java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-queue_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 06:17:42,140 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 06:17:42,142 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 06:17:42,157 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 06:17:42,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 06:17:42,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 06:17:42,160 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 06:17:42,162 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 06:17:42,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 06:17:42,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 06:17:42,165 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 06:17:42,165 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 06:17:42,166 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 06:17:42,166 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 06:17:42,167 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 06:17:42,170 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 06:17:42,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 06:17:42,174 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 06:17:42,175 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 06:17:42,177 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 06:17:42,179 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 06:17:42,179 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 06:17:42,179 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 06:17:42,180 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 06:17:42,181 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 06:17:42,183 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 06:17:42,183 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 06:17:42,183 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 06:17:42,184 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 06:17:42,184 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 06:17:42,184 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 06:17:42,185 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_smtcomp.epf [2018-01-25 06:17:42,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 06:17:42,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 06:17:42,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 06:17:42,196 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 06:17:42,196 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 06:17:42,196 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 06:17:42,197 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 06:17:42,197 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 06:17:42,197 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 06:17:42,198 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 06:17:42,198 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 06:17:42,198 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 06:17:42,198 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 06:17:42,198 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 06:17:42,198 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 06:17:42,199 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 06:17:42,199 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 06:17:42,199 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 06:17:42,199 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 06:17:42,199 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 06:17:42,200 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 06:17:42,200 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 06:17:42,200 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 06:17:42,200 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 06:17:42,200 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:17:42,201 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 06:17:42,201 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 06:17:42,201 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 06:17:42,201 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 06:17:42,201 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 06:17:42,202 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 06:17:42,202 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 06:17:42,202 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 06:17:42,202 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 06:17:42,203 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 06:17:42,203 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 06:17:42,237 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 06:17:42,248 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 06:17:42,251 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 06:17:42,252 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 06:17:42,253 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 06:17:42,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:17:42,420 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 06:17:42,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 06:17:42,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 06:17:42,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 06:17:42,433 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 06:17:42,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5977c944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42, skipping insertion in model container [2018-01-25 06:17:42,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,455 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:17:42,500 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 06:17:42,625 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:17:42,645 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 06:17:42,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42 WrapperNode [2018-01-25 06:17:42,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 06:17:42,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 06:17:42,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 06:17:42,655 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 06:17:42,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... [2018-01-25 06:17:42,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 06:17:42,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 06:17:42,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 06:17:42,702 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 06:17:42,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 06:17:42,755 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 06:17:42,755 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 06:17:42,756 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 06:17:42,756 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 06:17:42,757 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 06:17:42,757 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 06:17:42,757 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 06:17:42,757 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 06:17:42,757 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 06:17:42,757 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 06:17:43,368 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 06:17:43,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:17:43 BoogieIcfgContainer [2018-01-25 06:17:43,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 06:17:43,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 06:17:43,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 06:17:43,372 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 06:17:43,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 06:17:42" (1/3) ... [2018-01-25 06:17:43,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f95cb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:17:43, skipping insertion in model container [2018-01-25 06:17:43,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 06:17:42" (2/3) ... [2018-01-25 06:17:43,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f95cb16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 06:17:43, skipping insertion in model container [2018-01-25 06:17:43,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 06:17:43" (3/3) ... [2018-01-25 06:17:43,376 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-queue_true-unreach-call_true-valid-memsafety.i [2018-01-25 06:17:43,383 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 06:17:43,391 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 61 error locations. [2018-01-25 06:17:43,433 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 06:17:43,433 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 06:17:43,433 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 06:17:43,433 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 06:17:43,433 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 06:17:43,434 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 06:17:43,434 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 06:17:43,434 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 06:17:43,435 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 06:17:43,455 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2018-01-25 06:17:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:17:43,462 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:43,463 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:43,463 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 06:17:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878026, now seen corresponding path program 1 times [2018-01-25 06:17:43,469 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:43,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:43,511 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:43,511 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:43,512 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:43,558 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:43,620 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:43,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:43,620 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:43,623 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:43,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:43,725 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:43,728 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 4 states. [2018-01-25 06:17:43,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:43,973 INFO L93 Difference]: Finished difference Result 331 states and 452 transitions. [2018-01-25 06:17:43,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:43,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:17:43,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:43,991 INFO L225 Difference]: With dead ends: 331 [2018-01-25 06:17:43,991 INFO L226 Difference]: Without dead ends: 169 [2018-01-25 06:17:43,997 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:44,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2018-01-25 06:17:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2018-01-25 06:17:44,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-01-25 06:17:44,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 173 transitions. [2018-01-25 06:17:44,049 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 173 transitions. Word has length 8 [2018-01-25 06:17:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:44,049 INFO L432 AbstractCegarLoop]: Abstraction has 161 states and 173 transitions. [2018-01-25 06:17:44,049 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 173 transitions. [2018-01-25 06:17:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 06:17:44,050 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:44,050 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:44,050 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 06:17:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1694878027, now seen corresponding path program 1 times [2018-01-25 06:17:44,051 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:44,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,052 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:44,052 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,052 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:44,069 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:44,172 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:44,172 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:44,172 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:44,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:44,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:44,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:44,174 INFO L87 Difference]: Start difference. First operand 161 states and 173 transitions. Second operand 4 states. [2018-01-25 06:17:44,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:44,384 INFO L93 Difference]: Finished difference Result 166 states and 176 transitions. [2018-01-25 06:17:44,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 06:17:44,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 06:17:44,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:44,387 INFO L225 Difference]: With dead ends: 166 [2018-01-25 06:17:44,387 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 06:17:44,388 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 06:17:44,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 150. [2018-01-25 06:17:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-01-25 06:17:44,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 161 transitions. [2018-01-25 06:17:44,401 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 161 transitions. Word has length 8 [2018-01-25 06:17:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:44,402 INFO L432 AbstractCegarLoop]: Abstraction has 150 states and 161 transitions. [2018-01-25 06:17:44,402 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 161 transitions. [2018-01-25 06:17:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 06:17:44,403 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:44,403 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:44,403 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 06:17:44,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1424550359, now seen corresponding path program 1 times [2018-01-25 06:17:44,404 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:44,405 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,405 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:44,405 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,405 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:44,430 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:44,504 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:44,504 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:44,504 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:44,504 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:44,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:44,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:44,505 INFO L87 Difference]: Start difference. First operand 150 states and 161 transitions. Second operand 4 states. [2018-01-25 06:17:44,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:44,614 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2018-01-25 06:17:44,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:44,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 06:17:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:44,658 INFO L225 Difference]: With dead ends: 162 [2018-01-25 06:17:44,659 INFO L226 Difference]: Without dead ends: 154 [2018-01-25 06:17:44,659 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 06:17:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-01-25 06:17:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 149. [2018-01-25 06:17:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2018-01-25 06:17:44,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2018-01-25 06:17:44,672 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 16 [2018-01-25 06:17:44,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:44,672 INFO L432 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2018-01-25 06:17:44,673 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:44,673 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2018-01-25 06:17:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 06:17:44,673 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:44,674 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:44,674 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 06:17:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1424550360, now seen corresponding path program 1 times [2018-01-25 06:17:44,674 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:44,675 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,675 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:44,676 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:44,676 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:44,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:44,696 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:44,832 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:44,832 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 06:17:44,832 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:44,833 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 06:17:44,833 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 06:17:44,833 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:17:44,833 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand 7 states. [2018-01-25 06:17:45,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:45,203 INFO L93 Difference]: Finished difference Result 239 states and 254 transitions. [2018-01-25 06:17:45,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-25 06:17:45,204 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-25 06:17:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:45,207 INFO L225 Difference]: With dead ends: 239 [2018-01-25 06:17:45,207 INFO L226 Difference]: Without dead ends: 235 [2018-01-25 06:17:45,207 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 06:17:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-01-25 06:17:45,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 158. [2018-01-25 06:17:45,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-25 06:17:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 173 transitions. [2018-01-25 06:17:45,219 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 173 transitions. Word has length 16 [2018-01-25 06:17:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:45,220 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 173 transitions. [2018-01-25 06:17:45,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 06:17:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 173 transitions. [2018-01-25 06:17:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:17:45,220 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:45,220 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:45,221 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 06:17:45,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1101672517, now seen corresponding path program 1 times [2018-01-25 06:17:45,221 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:45,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,222 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:45,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,222 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:45,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:45,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:45,304 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:45,304 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:45,304 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:45,304 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:45,305 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:45,305 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:45,305 INFO L87 Difference]: Start difference. First operand 158 states and 173 transitions. Second operand 5 states. [2018-01-25 06:17:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:45,567 INFO L93 Difference]: Finished difference Result 260 states and 283 transitions. [2018-01-25 06:17:45,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 06:17:45,568 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 06:17:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:45,569 INFO L225 Difference]: With dead ends: 260 [2018-01-25 06:17:45,569 INFO L226 Difference]: Without dead ends: 259 [2018-01-25 06:17:45,570 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-25 06:17:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2018-01-25 06:17:45,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 157. [2018-01-25 06:17:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2018-01-25 06:17:45,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2018-01-25 06:17:45,583 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 18 [2018-01-25 06:17:45,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:45,583 INFO L432 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2018-01-25 06:17:45,583 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:45,583 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2018-01-25 06:17:45,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 06:17:45,584 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:45,584 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:45,584 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 06:17:45,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1101672518, now seen corresponding path program 1 times [2018-01-25 06:17:45,585 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:45,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,586 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:45,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,586 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:45,599 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:45,635 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:45,636 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:45,636 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:45,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 06:17:45,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 06:17:45,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 06:17:45,637 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand 5 states. [2018-01-25 06:17:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:45,824 INFO L93 Difference]: Finished difference Result 250 states and 271 transitions. [2018-01-25 06:17:45,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 06:17:45,824 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 06:17:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:45,825 INFO L225 Difference]: With dead ends: 250 [2018-01-25 06:17:45,826 INFO L226 Difference]: Without dead ends: 249 [2018-01-25 06:17:45,826 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 06:17:45,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2018-01-25 06:17:45,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 156. [2018-01-25 06:17:45,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-01-25 06:17:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2018-01-25 06:17:45,836 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 18 [2018-01-25 06:17:45,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:45,836 INFO L432 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2018-01-25 06:17:45,837 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 06:17:45,837 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2018-01-25 06:17:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:17:45,838 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:45,838 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:45,838 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 06:17:45,838 INFO L82 PathProgramCache]: Analyzing trace with hash -82522180, now seen corresponding path program 1 times [2018-01-25 06:17:45,838 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:45,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,839 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:45,839 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:45,839 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:45,856 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:45,932 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:45,932 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 06:17:45,932 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:45,932 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 06:17:45,933 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 06:17:45,933 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:17:45,933 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand 9 states. [2018-01-25 06:17:46,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:46,311 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2018-01-25 06:17:46,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 06:17:46,311 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 06:17:46,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:46,312 INFO L225 Difference]: With dead ends: 160 [2018-01-25 06:17:46,313 INFO L226 Difference]: Without dead ends: 159 [2018-01-25 06:17:46,313 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-01-25 06:17:46,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-01-25 06:17:46,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2018-01-25 06:17:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-25 06:17:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 168 transitions. [2018-01-25 06:17:46,320 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 168 transitions. Word has length 22 [2018-01-25 06:17:46,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:46,320 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 168 transitions. [2018-01-25 06:17:46,320 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 06:17:46,320 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 168 transitions. [2018-01-25 06:17:46,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 06:17:46,321 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:46,321 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 06:17:46,321 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 06:17:46,322 INFO L82 PathProgramCache]: Analyzing trace with hash -82522179, now seen corresponding path program 1 times [2018-01-25 06:17:46,322 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:46,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:46,322 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:46,322 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:46,323 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:46,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:46,477 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:46,477 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 06:17:46,478 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:46,478 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 06:17:46,478 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 06:17:46,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 06:17:46,478 INFO L87 Difference]: Start difference. First operand 155 states and 168 transitions. Second operand 10 states. [2018-01-25 06:17:47,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:47,145 INFO L93 Difference]: Finished difference Result 226 states and 240 transitions. [2018-01-25 06:17:47,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 06:17:47,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 06:17:47,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:47,147 INFO L225 Difference]: With dead ends: 226 [2018-01-25 06:17:47,147 INFO L226 Difference]: Without dead ends: 219 [2018-01-25 06:17:47,147 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 06:17:47,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-01-25 06:17:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 139. [2018-01-25 06:17:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-25 06:17:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 151 transitions. [2018-01-25 06:17:47,153 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 151 transitions. Word has length 22 [2018-01-25 06:17:47,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:47,154 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 151 transitions. [2018-01-25 06:17:47,154 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 06:17:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 151 transitions. [2018-01-25 06:17:47,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 06:17:47,155 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:47,156 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 06:17:47,156 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 06:17:47,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1060471439, now seen corresponding path program 1 times [2018-01-25 06:17:47,156 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:47,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,157 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:47,157 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,157 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:47,169 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:47,365 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:47,366 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 06:17:47,366 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:47,366 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-25 06:17:47,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-25 06:17:47,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-25 06:17:47,366 INFO L87 Difference]: Start difference. First operand 139 states and 151 transitions. Second operand 6 states. [2018-01-25 06:17:47,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:47,594 INFO L93 Difference]: Finished difference Result 258 states and 282 transitions. [2018-01-25 06:17:47,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 06:17:47,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2018-01-25 06:17:47,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:47,596 INFO L225 Difference]: With dead ends: 258 [2018-01-25 06:17:47,596 INFO L226 Difference]: Without dead ends: 222 [2018-01-25 06:17:47,597 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-01-25 06:17:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-25 06:17:47,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 198. [2018-01-25 06:17:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-25 06:17:47,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 228 transitions. [2018-01-25 06:17:47,608 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 228 transitions. Word has length 29 [2018-01-25 06:17:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:47,608 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 228 transitions. [2018-01-25 06:17:47,608 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-25 06:17:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 228 transitions. [2018-01-25 06:17:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 06:17:47,610 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:47,610 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 06:17:47,610 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 06:17:47,610 INFO L82 PathProgramCache]: Analyzing trace with hash 109889057, now seen corresponding path program 1 times [2018-01-25 06:17:47,610 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:47,611 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,612 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:47,612 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,612 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:47,621 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:47,635 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:47,635 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 06:17:47,635 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:47,635 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-25 06:17:47,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-25 06:17:47,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-25 06:17:47,636 INFO L87 Difference]: Start difference. First operand 198 states and 228 transitions. Second operand 3 states. [2018-01-25 06:17:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:47,686 INFO L93 Difference]: Finished difference Result 361 states and 407 transitions. [2018-01-25 06:17:47,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-25 06:17:47,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-01-25 06:17:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:47,688 INFO L225 Difference]: With dead ends: 361 [2018-01-25 06:17:47,688 INFO L226 Difference]: Without dead ends: 181 [2018-01-25 06:17:47,689 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 06:17:47,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-01-25 06:17:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2018-01-25 06:17:47,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-25 06:17:47,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 176 transitions. [2018-01-25 06:17:47,696 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 176 transitions. Word has length 29 [2018-01-25 06:17:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:47,696 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 176 transitions. [2018-01-25 06:17:47,696 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-25 06:17:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 176 transitions. [2018-01-25 06:17:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-25 06:17:47,698 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:47,698 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 06:17:47,698 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 06:17:47,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1428666095, now seen corresponding path program 1 times [2018-01-25 06:17:47,698 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:47,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,699 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:47,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,700 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:47,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:47,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 06:17:47,764 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 06:17:47,764 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 06:17:47,764 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 06:17:47,764 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 06:17:47,764 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 06:17:47,764 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 06:17:47,765 INFO L87 Difference]: Start difference. First operand 163 states and 176 transitions. Second operand 4 states. [2018-01-25 06:17:47,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 06:17:47,888 INFO L93 Difference]: Finished difference Result 166 states and 178 transitions. [2018-01-25 06:17:47,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 06:17:47,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-25 06:17:47,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 06:17:47,890 INFO L225 Difference]: With dead ends: 166 [2018-01-25 06:17:47,890 INFO L226 Difference]: Without dead ends: 163 [2018-01-25 06:17:47,891 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 06:17:47,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-01-25 06:17:47,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2018-01-25 06:17:47,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2018-01-25 06:17:47,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 175 transitions. [2018-01-25 06:17:47,901 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 175 transitions. Word has length 30 [2018-01-25 06:17:47,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 06:17:47,901 INFO L432 AbstractCegarLoop]: Abstraction has 163 states and 175 transitions. [2018-01-25 06:17:47,901 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 06:17:47,901 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 175 transitions. [2018-01-25 06:17:47,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-01-25 06:17:47,902 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 06:17:47,902 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 06:17:47,903 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 06:17:47,903 INFO L82 PathProgramCache]: Analyzing trace with hash -578814549, now seen corresponding path program 1 times [2018-01-25 06:17:47,903 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 06:17:47,904 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,904 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 06:17:47,904 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 06:17:47,904 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 06:17:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 06:17:47,914 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 06:17:47,990 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 06:17:47,990 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 06:17:47,990 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 06:17:47,991 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-01-25 06:17:47,993 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 06:17:48,040 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 06:17:48,041 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 06:18:12,302 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-25 06:18:12,304 INFO L268 AbstractInterpreter]: Visited 32 different actions 34 times. Merged at 2 different actions 2 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-01-25 06:18:12,320 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown