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_precise.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-queue_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:19:02,001 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:19:02,003 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:19:02,018 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:19:02,018 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:19:02,019 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:19:02,020 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:19:02,021 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:19:02,022 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:19:02,023 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:19:02,024 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:19:02,024 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:19:02,025 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:19:02,025 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:19:02,026 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:19:02,029 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:19:02,031 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:19:02,033 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:19:02,034 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:19:02,035 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:19:02,038 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:19:02,038 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:19:02,038 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:19:02,039 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:19:02,040 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:19:02,041 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:19:02,042 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:19:02,042 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:19:02,043 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:19:02,043 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:19:02,044 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:19:02,044 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_precise.epf [2018-01-25 00:19:02,054 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:19:02,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:19:02,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:19:02,055 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:19:02,055 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:19:02,056 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:19:02,056 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:19:02,056 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:19:02,057 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:19:02,057 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:19:02,057 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:19:02,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:19:02,058 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:19:02,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:19:02,058 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:19:02,058 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:19:02,058 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:19:02,059 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:19:02,059 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:19:02,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:19:02,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:19:02,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:19:02,060 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:19:02,060 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:19:02,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:19:02,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:19:02,060 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:19:02,061 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:19:02,061 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:19:02,061 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:19:02,061 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:19:02,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:19:02,062 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:19:02,062 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:19:02,063 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:19:02,063 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:19:02,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:19:02,110 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:19:02,115 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:19:02,116 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:19:02,117 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:19:02,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:19:02,309 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:19:02,315 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:19:02,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:19:02,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:19:02,320 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:19:02,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b6da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02, skipping insertion in model container [2018-01-25 00:19:02,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,343 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:19:02,388 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:19:02,508 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:19:02,529 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:19:02,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02 WrapperNode [2018-01-25 00:19:02,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:19:02,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:19:02,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:19:02,539 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:19:02,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,580 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... [2018-01-25 00:19:02,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:19:02,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:19:02,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:19:02,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:19:02,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:19:02,641 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:19:02,642 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:19:02,642 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:19:02,642 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:19:02,643 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:19:03,237 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:19:03,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:19:03 BoogieIcfgContainer [2018-01-25 00:19:03,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:19:03,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:19:03,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:19:03,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:19:03,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:19:02" (1/3) ... [2018-01-25 00:19:03,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f910267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:19:03, skipping insertion in model container [2018-01-25 00:19:03,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:19:02" (2/3) ... [2018-01-25 00:19:03,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f910267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:19:03, skipping insertion in model container [2018-01-25 00:19:03,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:19:03" (3/3) ... [2018-01-25 00:19:03,246 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-queue_true-unreach-call_true-valid-memsafety.i [2018-01-25 00:19:03,253 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:19:03,261 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2018-01-25 00:19:03,304 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:19:03,304 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:19:03,304 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:19:03,305 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:19:03,305 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:19:03,305 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:19:03,305 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:19:03,305 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:19:03,306 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:19:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2018-01-25 00:19:03,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:19:03,333 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:03,334 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:03,334 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878026, now seen corresponding path program 1 times [2018-01-25 00:19:03,340 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:03,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:03,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:03,382 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:03,382 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:03,428 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:03,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:03,499 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:03,499 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:19:03,499 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:03,597 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:19:03,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:19:03,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:19:03,615 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 4 states. [2018-01-25 00:19:03,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:03,827 INFO L93 Difference]: Finished difference Result 331 states and 452 transitions. [2018-01-25 00:19:03,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:19:03,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:19:03,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:03,840 INFO L225 Difference]: With dead ends: 331 [2018-01-25 00:19:03,841 INFO L226 Difference]: Without dead ends: 169 [2018-01-25 00:19:03,845 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:19:03,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-25 00:19:03,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2018-01-25 00:19:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-25 00:19:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2018-01-25 00:19:03,890 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 8 [2018-01-25 00:19:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:03,890 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2018-01-25 00:19:03,890 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:19:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2018-01-25 00:19:03,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:19:03,891 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:03,891 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:03,891 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878027, now seen corresponding path program 1 times [2018-01-25 00:19:03,892 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:03,893 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:03,893 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:03,893 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:03,893 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:03,908 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:03,990 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:03,990 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:19:03,991 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:03,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:19:03,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:19:03,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:19:03,993 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand 4 states. [2018-01-25 00:19:04,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:04,166 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2018-01-25 00:19:04,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:19:04,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:19:04,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:04,168 INFO L225 Difference]: With dead ends: 166 [2018-01-25 00:19:04,169 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 00:19:04,170 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:19:04,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 00:19:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-01-25 00:19:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 00:19:04,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2018-01-25 00:19:04,183 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 8 [2018-01-25 00:19:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:04,184 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2018-01-25 00:19:04,184 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:19:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2018-01-25 00:19:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:19:04,185 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:04,185 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:04,185 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:04,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1424550359, now seen corresponding path program 1 times [2018-01-25 00:19:04,185 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:04,186 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:04,187 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:04,187 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:04,187 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:04,212 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:04,303 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:04,303 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:19:04,303 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:04,304 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:19:04,304 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:19:04,304 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:19:04,304 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 4 states. [2018-01-25 00:19:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:04,456 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-25 00:19:04,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:19:04,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 00:19:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:04,458 INFO L225 Difference]: With dead ends: 162 [2018-01-25 00:19:04,458 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 00:19:04,459 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:19:04,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 00:19:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2018-01-25 00:19:04,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 00:19:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-01-25 00:19:04,471 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 16 [2018-01-25 00:19:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:04,471 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-01-25 00:19:04,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:19:04,471 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-01-25 00:19:04,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:19:04,472 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:04,472 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:04,472 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:04,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1424550360, now seen corresponding path program 1 times [2018-01-25 00:19:04,473 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:04,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:04,474 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:04,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:04,474 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:04,495 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:04,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:04,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:19:04,626 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:04,626 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:19:04,627 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:19:04,627 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:19:04,627 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 7 states. [2018-01-25 00:19:04,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:04,946 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2018-01-25 00:19:04,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 00:19:04,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-25 00:19:04,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:04,949 INFO L225 Difference]: With dead ends: 239 [2018-01-25 00:19:04,949 INFO L226 Difference]: Without dead ends: 235 [2018-01-25 00:19:04,950 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-01-25 00:19:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-01-25 00:19:04,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 158. [2018-01-25 00:19:04,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 00:19:04,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 173 transitions. [2018-01-25 00:19:04,962 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 173 transitions. Word has length 16 [2018-01-25 00:19:04,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:04,963 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 173 transitions. [2018-01-25 00:19:04,963 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:19:04,963 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 173 transitions. [2018-01-25 00:19:04,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:19:04,963 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:04,963 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:04,964 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:04,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1101672517, now seen corresponding path program 1 times [2018-01-25 00:19:04,964 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:04,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:04,965 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:04,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:04,965 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:04,982 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:05,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:05,057 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:05,057 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:19:05,057 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:05,058 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:19:05,058 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:19:05,058 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:19:05,059 INFO L87 Difference]: Start difference. First operand 158 states and 173 transitions. Second operand 5 states. [2018-01-25 00:19:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:05,323 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2018-01-25 00:19:05,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:19:05,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:19:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:05,325 INFO L225 Difference]: With dead ends: 260 [2018-01-25 00:19:05,325 INFO L226 Difference]: Without dead ends: 259 [2018-01-25 00:19:05,325 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:19:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-01-25 00:19:05,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 157. [2018-01-25 00:19:05,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 00:19:05,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2018-01-25 00:19:05,338 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 18 [2018-01-25 00:19:05,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:05,339 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2018-01-25 00:19:05,339 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:19:05,339 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2018-01-25 00:19:05,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:19:05,340 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:05,340 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:05,340 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:05,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1101672518, now seen corresponding path program 1 times [2018-01-25 00:19:05,340 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:05,341 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:05,342 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:05,342 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:05,342 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:05,358 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:05,395 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:05,396 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:19:05,396 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:05,396 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:19:05,396 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:19:05,396 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:19:05,396 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 5 states. [2018-01-25 00:19:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:05,570 INFO L93 Difference]: Finished difference Result 250 states and 271 transitions. [2018-01-25 00:19:05,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:19:05,570 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:19:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:05,571 INFO L225 Difference]: With dead ends: 250 [2018-01-25 00:19:05,572 INFO L226 Difference]: Without dead ends: 249 [2018-01-25 00:19:05,572 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:19:05,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-25 00:19:05,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 156. [2018-01-25 00:19:05,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 00:19:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2018-01-25 00:19:05,581 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 18 [2018-01-25 00:19:05,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:05,581 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2018-01-25 00:19:05,582 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:19:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2018-01-25 00:19:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:19:05,583 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:05,583 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:05,583 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:05,583 INFO L82 PathProgramCache]: Analyzing trace with hash -82522180, now seen corresponding path program 1 times [2018-01-25 00:19:05,583 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:05,584 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:05,584 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:05,584 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:05,584 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:05,601 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:05,708 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:05,708 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:19:05,708 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:05,708 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:19:05,709 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:19:05,709 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:19:05,709 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand 9 states. [2018-01-25 00:19:06,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:06,138 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2018-01-25 00:19:06,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:19:06,139 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:19:06,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:06,140 INFO L225 Difference]: With dead ends: 160 [2018-01-25 00:19:06,140 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 00:19:06,141 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 00:19:06,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 00:19:06,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-01-25 00:19:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 00:19:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2018-01-25 00:19:06,148 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 22 [2018-01-25 00:19:06,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:06,149 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2018-01-25 00:19:06,149 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:19:06,149 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2018-01-25 00:19:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:19:06,149 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:06,149 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:06,150 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:06,150 INFO L82 PathProgramCache]: Analyzing trace with hash -82522179, now seen corresponding path program 1 times [2018-01-25 00:19:06,150 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:06,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:06,151 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:06,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:06,151 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:06,167 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:06,309 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:06,309 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:19:06,309 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:06,310 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:19:06,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:19:06,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:19:06,310 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 10 states. [2018-01-25 00:19:06,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:06,901 INFO L93 Difference]: Finished difference Result 226 states and 240 transitions. [2018-01-25 00:19:06,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:19:06,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 00:19:06,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:06,902 INFO L225 Difference]: With dead ends: 226 [2018-01-25 00:19:06,902 INFO L226 Difference]: Without dead ends: 219 [2018-01-25 00:19:06,903 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2018-01-25 00:19:06,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-25 00:19:06,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2018-01-25 00:19:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-25 00:19:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2018-01-25 00:19:06,910 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 22 [2018-01-25 00:19:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:06,910 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2018-01-25 00:19:06,910 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:19:06,910 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2018-01-25 00:19:06,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:19:06,911 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:06,911 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:06,911 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:06,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1060471439, now seen corresponding path program 1 times [2018-01-25 00:19:06,912 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:06,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:06,912 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:06,912 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:06,912 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:06,923 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:07,050 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:07,050 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:19:07,050 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:07,050 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 00:19:07,050 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 00:19:07,051 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:19:07,051 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand 6 states. [2018-01-25 00:19:07,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:07,284 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2018-01-25 00:19:07,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:19:07,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-01-25 00:19:07,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:07,285 INFO L225 Difference]: With dead ends: 258 [2018-01-25 00:19:07,286 INFO L226 Difference]: Without dead ends: 222 [2018-01-25 00:19:07,286 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:19:07,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-25 00:19:07,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 198. [2018-01-25 00:19:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-25 00:19:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 228 transitions. [2018-01-25 00:19:07,297 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 228 transitions. Word has length 29 [2018-01-25 00:19:07,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:07,297 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 228 transitions. [2018-01-25 00:19:07,297 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 00:19:07,297 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 228 transitions. [2018-01-25 00:19:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:19:07,298 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:07,299 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:07,299 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:07,299 INFO L82 PathProgramCache]: Analyzing trace with hash 109889057, now seen corresponding path program 1 times [2018-01-25 00:19:07,299 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:07,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:07,300 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:07,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:07,300 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:07,309 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:07,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:07,333 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:07,333 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:19:07,333 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:07,333 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 00:19:07,334 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 00:19:07,334 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:19:07,334 INFO L87 Difference]: Start difference. First operand 198 states and 228 transitions. Second operand 3 states. [2018-01-25 00:19:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:07,376 INFO L93 Difference]: Finished difference Result 361 states and 407 transitions. [2018-01-25 00:19:07,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 00:19:07,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-25 00:19:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:07,378 INFO L225 Difference]: With dead ends: 361 [2018-01-25 00:19:07,378 INFO L226 Difference]: Without dead ends: 181 [2018-01-25 00:19:07,379 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 00:19:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-25 00:19:07,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2018-01-25 00:19:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-25 00:19:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 176 transitions. [2018-01-25 00:19:07,387 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 176 transitions. Word has length 29 [2018-01-25 00:19:07,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:07,387 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 176 transitions. [2018-01-25 00:19:07,387 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 00:19:07,388 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2018-01-25 00:19:07,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 00:19:07,389 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:07,389 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:07,389 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:07,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1428666095, now seen corresponding path program 1 times [2018-01-25 00:19:07,389 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:07,390 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:07,390 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:07,391 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:07,391 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:07,401 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:07,453 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:19:07,453 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:19:07,454 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:19:07,454 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:19:07,454 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:19:07,454 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:19:07,454 INFO L87 Difference]: Start difference. First operand 163 states and 176 transitions. Second operand 4 states. [2018-01-25 00:19:07,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:19:07,571 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2018-01-25 00:19:07,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:19:07,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-25 00:19:07,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:19:07,572 INFO L225 Difference]: With dead ends: 166 [2018-01-25 00:19:07,572 INFO L226 Difference]: Without dead ends: 163 [2018-01-25 00:19:07,572 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:19:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-25 00:19:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-01-25 00:19:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-25 00:19:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 175 transitions. [2018-01-25 00:19:07,579 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 175 transitions. Word has length 30 [2018-01-25 00:19:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:19:07,579 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 175 transitions. [2018-01-25 00:19:07,579 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:19:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 175 transitions. [2018-01-25 00:19:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 00:19:07,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:19:07,580 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:19:07,580 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr60EnsuresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:19:07,581 INFO L82 PathProgramCache]: Analyzing trace with hash -578814549, now seen corresponding path program 1 times [2018-01-25 00:19:07,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:19:07,581 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:07,581 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:19:07,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:19:07,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:19:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:19:07,591 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:19:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:19:07,717 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:19:07,717 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:19:07,718 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-01-25 00:19:07,721 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [108], [113], [117], [165], [232], [354], [356], [359], [363], [365], [370], [374], [414], [420], [421], [422], [424], [425], [434], [435], [439], [440], [441] [2018-01-25 00:19:07,769 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:19:07,769 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