:20:37,295 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 06:20:37,295 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_smtcomp.epf [2018-01-25 06:20:37,305 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 06:20:37,305 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 06:20:37,306 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 06:20:37,306 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 06:20:37,306 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 06:20:37,307 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 06:20:37,307 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 06:20:37,307 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 06:20:37,308 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 06:20:37,308 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 06:20:37,308 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 06:20:37,308 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 06:20:37,308 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 06:20:37,309 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 06:20:37,309 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 06:20:37,309 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 06:20:37,309 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 06:20:37,309 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 06:20:37,310 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 06:20:37,310 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 06:20:37,310 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 06:20:37,310 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 06:20:37,310 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 06:20:37,311 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 06:20:37,311 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:20:37,311 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 06:20:37,311 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 06:20:37,312 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 06:20:37,313 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 06:20:37,313 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 06:20:37,348 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 06:20:37,361 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 06:20:37,365 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 06:20:37,366 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 06:20:37,367 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 06:20:37,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:20:37,530 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 06:20:37,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 06:20:37,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 06:20:37,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 06:20:37,543 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 06:20:37,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f00f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37, skipping insertion in model container [2018-01-25 06:20:37,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,563 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:20:37,605 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:20:37,713 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:20:37,732 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:20:37,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37 WrapperNode [2018-01-25 06:20:37,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 06:20:37,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 06:20:37,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 06:20:37,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 06:20:37,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (1/1) ... [2018-01-25 06:20:37,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 06:20:37,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 06:20:37,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 06:20:37,778 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 06:20:37,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (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 06:20:37,823 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 06:20:37,823 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 06:20:37,823 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 06:20:37,823 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 06:20:37,823 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 06:20:37,823 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 06:20:37,824 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 06:20:37,825 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 06:20:37,825 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 06:20:38,316 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 06:20:38,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:20:38 BoogieIcfgContainer [2018-01-25 06:20:38,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 06:20:38,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 06:20:38,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 06:20:38,358 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 06:20:38,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 06:20:37" (1/3) ... [2018-01-25 06:20:38,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5aee71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:20:38, skipping insertion in model container [2018-01-25 06:20:38,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:20:37" (2/3) ... [2018-01-25 06:20:38,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5aee71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:20:38, skipping insertion in model container [2018-01-25 06:20:38,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:20:38" (3/3) ... [2018-01-25 06:20:38,362 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-token_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:20:38,371 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 06:20:38,379 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 55 error locations. [2018-01-25 06:20:38,432 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 06:20:38,432 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 06:20:38,433 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 06:20:38,433 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 06:20:38,433 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 06:20:38,433 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 06:20:38,433 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 06:20:38,433 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 06:20:38,434 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 06:20:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-01-25 06:20:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:20:38,465 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:38,466 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:38,467 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:38,472 INFO L82 PathProgramCache]: Analyzing trace with hash 460791465, now seen corresponding path program 1 times [2018-01-25 06:20:38,475 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:38,531 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:38,532 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:38,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:38,532 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:38,581 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:38,649 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 06:20:38,652 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:38,652 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:20:38,652 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:38,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:20:38,669 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:20:38,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:20:38,672 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 4 states. [2018-01-25 06:20:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:38,965 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2018-01-25 06:20:38,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 06:20:38,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:20:38,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:38,978 INFO L225 Difference]: With dead ends: 269 [2018-01-25 06:20:38,978 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 06:20:38,982 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:38,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 06:20:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2018-01-25 06:20:39,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-25 06:20:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-01-25 06:20:39,022 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 8 [2018-01-25 06:20:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:39,022 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-01-25 06:20:39,022 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:20:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-01-25 06:20:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:20:39,023 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:39,023 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:39,024 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:39,024 INFO L82 PathProgramCache]: Analyzing trace with hash 460791466, now seen corresponding path program 1 times [2018-01-25 06:20:39,024 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:39,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,025 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:39,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,025 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:39,042 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:39,107 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 06:20:39,108 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:39,108 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:20:39,108 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:39,109 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:20:39,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:20:39,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:20:39,110 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 4 states. [2018-01-25 06:20:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:39,279 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-01-25 06:20:39,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 06:20:39,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:20:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:39,281 INFO L225 Difference]: With dead ends: 149 [2018-01-25 06:20:39,281 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 06:20:39,282 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:39,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 06:20:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2018-01-25 06:20:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-25 06:20:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-01-25 06:20:39,294 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 8 [2018-01-25 06:20:39,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:39,294 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-01-25 06:20:39,295 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:20:39,295 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-01-25 06:20:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 06:20:39,295 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:39,295 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:39,296 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:39,296 INFO L82 PathProgramCache]: Analyzing trace with hash 108566574, now seen corresponding path program 1 times [2018-01-25 06:20:39,296 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:39,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,297 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:39,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,298 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:39,318 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:39,395 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 06:20:39,395 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:39,395 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:20:39,395 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:39,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:20:39,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:20:39,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:39,396 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 5 states. [2018-01-25 06:20:39,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:39,676 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-01-25 06:20:39,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:20:39,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-25 06:20:39,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:39,678 INFO L225 Difference]: With dead ends: 241 [2018-01-25 06:20:39,678 INFO L226 Difference]: Without dead ends: 223 [2018-01-25 06:20:39,679 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 06:20:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-25 06:20:39,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 165. [2018-01-25 06:20:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-25 06:20:39,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 194 transitions. [2018-01-25 06:20:39,692 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 194 transitions. Word has length 15 [2018-01-25 06:20:39,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:39,692 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 194 transitions. [2018-01-25 06:20:39,692 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:20:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 194 transitions. [2018-01-25 06:20:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-25 06:20:39,693 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:39,693 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:39,693 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:39,694 INFO L82 PathProgramCache]: Analyzing trace with hash 108566573, now seen corresponding path program 1 times [2018-01-25 06:20:39,694 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:39,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,695 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:39,695 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,695 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:39,709 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:39,747 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 06:20:39,747 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:39,747 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:20:39,747 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:39,748 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:20:39,748 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:20:39,748 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:20:39,748 INFO L87 Difference]: Start difference. First operand 165 states and 194 transitions. Second operand 4 states. [2018-01-25 06:20:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:39,912 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2018-01-25 06:20:39,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:20:39,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-25 06:20:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:39,914 INFO L225 Difference]: With dead ends: 169 [2018-01-25 06:20:39,914 INFO L226 Difference]: Without dead ends: 152 [2018-01-25 06:20:39,914 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-25 06:20:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2018-01-25 06:20:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 06:20:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-25 06:20:39,927 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 15 [2018-01-25 06:20:39,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:39,927 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-25 06:20:39,928 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:20:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-25 06:20:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:20:39,929 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:39,929 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:39,929 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash 197081690, now seen corresponding path program 1 times [2018-01-25 06:20:39,930 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:39,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,931 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:39,931 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:39,931 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:39,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:39,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:40,048 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 06:20:40,048 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:40,048 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:20:40,048 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:40,049 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:20:40,049 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:20:40,049 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:40,049 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-25 06:20:40,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:40,283 INFO L93 Difference]: Finished difference Result 241 states and 257 transitions. [2018-01-25 06:20:40,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:20:40,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 06:20:40,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:40,284 INFO L225 Difference]: With dead ends: 241 [2018-01-25 06:20:40,284 INFO L226 Difference]: Without dead ends: 240 [2018-01-25 06:20:40,285 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:20:40,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-25 06:20:40,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 149. [2018-01-25 06:20:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 06:20:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-25 06:20:40,298 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 18 [2018-01-25 06:20:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:40,298 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-25 06:20:40,298 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:20:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-25 06:20:40,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:20:40,299 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:40,299 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:40,299 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:40,300 INFO L82 PathProgramCache]: Analyzing trace with hash 197081689, now seen corresponding path program 1 times [2018-01-25 06:20:40,300 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:40,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,301 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:40,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,301 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:40,314 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:40,350 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 06:20:40,351 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:40,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:20:40,351 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:40,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:20:40,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:20:40,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:40,352 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-25 06:20:40,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:40,516 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2018-01-25 06:20:40,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:20:40,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 06:20:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:40,518 INFO L225 Difference]: With dead ends: 213 [2018-01-25 06:20:40,518 INFO L226 Difference]: Without dead ends: 212 [2018-01-25 06:20:40,518 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 06:20:40,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-25 06:20:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 148. [2018-01-25 06:20:40,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-25 06:20:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-25 06:20:40,529 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 18 [2018-01-25 06:20:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:40,530 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-25 06:20:40,530 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:20:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-25 06:20:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 06:20:40,531 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:40,531 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:40,531 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:40,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1794584241, now seen corresponding path program 1 times [2018-01-25 06:20:40,531 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:40,532 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,532 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:40,533 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,533 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:40,547 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:40,580 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 06:20:40,581 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:40,581 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:20:40,581 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:40,581 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:20:40,581 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:20:40,582 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:40,582 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 5 states. [2018-01-25 06:20:40,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:40,695 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2018-01-25 06:20:40,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:20:40,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 06:20:40,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:40,696 INFO L225 Difference]: With dead ends: 150 [2018-01-25 06:20:40,696 INFO L226 Difference]: Without dead ends: 149 [2018-01-25 06:20:40,696 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 06:20:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-25 06:20:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2018-01-25 06:20:40,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-25 06:20:40,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2018-01-25 06:20:40,704 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 19 [2018-01-25 06:20:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:40,704 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2018-01-25 06:20:40,704 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:20:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2018-01-25 06:20:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-25 06:20:40,705 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:40,705 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:40,706 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1794584242, now seen corresponding path program 1 times [2018-01-25 06:20:40,706 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:40,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,707 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:40,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,707 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:40,721 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:40,785 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 06:20:40,785 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:40,785 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:20:40,785 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:40,785 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:20:40,789 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:20:40,789 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:20:40,790 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 5 states. [2018-01-25 06:20:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:40,911 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2018-01-25 06:20:40,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:20:40,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-25 06:20:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:40,912 INFO L225 Difference]: With dead ends: 147 [2018-01-25 06:20:40,912 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 06:20:40,913 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:20:40,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 06:20:40,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-25 06:20:40,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-25 06:20:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-25 06:20:40,921 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 19 [2018-01-25 06:20:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:40,922 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-25 06:20:40,922 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:20:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-25 06:20:40,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:20:40,923 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:40,923 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] [2018-01-25 06:20:40,923 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:40,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1293732257, now seen corresponding path program 1 times [2018-01-25 06:20:40,923 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:40,924 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,924 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:40,925 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:40,925 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:40,943 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:41,101 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 06:20:41,102 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:41,102 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:20:41,102 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:41,102 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:20:41,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:20:41,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:20:41,103 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 9 states. [2018-01-25 06:20:41,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:41,371 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-25 06:20:41,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 06:20:41,371 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 06:20:41,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:41,372 INFO L225 Difference]: With dead ends: 148 [2018-01-25 06:20:41,372 INFO L226 Difference]: Without dead ends: 147 [2018-01-25 06:20:41,372 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-25 06:20:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-25 06:20:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-01-25 06:20:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-25 06:20:41,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-25 06:20:41,381 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 22 [2018-01-25 06:20:41,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:41,381 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-25 06:20:41,381 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:20:41,381 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-25 06:20:41,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:20:41,382 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:41,382 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] [2018-01-25 06:20:41,382 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:41,382 INFO L82 PathProgramCache]: Analyzing trace with hash -1293732256, now seen corresponding path program 1 times [2018-01-25 06:20:41,382 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:41,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:41,383 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:41,383 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:41,383 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:41,399 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:41,557 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 06:20:41,557 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:41,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:20:41,557 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:41,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:20:41,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:20:41,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:20:41,558 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand 9 states. [2018-01-25 06:20:42,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:42,101 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2018-01-25 06:20:42,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-25 06:20:42,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 06:20:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:42,103 INFO L225 Difference]: With dead ends: 147 [2018-01-25 06:20:42,103 INFO L226 Difference]: Without dead ends: 146 [2018-01-25 06:20:42,103 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-25 06:20:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-25 06:20:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2018-01-25 06:20:42,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-25 06:20:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2018-01-25 06:20:42,113 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 22 [2018-01-25 06:20:42,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:42,113 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2018-01-25 06:20:42,113 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:20:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2018-01-25 06:20:42,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:20:42,115 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:42,115 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] [2018-01-25 06:20:42,115 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:42,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1249497819, now seen corresponding path program 1 times [2018-01-25 06:20:42,115 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:42,116 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:42,116 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:42,116 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:42,116 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:42,128 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:42,238 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 06:20:42,238 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:42,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:20:42,238 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:42,239 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:20:42,239 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:20:42,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:20:42,239 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 9 states. [2018-01-25 06:20:42,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:42,742 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-01-25 06:20:42,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 06:20:42,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 06:20:42,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:42,743 INFO L225 Difference]: With dead ends: 146 [2018-01-25 06:20:42,743 INFO L226 Difference]: Without dead ends: 145 [2018-01-25 06:20:42,744 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 06:20:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-25 06:20:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-25 06:20:42,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-25 06:20:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2018-01-25 06:20:42,750 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 22 [2018-01-25 06:20:42,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:42,750 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2018-01-25 06:20:42,751 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:20:42,751 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2018-01-25 06:20:42,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:20:42,751 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:42,752 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] [2018-01-25 06:20:42,752 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:42,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1249497820, now seen corresponding path program 1 times [2018-01-25 06:20:42,752 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:42,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:42,753 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:42,753 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:42,753 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:42,766 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:42,935 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 06:20:42,935 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:20:42,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 06:20:42,935 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:20:42,936 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 06:20:42,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 06:20:42,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 06:20:42,936 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 10 states. [2018-01-25 06:20:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:20:43,520 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-25 06:20:43,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 06:20:43,554 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 06:20:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:20:43,555 INFO L225 Difference]: With dead ends: 148 [2018-01-25 06:20:43,555 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 06:20:43,555 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 06:20:43,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 06:20:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2018-01-25 06:20:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-25 06:20:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2018-01-25 06:20:43,561 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 22 [2018-01-25 06:20:43,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:20:43,561 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2018-01-25 06:20:43,561 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 06:20:43,561 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2018-01-25 06:20:43,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-25 06:20:43,562 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:20:43,563 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:20:43,563 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr54EnsuresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 06:20:43,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1046747597, now seen corresponding path program 1 times [2018-01-25 06:20:43,563 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:20:43,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:43,564 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:20:43,564 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:20:43,565 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:20:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:20:43,583 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:20:43,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:20:43,917 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:20:43,917 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:20:43,918 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-25 06:20:43,920 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [62], [65], [66], [69], [72], [75], [76], [79], [82], [86], [91], [95], [103], [105], [106], [112], [116], [117], [124], [128], [134], [137], [243], [244], [248], [249], [250] [2018-01-25 06:20:43,965 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:20:43,965 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