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.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:12:00,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:12:00,939 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:12:00,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:12:00,952 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:12:00,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:12:00,954 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:12:00,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:12:00,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:12:00,957 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:12:00,958 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:12:00,958 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:12:00,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:12:00,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:12:00,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:12:00,964 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:12:00,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:12:00,968 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:12:00,969 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:12:00,970 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:12:00,973 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 16:12:00,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 16:12:00,973 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 16:12:00,974 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 16:12:00,975 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 16:12:00,976 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 16:12:00,976 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 16:12:00,977 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 16:12:00,977 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 16:12:00,977 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:12:00,978 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:12:00,978 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.epf [2018-01-24 16:12:00,988 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:12:00,989 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:12:00,989 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:12:00,990 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:12:00,990 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:12:00,990 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:12:00,990 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:12:00,991 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:12:00,991 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:12:00,991 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:12:00,991 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:12:00,991 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:12:00,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:12:00,992 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:12:00,992 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:12:00,992 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:12:00,992 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:12:00,993 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:12:00,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:12:00,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:12:00,993 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:12:00,994 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:12:00,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:12:00,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:12:00,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:12:00,994 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:12:00,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:12:00,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:12:00,995 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 16:12:00,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:12:00,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:12:00,995 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:12:00,996 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 16:12:00,997 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:12:00,997 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:12:01,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:12:01,043 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:12:01,049 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:12:01,050 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:12:01,051 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:12:01,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token_true-unreach-call_true-valid-memsafety.i [2018-01-24 16:12:01,233 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:12:01,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:12:01,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:12:01,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:12:01,245 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:12:01,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41641836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01, skipping insertion in model container [2018-01-24 16:12:01,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,269 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:12:01,313 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:12:01,429 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:12:01,447 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:12:01,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01 WrapperNode [2018-01-24 16:12:01,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:12:01,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:12:01,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:12:01,455 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:12:01,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (1/1) ... [2018-01-24 16:12:01,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:12:01,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:12:01,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:12:01,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:12:01,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (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 [2018-01-24 16:12:01,536 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:12:01,536 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:12:01,536 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:12:01,536 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:12:01,536 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:12:01,537 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 16:12:01,538 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:12:01,538 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:12:01,538 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:12:02,006 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:12:02,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:12:02 BoogieIcfgContainer [2018-01-24 16:12:02,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:12:02,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 16:12:02,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 16:12:02,010 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 16:12:02,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 04:12:01" (1/3) ... [2018-01-24 16:12:02,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca367e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:12:02, skipping insertion in model container [2018-01-24 16:12:02,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:12:01" (2/3) ... [2018-01-24 16:12:02,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca367e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 04:12:02, skipping insertion in model container [2018-01-24 16:12:02,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:12:02" (3/3) ... [2018-01-24 16:12:02,014 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-token_true-unreach-call_true-valid-memsafety.i [2018-01-24 16:12:02,020 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 16:12:02,028 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 55 error locations. [2018-01-24 16:12:02,066 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 16:12:02,066 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 16:12:02,066 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 16:12:02,066 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 16:12:02,066 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 16:12:02,067 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 16:12:02,067 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 16:12:02,067 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 16:12:02,068 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 16:12:02,086 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2018-01-24 16:12:02,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 16:12:02,091 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:02,092 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:02,093 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]=== [2018-01-24 16:12:02,096 INFO L82 PathProgramCache]: Analyzing trace with hash 460791465, now seen corresponding path program 1 times [2018-01-24 16:12:02,098 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:02,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:02,138 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:02,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:02,139 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:02,187 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:02,268 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:02,269 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:12:02,269 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:02,271 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:12:02,282 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:12:02,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:12:02,284 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 4 states. [2018-01-24 16:12:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:02,618 INFO L93 Difference]: Finished difference Result 269 states and 320 transitions. [2018-01-24 16:12:02,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 16:12:02,619 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 16:12:02,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:02,629 INFO L225 Difference]: With dead ends: 269 [2018-01-24 16:12:02,629 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 16:12:02,633 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 [2018-01-24 16:12:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 16:12:02,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 125. [2018-01-24 16:12:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-24 16:12:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2018-01-24 16:12:02,670 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 8 [2018-01-24 16:12:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:02,670 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2018-01-24 16:12:02,671 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:12:02,671 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2018-01-24 16:12:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 16:12:02,671 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:02,671 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:02,671 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]=== [2018-01-24 16:12:02,671 INFO L82 PathProgramCache]: Analyzing trace with hash 460791466, now seen corresponding path program 1 times [2018-01-24 16:12:02,672 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:02,672 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:02,673 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:02,673 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:02,673 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:02,690 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:02,888 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:02,888 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:12:02,888 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:02,890 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:12:02,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:12:02,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:12:02,897 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand 4 states. [2018-01-24 16:12:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:03,272 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2018-01-24 16:12:03,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 16:12:03,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 16:12:03,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:03,275 INFO L225 Difference]: With dead ends: 149 [2018-01-24 16:12:03,275 INFO L226 Difference]: Without dead ends: 146 [2018-01-24 16:12:03,276 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:12:03,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-24 16:12:03,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 122. [2018-01-24 16:12:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-24 16:12:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2018-01-24 16:12:03,289 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 8 [2018-01-24 16:12:03,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:03,289 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2018-01-24 16:12:03,289 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:12:03,289 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2018-01-24 16:12:03,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 16:12:03,290 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:03,290 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:03,290 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]=== [2018-01-24 16:12:03,291 INFO L82 PathProgramCache]: Analyzing trace with hash 108566574, now seen corresponding path program 1 times [2018-01-24 16:12:03,291 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:03,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:03,292 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:03,292 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:03,292 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:03,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:03,323 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:03,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:03,446 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:03,446 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:12:03,446 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:03,447 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:12:03,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:12:03,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:12:03,451 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand 5 states. [2018-01-24 16:12:03,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:03,753 INFO L93 Difference]: Finished difference Result 241 states and 245 transitions. [2018-01-24 16:12:03,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:12:03,753 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-24 16:12:03,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:03,755 INFO L225 Difference]: With dead ends: 241 [2018-01-24 16:12:03,756 INFO L226 Difference]: Without dead ends: 223 [2018-01-24 16:12:03,756 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 [2018-01-24 16:12:03,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-01-24 16:12:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 165. [2018-01-24 16:12:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-01-24 16:12:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 194 transitions. [2018-01-24 16:12:03,770 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 194 transitions. Word has length 15 [2018-01-24 16:12:03,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:03,771 INFO L432 AbstractCegarLoop]: Abstraction has 165 states and 194 transitions. [2018-01-24 16:12:03,771 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:12:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 194 transitions. [2018-01-24 16:12:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 16:12:03,772 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:03,772 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:03,772 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]=== [2018-01-24 16:12:03,773 INFO L82 PathProgramCache]: Analyzing trace with hash 108566573, now seen corresponding path program 1 times [2018-01-24 16:12:03,773 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:03,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:03,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:03,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:03,774 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:03,790 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:03,849 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:03,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 16:12:03,852 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:03,853 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 16:12:03,853 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 16:12:03,853 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 16:12:03,853 INFO L87 Difference]: Start difference. First operand 165 states and 194 transitions. Second operand 4 states. [2018-01-24 16:12:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:04,083 INFO L93 Difference]: Finished difference Result 169 states and 194 transitions. [2018-01-24 16:12:04,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:12:04,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 16:12:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:04,085 INFO L225 Difference]: With dead ends: 169 [2018-01-24 16:12:04,085 INFO L226 Difference]: Without dead ends: 152 [2018-01-24 16:12:04,086 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 [2018-01-24 16:12:04,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-01-24 16:12:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 150. [2018-01-24 16:12:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-24 16:12:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 162 transitions. [2018-01-24 16:12:04,114 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 162 transitions. Word has length 15 [2018-01-24 16:12:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:04,115 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 162 transitions. [2018-01-24 16:12:04,115 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 16:12:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 162 transitions. [2018-01-24 16:12:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 16:12:04,116 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:04,116 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:04,117 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]=== [2018-01-24 16:12:04,117 INFO L82 PathProgramCache]: Analyzing trace with hash 197081690, now seen corresponding path program 1 times [2018-01-24 16:12:04,117 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:04,118 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,119 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:04,119 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,119 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:04,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:04,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:04,238 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:04,238 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:12:04,238 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:04,238 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:12:04,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:12:04,239 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:12:04,239 INFO L87 Difference]: Start difference. First operand 150 states and 162 transitions. Second operand 5 states. [2018-01-24 16:12:04,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:04,470 INFO L93 Difference]: Finished difference Result 241 states and 257 transitions. [2018-01-24 16:12:04,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:12:04,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 16:12:04,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:04,472 INFO L225 Difference]: With dead ends: 241 [2018-01-24 16:12:04,472 INFO L226 Difference]: Without dead ends: 240 [2018-01-24 16:12:04,472 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 [2018-01-24 16:12:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2018-01-24 16:12:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 149. [2018-01-24 16:12:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-24 16:12:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 160 transitions. [2018-01-24 16:12:04,485 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 160 transitions. Word has length 18 [2018-01-24 16:12:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:04,485 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 160 transitions. [2018-01-24 16:12:04,485 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:12:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 160 transitions. [2018-01-24 16:12:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 16:12:04,486 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:04,486 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:04,487 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]=== [2018-01-24 16:12:04,487 INFO L82 PathProgramCache]: Analyzing trace with hash 197081689, now seen corresponding path program 1 times [2018-01-24 16:12:04,487 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:04,488 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,488 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:04,488 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,488 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:04,503 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:04,540 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:04,540 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:12:04,541 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:04,541 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:12:04,541 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:12:04,541 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:12:04,541 INFO L87 Difference]: Start difference. First operand 149 states and 160 transitions. Second operand 5 states. [2018-01-24 16:12:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:04,719 INFO L93 Difference]: Finished difference Result 213 states and 225 transitions. [2018-01-24 16:12:04,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:12:04,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-24 16:12:04,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:04,720 INFO L225 Difference]: With dead ends: 213 [2018-01-24 16:12:04,720 INFO L226 Difference]: Without dead ends: 212 [2018-01-24 16:12:04,721 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 [2018-01-24 16:12:04,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2018-01-24 16:12:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 148. [2018-01-24 16:12:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2018-01-24 16:12:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2018-01-24 16:12:04,729 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 18 [2018-01-24 16:12:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:04,729 INFO L432 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2018-01-24 16:12:04,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:12:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2018-01-24 16:12:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 16:12:04,730 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:04,730 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:04,730 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]=== [2018-01-24 16:12:04,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1794584241, now seen corresponding path program 1 times [2018-01-24 16:12:04,731 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:04,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,732 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:04,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,732 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:04,745 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:04,782 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:04,782 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:12:04,782 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:04,782 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:12:04,783 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:12:04,783 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:12:04,783 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand 5 states. [2018-01-24 16:12:04,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:04,898 INFO L93 Difference]: Finished difference Result 150 states and 158 transitions. [2018-01-24 16:12:04,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 16:12:04,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-24 16:12:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:04,900 INFO L225 Difference]: With dead ends: 150 [2018-01-24 16:12:04,900 INFO L226 Difference]: Without dead ends: 149 [2018-01-24 16:12:04,900 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 [2018-01-24 16:12:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-01-24 16:12:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 147. [2018-01-24 16:12:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-01-24 16:12:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 156 transitions. [2018-01-24 16:12:04,907 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 156 transitions. Word has length 19 [2018-01-24 16:12:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:04,908 INFO L432 AbstractCegarLoop]: Abstraction has 147 states and 156 transitions. [2018-01-24 16:12:04,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:12:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 156 transitions. [2018-01-24 16:12:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 16:12:04,909 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:04,909 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 16:12:04,909 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]=== [2018-01-24 16:12:04,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1794584242, now seen corresponding path program 1 times [2018-01-24 16:12:04,909 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:04,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,910 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:04,910 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:04,910 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:04,923 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:04,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:04,972 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:04,972 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 16:12:04,973 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:04,973 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 16:12:04,973 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 16:12:04,973 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 16:12:04,973 INFO L87 Difference]: Start difference. First operand 147 states and 156 transitions. Second operand 5 states. [2018-01-24 16:12:05,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:05,159 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2018-01-24 16:12:05,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 16:12:05,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-24 16:12:05,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:05,160 INFO L225 Difference]: With dead ends: 147 [2018-01-24 16:12:05,160 INFO L226 Difference]: Without dead ends: 146 [2018-01-24 16:12:05,161 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 [2018-01-24 16:12:05,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-24 16:12:05,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2018-01-24 16:12:05,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2018-01-24 16:12:05,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2018-01-24 16:12:05,170 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 19 [2018-01-24 16:12:05,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:05,170 INFO L432 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2018-01-24 16:12:05,170 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 16:12:05,171 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2018-01-24 16:12:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:12:05,171 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:05,172 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] [2018-01-24 16:12:05,172 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]=== [2018-01-24 16:12:05,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1293732257, now seen corresponding path program 1 times [2018-01-24 16:12:05,172 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:05,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:05,173 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:05,173 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:05,173 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:05,199 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:05,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:05,435 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:05,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 16:12:05,435 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:05,436 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 16:12:05,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 16:12:05,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 16:12:05,437 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand 9 states. [2018-01-24 16:12:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:05,732 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-24 16:12:05,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 16:12:05,733 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 16:12:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:05,734 INFO L225 Difference]: With dead ends: 148 [2018-01-24 16:12:05,734 INFO L226 Difference]: Without dead ends: 147 [2018-01-24 16:12:05,735 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 16:12:05,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-01-24 16:12:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 145. [2018-01-24 16:12:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-01-24 16:12:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 153 transitions. [2018-01-24 16:12:05,744 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 153 transitions. Word has length 22 [2018-01-24 16:12:05,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:05,744 INFO L432 AbstractCegarLoop]: Abstraction has 145 states and 153 transitions. [2018-01-24 16:12:05,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 16:12:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 153 transitions. [2018-01-24 16:12:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:12:05,745 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:05,745 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] [2018-01-24 16:12:05,746 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]=== [2018-01-24 16:12:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1293732256, now seen corresponding path program 1 times [2018-01-24 16:12:05,746 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:05,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:05,747 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:05,747 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:05,747 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:05,764 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:05,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:05,979 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:05,979 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 16:12:05,980 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:05,980 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 16:12:05,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 16:12:05,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 16:12:05,980 INFO L87 Difference]: Start difference. First operand 145 states and 153 transitions. Second operand 9 states. [2018-01-24 16:12:06,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:06,512 INFO L93 Difference]: Finished difference Result 147 states and 153 transitions. [2018-01-24 16:12:06,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 16:12:06,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 16:12:06,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:06,513 INFO L225 Difference]: With dead ends: 147 [2018-01-24 16:12:06,514 INFO L226 Difference]: Without dead ends: 146 [2018-01-24 16:12:06,514 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 16:12:06,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2018-01-24 16:12:06,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2018-01-24 16:12:06,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-01-24 16:12:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2018-01-24 16:12:06,523 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 22 [2018-01-24 16:12:06,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:06,524 INFO L432 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2018-01-24 16:12:06,524 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 16:12:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2018-01-24 16:12:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:12:06,525 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:06,525 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] [2018-01-24 16:12:06,525 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]=== [2018-01-24 16:12:06,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1249497819, now seen corresponding path program 1 times [2018-01-24 16:12:06,526 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:06,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:06,527 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:06,527 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:06,527 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:06,541 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:06,723 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:06,723 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 16:12:06,723 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:06,724 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 16:12:06,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 16:12:06,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 16:12:06,724 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 9 states. [2018-01-24 16:12:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:07,226 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2018-01-24 16:12:07,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-24 16:12:07,226 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-24 16:12:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:07,227 INFO L225 Difference]: With dead ends: 146 [2018-01-24 16:12:07,227 INFO L226 Difference]: Without dead ends: 145 [2018-01-24 16:12:07,228 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-24 16:12:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2018-01-24 16:12:07,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2018-01-24 16:12:07,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-01-24 16:12:07,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 151 transitions. [2018-01-24 16:12:07,238 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 151 transitions. Word has length 22 [2018-01-24 16:12:07,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:07,238 INFO L432 AbstractCegarLoop]: Abstraction has 143 states and 151 transitions. [2018-01-24 16:12:07,238 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 16:12:07,238 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 151 transitions. [2018-01-24 16:12:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 16:12:07,240 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:07,240 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] [2018-01-24 16:12:07,241 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]=== [2018-01-24 16:12:07,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1249497820, now seen corresponding path program 1 times [2018-01-24 16:12:07,241 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:07,242 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:07,243 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:07,243 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:07,243 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:07,274 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:07,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:07,468 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 16:12:07,468 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 16:12:07,469 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 16:12:07,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 16:12:07,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 16:12:07,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-24 16:12:07,469 INFO L87 Difference]: Start difference. First operand 143 states and 151 transitions. Second operand 10 states. [2018-01-24 16:12:08,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 16:12:08,117 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-24 16:12:08,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 16:12:08,117 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-24 16:12:08,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 16:12:08,118 INFO L225 Difference]: With dead ends: 148 [2018-01-24 16:12:08,118 INFO L226 Difference]: Without dead ends: 140 [2018-01-24 16:12:08,119 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 [2018-01-24 16:12:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-24 16:12:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 119. [2018-01-24 16:12:08,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-01-24 16:12:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2018-01-24 16:12:08,130 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 22 [2018-01-24 16:12:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 16:12:08,131 INFO L432 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2018-01-24 16:12:08,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 16:12:08,131 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2018-01-24 16:12:08,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-01-24 16:12:08,134 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 16:12:08,134 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] [2018-01-24 16:12:08,134 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]=== [2018-01-24 16:12:08,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1046747597, now seen corresponding path program 1 times [2018-01-24 16:12:08,135 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 16:12:08,135 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:08,136 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 16:12:08,136 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 16:12:08,136 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 16:12:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 16:12:08,161 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 16:12:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 16:12:08,563 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 16:12:08,563 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 16:12:08,564 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 38 with the following transitions: [2018-01-24 16:12:08,566 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] [2018-01-24 16:12:08,619 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 16:12:08,620 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