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-rb-cnstr_1_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:27:56,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:27:56,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:27:56,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:27:56,765 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:27:56,767 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:27:56,768 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:27:56,769 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:27:56,772 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:27:56,772 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:27:56,773 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:27:56,773 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:27:56,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:27:56,775 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:27:56,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:27:56,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:27:56,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:27:56,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:27:56,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:27:56,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:27:56,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-25 00:27:56,788 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-25 00:27:56,789 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-25 00:27:56,789 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-25 00:27:56,790 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-25 00:27:56,792 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-25 00:27:56,792 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-25 00:27:56,793 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-25 00:27:56,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-25 00:27:56,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:27:56,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:27:56,794 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 00:27:56,804 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:27:56,804 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:27:56,805 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:27:56,805 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:27:56,805 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:27:56,806 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:27:56,806 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:27:56,806 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:27:56,807 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:27:56,807 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:27:56,807 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:27:56,807 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:27:56,807 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:27:56,807 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:27:56,808 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:27:56,808 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:27:56,808 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:27:56,808 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:27:56,808 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:27:56,809 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:27:56,809 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:27:56,809 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:27:56,809 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:27:56,809 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:27:56,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:27:56,810 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:27:56,810 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:27:56,810 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:27:56,810 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:27:56,811 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-25 00:27:56,811 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:27:56,811 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:27:56,811 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:27:56,811 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-25 00:27:56,812 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:27:56,812 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:27:56,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:27:56,860 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:27:56,865 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:27:56,866 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:27:56,867 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:27:56,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-25 00:27:57,025 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:27:57,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:27:57,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:27:57,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:27:57,036 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:27:57,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e82129b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57, skipping insertion in model container [2018-01-25 00:27:57,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,052 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:27:57,092 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:27:57,213 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:27:57,233 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:27:57,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57 WrapperNode [2018-01-25 00:27:57,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:27:57,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:27:57,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:27:57,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:27:57,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (1/1) ... [2018-01-25 00:27:57,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:27:57,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:27:57,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:27:57,280 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:27:57,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (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 00:27:57,328 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:27:57,328 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:27:57,328 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:27:57,328 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-25 00:27:57,328 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-25 00:27:57,328 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-25 00:27:57,329 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:27:57,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:27:57,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:27:57,842 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:27:57,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:27:57 BoogieIcfgContainer [2018-01-25 00:27:57,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:27:57,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-25 00:27:57,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-25 00:27:57,847 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-25 00:27:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.01 12:27:57" (1/3) ... [2018-01-25 00:27:57,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b40fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:27:57, skipping insertion in model container [2018-01-25 00:27:57,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:27:57" (2/3) ... [2018-01-25 00:27:57,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b40fbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.01 12:27:57, skipping insertion in model container [2018-01-25 00:27:57,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:27:57" (3/3) ... [2018-01-25 00:27:57,850 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-25 00:27:57,857 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-25 00:27:57,864 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 59 error locations. [2018-01-25 00:27:57,904 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-25 00:27:57,904 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-25 00:27:57,904 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-25 00:27:57,904 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-25 00:27:57,905 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-25 00:27:57,905 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-25 00:27:57,905 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-25 00:27:57,905 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-25 00:27:57,905 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-25 00:27:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2018-01-25 00:27:57,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:27:57,932 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:27:57,933 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:27:57,933 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:27:57,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1658030564, now seen corresponding path program 1 times [2018-01-25 00:27:57,939 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:27:57,986 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:57,987 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:27:57,987 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:57,987 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:27:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:27:58,029 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:27:58,094 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 00:27:58,096 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:27:58,096 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:27:58,097 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:27:58,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:27:58,110 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:27:58,110 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:27:58,112 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 4 states. [2018-01-25 00:27:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:27:58,474 INFO L93 Difference]: Finished difference Result 218 states and 261 transitions. [2018-01-25 00:27:58,474 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:27:58,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:27:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:27:58,484 INFO L225 Difference]: With dead ends: 218 [2018-01-25 00:27:58,484 INFO L226 Difference]: Without dead ends: 143 [2018-01-25 00:27:58,487 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 00:27:58,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-01-25 00:27:58,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 128. [2018-01-25 00:27:58,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-25 00:27:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 135 transitions. [2018-01-25 00:27:58,523 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 135 transitions. Word has length 8 [2018-01-25 00:27:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:27:58,524 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 135 transitions. [2018-01-25 00:27:58,524 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:27:58,524 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 135 transitions. [2018-01-25 00:27:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-25 00:27:58,524 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:27:58,524 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:27:58,524 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:27:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1658030565, now seen corresponding path program 1 times [2018-01-25 00:27:58,525 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:27:58,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:58,526 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:27:58,526 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:58,526 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:27:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:27:58,542 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:27:58,626 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 00:27:58,626 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:27:58,626 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:27:58,626 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:27:58,628 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:27:58,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:27:58,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:27:58,629 INFO L87 Difference]: Start difference. First operand 128 states and 135 transitions. Second operand 4 states. [2018-01-25 00:27:58,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:27:58,963 INFO L93 Difference]: Finished difference Result 148 states and 154 transitions. [2018-01-25 00:27:58,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-25 00:27:58,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-25 00:27:58,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:27:58,965 INFO L225 Difference]: With dead ends: 148 [2018-01-25 00:27:58,965 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 00:27:58,966 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 00:27:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 00:27:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 132. [2018-01-25 00:27:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-01-25 00:27:58,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2018-01-25 00:27:58,978 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 8 [2018-01-25 00:27:58,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:27:58,979 INFO L432 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2018-01-25 00:27:58,979 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:27:58,979 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2018-01-25 00:27:58,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:27:58,980 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:27:58,980 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:27:58,980 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:27:58,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1172213647, now seen corresponding path program 1 times [2018-01-25 00:27:58,980 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:27:58,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:58,982 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:27:58,982 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:58,982 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:27:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:27:59,006 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:27:59,073 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 00:27:59,073 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:27:59,073 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-25 00:27:59,073 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:27:59,074 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-25 00:27:59,074 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-25 00:27:59,074 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-25 00:27:59,074 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand 4 states. [2018-01-25 00:27:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:27:59,190 INFO L93 Difference]: Finished difference Result 155 states and 163 transitions. [2018-01-25 00:27:59,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:27:59,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-01-25 00:27:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:27:59,191 INFO L225 Difference]: With dead ends: 155 [2018-01-25 00:27:59,192 INFO L226 Difference]: Without dead ends: 140 [2018-01-25 00:27:59,192 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 2 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 00:27:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-25 00:27:59,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 124. [2018-01-25 00:27:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2018-01-25 00:27:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 134 transitions. [2018-01-25 00:27:59,203 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 134 transitions. Word has length 16 [2018-01-25 00:27:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:27:59,204 INFO L432 AbstractCegarLoop]: Abstraction has 124 states and 134 transitions. [2018-01-25 00:27:59,204 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-25 00:27:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 134 transitions. [2018-01-25 00:27:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-25 00:27:59,205 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:27:59,205 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:27:59,205 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:27:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1172213646, now seen corresponding path program 1 times [2018-01-25 00:27:59,206 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:27:59,207 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:59,208 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:27:59,208 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:59,208 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:27:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:27:59,229 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:27:59,347 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 00:27:59,347 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:27:59,348 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-25 00:27:59,348 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:27:59,348 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-25 00:27:59,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-25 00:27:59,349 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:27:59,349 INFO L87 Difference]: Start difference. First operand 124 states and 134 transitions. Second operand 7 states. [2018-01-25 00:27:59,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:27:59,636 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2018-01-25 00:27:59,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:27:59,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-01-25 00:27:59,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:27:59,638 INFO L225 Difference]: With dead ends: 172 [2018-01-25 00:27:59,638 INFO L226 Difference]: Without dead ends: 164 [2018-01-25 00:27:59,639 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:27:59,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2018-01-25 00:27:59,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 139. [2018-01-25 00:27:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-01-25 00:27:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2018-01-25 00:27:59,652 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 16 [2018-01-25 00:27:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:27:59,652 INFO L432 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2018-01-25 00:27:59,652 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-25 00:27:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2018-01-25 00:27:59,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:27:59,654 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:27:59,654 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 00:27:59,654 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:27:59,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1215883307, now seen corresponding path program 1 times [2018-01-25 00:27:59,654 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:27:59,656 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:59,656 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:27:59,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:27:59,657 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:27:59,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:27:59,683 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:27:59,765 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 00:27:59,765 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:27:59,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:27:59,766 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:27:59,766 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:27:59,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:27:59,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:27:59,767 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 5 states. [2018-01-25 00:28:00,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:00,036 INFO L93 Difference]: Finished difference Result 217 states and 238 transitions. [2018-01-25 00:28:00,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:00,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:28:00,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:00,037 INFO L225 Difference]: With dead ends: 217 [2018-01-25 00:28:00,038 INFO L226 Difference]: Without dead ends: 216 [2018-01-25 00:28:00,038 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 00:28:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-01-25 00:28:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 138. [2018-01-25 00:28:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-01-25 00:28:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2018-01-25 00:28:00,045 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 18 [2018-01-25 00:28:00,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:00,045 INFO L432 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2018-01-25 00:28:00,045 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:00,046 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2018-01-25 00:28:00,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-25 00:28:00,046 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:00,046 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 00:28:00,046 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:00,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1215883308, now seen corresponding path program 1 times [2018-01-25 00:28:00,046 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:00,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:00,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:00,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:00,048 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:00,060 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:00,096 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 00:28:00,096 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:00,097 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:00,097 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:00,097 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:00,097 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:00,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:00,097 INFO L87 Difference]: Start difference. First operand 138 states and 150 transitions. Second operand 5 states. [2018-01-25 00:28:00,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:00,249 INFO L93 Difference]: Finished difference Result 193 states and 211 transitions. [2018-01-25 00:28:00,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:28:00,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-01-25 00:28:00,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:00,250 INFO L225 Difference]: With dead ends: 193 [2018-01-25 00:28:00,250 INFO L226 Difference]: Without dead ends: 192 [2018-01-25 00:28:00,250 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 00:28:00,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-25 00:28:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 137. [2018-01-25 00:28:00,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-01-25 00:28:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 148 transitions. [2018-01-25 00:28:00,258 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 148 transitions. Word has length 18 [2018-01-25 00:28:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:00,258 INFO L432 AbstractCegarLoop]: Abstraction has 137 states and 148 transitions. [2018-01-25 00:28:00,258 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:00,259 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 148 transitions. [2018-01-25 00:28:00,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:28:00,259 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:00,260 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 00:28:00,260 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:00,260 INFO L82 PathProgramCache]: Analyzing trace with hash -338658602, now seen corresponding path program 1 times [2018-01-25 00:28:00,260 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:00,261 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:00,262 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:00,262 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:00,262 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:00,279 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:00,381 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 00:28:00,381 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:00,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-25 00:28:00,381 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:00,382 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-25 00:28:00,382 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-25 00:28:00,382 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-25 00:28:00,383 INFO L87 Difference]: Start difference. First operand 137 states and 148 transitions. Second operand 9 states. [2018-01-25 00:28:00,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:00,689 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2018-01-25 00:28:00,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-25 00:28:00,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-01-25 00:28:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:00,691 INFO L225 Difference]: With dead ends: 152 [2018-01-25 00:28:00,691 INFO L226 Difference]: Without dead ends: 151 [2018-01-25 00:28:00,691 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 00:28:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2018-01-25 00:28:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2018-01-25 00:28:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2018-01-25 00:28:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2018-01-25 00:28:00,696 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 22 [2018-01-25 00:28:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:00,696 INFO L432 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2018-01-25 00:28:00,696 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-25 00:28:00,697 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2018-01-25 00:28:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-25 00:28:00,697 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:00,697 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 00:28:00,697 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:00,698 INFO L82 PathProgramCache]: Analyzing trace with hash -338658601, now seen corresponding path program 1 times [2018-01-25 00:28:00,698 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:00,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:00,699 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:00,699 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:00,699 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:00,713 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:00,853 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 00:28:00,853 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:00,853 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-25 00:28:00,853 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:00,854 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-25 00:28:00,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-25 00:28:00,854 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-01-25 00:28:00,855 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand 10 states. [2018-01-25 00:28:01,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:01,412 INFO L93 Difference]: Finished difference Result 165 states and 176 transitions. [2018-01-25 00:28:01,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-25 00:28:01,412 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2018-01-25 00:28:01,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:01,413 INFO L225 Difference]: With dead ends: 165 [2018-01-25 00:28:01,413 INFO L226 Difference]: Without dead ends: 156 [2018-01-25 00:28:01,413 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 00:28:01,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-01-25 00:28:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 130. [2018-01-25 00:28:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-25 00:28:01,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2018-01-25 00:28:01,419 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 22 [2018-01-25 00:28:01,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:01,419 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2018-01-25 00:28:01,419 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-25 00:28:01,419 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2018-01-25 00:28:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-25 00:28:01,421 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:01,421 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:01,421 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:01,421 INFO L82 PathProgramCache]: Analyzing trace with hash 877684228, now seen corresponding path program 1 times [2018-01-25 00:28:01,421 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:01,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:01,423 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:01,423 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:01,423 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:01,433 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:01,498 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 00:28:01,498 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:01,498 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:01,498 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:01,498 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:01,499 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:01,499 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:01,499 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand 5 states. [2018-01-25 00:28:01,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:01,816 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2018-01-25 00:28:01,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:28:01,816 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2018-01-25 00:28:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:01,817 INFO L225 Difference]: With dead ends: 184 [2018-01-25 00:28:01,817 INFO L226 Difference]: Without dead ends: 148 [2018-01-25 00:28:01,818 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:28:01,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2018-01-25 00:28:01,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2018-01-25 00:28:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2018-01-25 00:28:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 139 transitions. [2018-01-25 00:28:01,823 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 139 transitions. Word has length 28 [2018-01-25 00:28:01,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:01,824 INFO L432 AbstractCegarLoop]: Abstraction has 130 states and 139 transitions. [2018-01-25 00:28:01,824 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 139 transitions. [2018-01-25 00:28:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:28:01,825 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:01,825 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 00:28:01,825 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:01,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1451762849, now seen corresponding path program 1 times [2018-01-25 00:28:01,826 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:01,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:01,827 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:01,827 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:01,827 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:01,837 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:01,934 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 00:28:01,934 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:01,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:01,935 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:01,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:01,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:01,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:01,936 INFO L87 Difference]: Start difference. First operand 130 states and 139 transitions. Second operand 5 states. [2018-01-25 00:28:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:02,107 INFO L93 Difference]: Finished difference Result 199 states and 214 transitions. [2018-01-25 00:28:02,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:28:02,107 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 00:28:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:02,108 INFO L225 Difference]: With dead ends: 199 [2018-01-25 00:28:02,109 INFO L226 Difference]: Without dead ends: 138 [2018-01-25 00:28:02,109 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-25 00:28:02,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-01-25 00:28:02,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2018-01-25 00:28:02,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-01-25 00:28:02,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 137 transitions. [2018-01-25 00:28:02,116 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 137 transitions. Word has length 29 [2018-01-25 00:28:02,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:02,116 INFO L432 AbstractCegarLoop]: Abstraction has 129 states and 137 transitions. [2018-01-25 00:28:02,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 137 transitions. [2018-01-25 00:28:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:28:02,117 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:02,118 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 00:28:02,118 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:02,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1220341734, now seen corresponding path program 1 times [2018-01-25 00:28:02,118 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:02,119 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:02,119 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:02,119 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:02,120 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:02,134 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:02,171 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 00:28:02,171 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:02,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:02,171 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:02,172 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:02,172 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:02,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:02,172 INFO L87 Difference]: Start difference. First operand 129 states and 137 transitions. Second operand 5 states. [2018-01-25 00:28:02,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:02,411 INFO L93 Difference]: Finished difference Result 196 states and 210 transitions. [2018-01-25 00:28:02,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-25 00:28:02,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 00:28:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:02,413 INFO L225 Difference]: With dead ends: 196 [2018-01-25 00:28:02,413 INFO L226 Difference]: Without dead ends: 195 [2018-01-25 00:28:02,413 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 00:28:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-01-25 00:28:02,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 128. [2018-01-25 00:28:02,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2018-01-25 00:28:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2018-01-25 00:28:02,419 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 29 [2018-01-25 00:28:02,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:02,419 INFO L432 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2018-01-25 00:28:02,419 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:02,419 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2018-01-25 00:28:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-25 00:28:02,420 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:02,420 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 00:28:02,420 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:02,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1220341733, now seen corresponding path program 1 times [2018-01-25 00:28:02,421 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:02,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:02,422 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:02,422 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:02,422 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:02,436 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:02,527 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 00:28:02,527 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:02,528 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-25 00:28:02,528 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:02,528 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:02,528 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:02,528 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:02,528 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand 5 states. [2018-01-25 00:28:02,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:02,697 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2018-01-25 00:28:02,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:02,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-25 00:28:02,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:02,699 INFO L225 Difference]: With dead ends: 221 [2018-01-25 00:28:02,699 INFO L226 Difference]: Without dead ends: 220 [2018-01-25 00:28:02,699 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 00:28:02,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-01-25 00:28:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 127. [2018-01-25 00:28:02,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2018-01-25 00:28:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 135 transitions. [2018-01-25 00:28:02,707 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 135 transitions. Word has length 29 [2018-01-25 00:28:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:02,708 INFO L432 AbstractCegarLoop]: Abstraction has 127 states and 135 transitions. [2018-01-25 00:28:02,708 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 135 transitions. [2018-01-25 00:28:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 00:28:02,709 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:02,709 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, 1, 1, 1] [2018-01-25 00:28:02,709 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:02,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1085863836, now seen corresponding path program 1 times [2018-01-25 00:28:02,709 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:02,710 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:02,710 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:02,710 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:02,710 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:02,729 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:02,820 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 00:28:02,820 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:02,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-25 00:28:02,820 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:02,821 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-25 00:28:02,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-25 00:28:02,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-25 00:28:02,821 INFO L87 Difference]: Start difference. First operand 127 states and 135 transitions. Second operand 8 states. [2018-01-25 00:28:03,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:03,346 INFO L93 Difference]: Finished difference Result 134 states and 142 transitions. [2018-01-25 00:28:03,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-25 00:28:03,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-01-25 00:28:03,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:03,348 INFO L225 Difference]: With dead ends: 134 [2018-01-25 00:28:03,348 INFO L226 Difference]: Without dead ends: 133 [2018-01-25 00:28:03,348 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2018-01-25 00:28:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-01-25 00:28:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2018-01-25 00:28:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-01-25 00:28:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 134 transitions. [2018-01-25 00:28:03,354 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 134 transitions. Word has length 33 [2018-01-25 00:28:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:03,354 INFO L432 AbstractCegarLoop]: Abstraction has 126 states and 134 transitions. [2018-01-25 00:28:03,354 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-25 00:28:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 134 transitions. [2018-01-25 00:28:03,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-25 00:28:03,356 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:03,356 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, 1, 1, 1] [2018-01-25 00:28:03,356 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:03,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1085863837, now seen corresponding path program 1 times [2018-01-25 00:28:03,356 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:03,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:03,358 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:03,358 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:03,358 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:03,377 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:03,561 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 00:28:03,561 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:03,562 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-25 00:28:03,562 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:03,562 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-25 00:28:03,562 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-25 00:28:03,563 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2018-01-25 00:28:03,563 INFO L87 Difference]: Start difference. First operand 126 states and 134 transitions. Second operand 13 states. [2018-01-25 00:28:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:04,073 INFO L93 Difference]: Finished difference Result 129 states and 136 transitions. [2018-01-25 00:28:04,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-25 00:28:04,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2018-01-25 00:28:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:04,074 INFO L225 Difference]: With dead ends: 129 [2018-01-25 00:28:04,074 INFO L226 Difference]: Without dead ends: 124 [2018-01-25 00:28:04,074 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-01-25 00:28:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-01-25 00:28:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2018-01-25 00:28:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2018-01-25 00:28:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2018-01-25 00:28:04,080 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 33 [2018-01-25 00:28:04,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:04,080 INFO L432 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2018-01-25 00:28:04,080 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-25 00:28:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2018-01-25 00:28:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-01-25 00:28:04,081 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:04,081 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, 1] [2018-01-25 00:28:04,081 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:04,081 INFO L82 PathProgramCache]: Analyzing trace with hash -499110813, now seen corresponding path program 1 times [2018-01-25 00:28:04,081 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:04,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:04,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:04,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:04,082 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:04,092 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:04,233 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:04,234 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-25 00:28:04,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-25 00:28:04,267 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-25 00:28:04,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-25 00:28:04,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-25 00:28:04,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-25 00:28:04,268 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 5 states. [2018-01-25 00:28:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-25 00:28:04,384 INFO L93 Difference]: Finished difference Result 194 states and 207 transitions. [2018-01-25 00:28:04,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-25 00:28:04,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-01-25 00:28:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-25 00:28:04,385 INFO L225 Difference]: With dead ends: 194 [2018-01-25 00:28:04,385 INFO L226 Difference]: Without dead ends: 117 [2018-01-25 00:28:04,385 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-25 00:28:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-01-25 00:28:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2018-01-25 00:28:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2018-01-25 00:28:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 122 transitions. [2018-01-25 00:28:04,392 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 122 transitions. Word has length 35 [2018-01-25 00:28:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-25 00:28:04,392 INFO L432 AbstractCegarLoop]: Abstraction has 115 states and 122 transitions. [2018-01-25 00:28:04,393 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-25 00:28:04,393 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 122 transitions. [2018-01-25 00:28:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-25 00:28:04,394 INFO L314 BasicCegarLoop]: Found error trace [2018-01-25 00:28:04,394 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-25 00:28:04,394 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr17RequiresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr48RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr9RequiresViolation, mainErr58EnsuresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-25 00:28:04,395 INFO L82 PathProgramCache]: Analyzing trace with hash 413563347, now seen corresponding path program 1 times [2018-01-25 00:28:04,395 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-25 00:28:04,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:04,396 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-25 00:28:04,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-25 00:28:04,397 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-25 00:28:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-25 00:28:04,423 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-25 00:28:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-25 00:28:04,920 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-25 00:28:04,921 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-25 00:28:04,922 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-25 00:28:04,924 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [11], [15], [17], [20], [22], [23], [24], [27], [30], [33], [34], [37], [38], [41], [44], [45], [78], [82], [87], [91], [99], [100], [107], [111], [119], [125], [126], [128], [141], [145], [146], [153], [157], [163], [166], [216], [217], [221], [222], [223] [2018-01-25 00:28:04,976 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-25 00:28:04,976 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