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_mostprecise.epf -i ../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr_true-valid-memsafety_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:19:36,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:19:36,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:19:36,728 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:19:36,728 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:19:36,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:19:36,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:19:36,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:19:36,735 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:19:36,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:19:36,737 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:19:36,737 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:19:36,738 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:19:36,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:19:36,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:19:36,742 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:19:36,744 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:19:36,746 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:19:36,748 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:19:36,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:19:36,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 20:19:36,751 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 20:19:36,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 20:19:36,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 20:19:36,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 20:19:36,755 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 20:19:36,755 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 20:19:36,756 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 20:19:36,756 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 20:19:36,756 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:19:36,757 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:19:36,757 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_mostprecise.epf [2018-01-24 20:19:36,767 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:19:36,767 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:19:36,768 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:19:36,768 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:19:36,768 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:19:36,769 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:19:36,769 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:19:36,769 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:19:36,769 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:19:36,770 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:19:36,770 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:19:36,770 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:19:36,771 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:19:36,771 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:19:36,771 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:19:36,771 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:19:36,771 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:19:36,772 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:19:36,772 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:19:36,772 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:19:36,772 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:19:36,772 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:19:36,773 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:19:36,773 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:19:36,773 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:19:36,773 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:19:36,773 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:19:36,774 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:19:36,774 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:19:36,774 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:19:36,774 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:19:36,774 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:19:36,774 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:19:36,775 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:19:36,775 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:19:36,776 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:19:36,776 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:19:36,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:19:36,825 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:19:36,829 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:19:36,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:19:36,831 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:19:36,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext/tree_parent_ptr_true-valid-memsafety_false-termination.i [2018-01-24 20:19:37,020 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:19:37,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:19:37,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:19:37,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:19:37,035 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:19:37,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fb77e6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37, skipping insertion in model container [2018-01-24 20:19:37,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,058 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:19:37,099 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:19:37,220 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:19:37,240 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:19:37,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37 WrapperNode [2018-01-24 20:19:37,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:19:37,247 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:19:37,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:19:37,248 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:19:37,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... [2018-01-24 20:19:37,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:19:37,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:19:37,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:19:37,287 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:19:37,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:19:37,335 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:19:37,335 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:19:37,335 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:19:37,335 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:19:37,335 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:19:37,335 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:19:37,335 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:19:37,336 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:19:37,899 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:19:37,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:19:37 BoogieIcfgContainer [2018-01-24 20:19:37,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:19:37,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:19:37,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:19:37,902 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:19:37,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:19:37" (1/3) ... [2018-01-24 20:19:37,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:19:37, skipping insertion in model container [2018-01-24 20:19:37,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:19:37" (2/3) ... [2018-01-24 20:19:37,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:19:37, skipping insertion in model container [2018-01-24 20:19:37,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:19:37" (3/3) ... [2018-01-24 20:19:37,905 INFO L105 eAbstractionObserver]: Analyzing ICFG tree_parent_ptr_true-valid-memsafety_false-termination.i [2018-01-24 20:19:37,911 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:19:37,918 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 75 error locations. [2018-01-24 20:19:37,958 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:19:37,958 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:19:37,959 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:19:37,959 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:19:37,959 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:19:37,959 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:19:37,959 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:19:37,959 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:19:37,960 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:19:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2018-01-24 20:19:37,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:19:37,994 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:37,995 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:37,996 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:38,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1759036932, now seen corresponding path program 1 times [2018-01-24 20:19:38,004 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:38,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:38,049 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:38,049 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:38,049 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:38,099 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:38,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:38,170 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:38,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:38,171 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:38,175 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:38,189 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:38,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:38,193 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2018-01-24 20:19:38,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:38,529 INFO L93 Difference]: Finished difference Result 329 states and 357 transitions. [2018-01-24 20:19:38,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:38,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:19:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:38,541 INFO L225 Difference]: With dead ends: 329 [2018-01-24 20:19:38,541 INFO L226 Difference]: Without dead ends: 174 [2018-01-24 20:19:38,545 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:38,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-01-24 20:19:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 158. [2018-01-24 20:19:38,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2018-01-24 20:19:38,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 168 transitions. [2018-01-24 20:19:38,592 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 168 transitions. Word has length 8 [2018-01-24 20:19:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:38,592 INFO L432 AbstractCegarLoop]: Abstraction has 158 states and 168 transitions. [2018-01-24 20:19:38,592 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 168 transitions. [2018-01-24 20:19:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-01-24 20:19:38,593 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:38,593 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:38,593 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:38,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1759036931, now seen corresponding path program 1 times [2018-01-24 20:19:38,594 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:38,594 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:38,594 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:38,595 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:38,595 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:38,615 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:38,709 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:38,709 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:38,709 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:38,711 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:38,711 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:38,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:38,712 INFO L87 Difference]: Start difference. First operand 158 states and 168 transitions. Second operand 4 states. [2018-01-24 20:19:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:38,930 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2018-01-24 20:19:38,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:38,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-01-24 20:19:38,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:38,933 INFO L225 Difference]: With dead ends: 158 [2018-01-24 20:19:38,933 INFO L226 Difference]: Without dead ends: 155 [2018-01-24 20:19:38,935 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:38,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2018-01-24 20:19:38,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2018-01-24 20:19:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:19:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2018-01-24 20:19:38,948 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 8 [2018-01-24 20:19:38,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:38,948 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2018-01-24 20:19:38,948 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2018-01-24 20:19:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 20:19:38,949 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:38,949 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:38,949 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:38,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2080332291, now seen corresponding path program 1 times [2018-01-24 20:19:38,950 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:38,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:38,951 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:38,951 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:38,951 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:38,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:38,968 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:39,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:39,007 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:39,007 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:39,007 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:39,007 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:39,008 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:39,008 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:39,008 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2018-01-24 20:19:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:39,201 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2018-01-24 20:19:39,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:19:39,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-01-24 20:19:39,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:39,203 INFO L225 Difference]: With dead ends: 179 [2018-01-24 20:19:39,203 INFO L226 Difference]: Without dead ends: 161 [2018-01-24 20:19:39,203 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:39,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-01-24 20:19:39,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 140. [2018-01-24 20:19:39,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2018-01-24 20:19:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2018-01-24 20:19:39,215 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 15 [2018-01-24 20:19:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:39,216 INFO L432 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2018-01-24 20:19:39,216 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2018-01-24 20:19:39,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-01-24 20:19:39,217 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:39,217 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:39,217 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:39,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2080332290, now seen corresponding path program 1 times [2018-01-24 20:19:39,218 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:39,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:39,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,219 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:39,238 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:39,325 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:39,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:39,326 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:39,326 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:39,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:39,327 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:39,327 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 5 states. [2018-01-24 20:19:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:39,565 INFO L93 Difference]: Finished difference Result 210 states and 228 transitions. [2018-01-24 20:19:39,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:19:39,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-01-24 20:19:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:39,568 INFO L225 Difference]: With dead ends: 210 [2018-01-24 20:19:39,568 INFO L226 Difference]: Without dead ends: 196 [2018-01-24 20:19:39,569 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-24 20:19:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-01-24 20:19:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 176. [2018-01-24 20:19:39,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 20:19:39,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2018-01-24 20:19:39,579 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 15 [2018-01-24 20:19:39,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:39,580 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2018-01-24 20:19:39,580 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2018-01-24 20:19:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:19:39,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:39,580 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:39,580 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:39,581 INFO L82 PathProgramCache]: Analyzing trace with hash -2037600517, now seen corresponding path program 1 times [2018-01-24 20:19:39,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:39,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:39,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,582 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:39,595 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:39,635 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:39,635 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:39,635 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:39,636 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:39,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:39,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:39,636 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 4 states. [2018-01-24 20:19:39,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:39,750 INFO L93 Difference]: Finished difference Result 192 states and 219 transitions. [2018-01-24 20:19:39,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:19:39,750 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:19:39,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:39,751 INFO L225 Difference]: With dead ends: 192 [2018-01-24 20:19:39,751 INFO L226 Difference]: Without dead ends: 189 [2018-01-24 20:19:39,751 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-24 20:19:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 177. [2018-01-24 20:19:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-24 20:19:39,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 206 transitions. [2018-01-24 20:19:39,761 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 206 transitions. Word has length 17 [2018-01-24 20:19:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:39,762 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 206 transitions. [2018-01-24 20:19:39,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 206 transitions. [2018-01-24 20:19:39,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-24 20:19:39,763 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:39,763 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:39,763 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:39,763 INFO L82 PathProgramCache]: Analyzing trace with hash -2037600516, now seen corresponding path program 1 times [2018-01-24 20:19:39,763 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:39,764 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,764 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:39,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,765 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:39,779 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:39,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:39,845 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:39,845 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:39,845 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:39,845 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:39,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:39,846 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:39,846 INFO L87 Difference]: Start difference. First operand 177 states and 206 transitions. Second operand 4 states. [2018-01-24 20:19:39,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:39,983 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2018-01-24 20:19:39,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:39,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-01-24 20:19:39,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:39,984 INFO L225 Difference]: With dead ends: 182 [2018-01-24 20:19:39,984 INFO L226 Difference]: Without dead ends: 179 [2018-01-24 20:19:39,985 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-01-24 20:19:39,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 175. [2018-01-24 20:19:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 20:19:39,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2018-01-24 20:19:39,992 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 17 [2018-01-24 20:19:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:39,993 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2018-01-24 20:19:39,993 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:39,993 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2018-01-24 20:19:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-24 20:19:39,994 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:39,994 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:39,994 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:39,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1339674347, now seen corresponding path program 1 times [2018-01-24 20:19:39,994 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:39,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,995 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:39,995 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:39,995 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:40,009 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:40,046 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:40,046 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:40,046 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:40,047 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:40,047 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:40,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:40,047 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand 4 states. [2018-01-24 20:19:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:40,074 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2018-01-24 20:19:40,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:40,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-01-24 20:19:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:40,075 INFO L225 Difference]: With dead ends: 179 [2018-01-24 20:19:40,076 INFO L226 Difference]: Without dead ends: 176 [2018-01-24 20:19:40,076 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-01-24 20:19:40,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 175. [2018-01-24 20:19:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2018-01-24 20:19:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 202 transitions. [2018-01-24 20:19:40,082 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 202 transitions. Word has length 22 [2018-01-24 20:19:40,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:40,083 INFO L432 AbstractCegarLoop]: Abstraction has 175 states and 202 transitions. [2018-01-24 20:19:40,083 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:40,083 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 202 transitions. [2018-01-24 20:19:40,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:19:40,083 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:40,083 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] [2018-01-24 20:19:40,084 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:40,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1419766941, now seen corresponding path program 1 times [2018-01-24 20:19:40,084 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:40,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,085 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:40,085 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,085 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:40,098 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:40,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:40,150 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:40,150 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:40,150 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:40,150 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:40,150 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:40,150 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:40,151 INFO L87 Difference]: Start difference. First operand 175 states and 202 transitions. Second operand 5 states. [2018-01-24 20:19:40,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:40,264 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2018-01-24 20:19:40,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:19:40,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:19:40,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:40,266 INFO L225 Difference]: With dead ends: 194 [2018-01-24 20:19:40,266 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 20:19:40,266 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:19:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 20:19:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 174. [2018-01-24 20:19:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-01-24 20:19:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 202 transitions. [2018-01-24 20:19:40,271 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 202 transitions. Word has length 23 [2018-01-24 20:19:40,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:40,271 INFO L432 AbstractCegarLoop]: Abstraction has 174 states and 202 transitions. [2018-01-24 20:19:40,271 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:40,272 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 202 transitions. [2018-01-24 20:19:40,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:19:40,272 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:40,272 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] [2018-01-24 20:19:40,273 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:40,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1419766940, now seen corresponding path program 1 times [2018-01-24 20:19:40,273 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:40,274 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,274 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:40,274 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,274 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:40,286 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:40,335 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:40,335 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:40,335 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:40,335 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:40,336 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:40,336 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:40,336 INFO L87 Difference]: Start difference. First operand 174 states and 202 transitions. Second operand 5 states. [2018-01-24 20:19:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:40,521 INFO L93 Difference]: Finished difference Result 196 states and 225 transitions. [2018-01-24 20:19:40,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:19:40,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-24 20:19:40,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:40,523 INFO L225 Difference]: With dead ends: 196 [2018-01-24 20:19:40,523 INFO L226 Difference]: Without dead ends: 194 [2018-01-24 20:19:40,523 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:19:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-01-24 20:19:40,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2018-01-24 20:19:40,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-24 20:19:40,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 203 transitions. [2018-01-24 20:19:40,531 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 203 transitions. Word has length 23 [2018-01-24 20:19:40,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:40,532 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 203 transitions. [2018-01-24 20:19:40,532 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:40,532 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 203 transitions. [2018-01-24 20:19:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 20:19:40,533 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:40,533 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:40,533 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:40,533 INFO L82 PathProgramCache]: Analyzing trace with hash 916114990, now seen corresponding path program 1 times [2018-01-24 20:19:40,533 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:40,534 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,534 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:40,535 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,535 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:40,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:40,578 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:40,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:40,578 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:40,579 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:19:40,579 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:19:40,579 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:19:40,579 INFO L87 Difference]: Start difference. First operand 176 states and 203 transitions. Second operand 3 states. [2018-01-24 20:19:40,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:40,592 INFO L93 Difference]: Finished difference Result 344 states and 400 transitions. [2018-01-24 20:19:40,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:19:40,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-01-24 20:19:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:40,594 INFO L225 Difference]: With dead ends: 344 [2018-01-24 20:19:40,594 INFO L226 Difference]: Without dead ends: 178 [2018-01-24 20:19:40,595 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:19:40,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-01-24 20:19:40,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-01-24 20:19:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-24 20:19:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2018-01-24 20:19:40,603 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 23 [2018-01-24 20:19:40,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:40,603 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2018-01-24 20:19:40,603 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:19:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2018-01-24 20:19:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 20:19:40,604 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:40,604 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:40,605 INFO L371 AbstractCegarLoop]: === Iteration 11 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:40,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1108120181, now seen corresponding path program 1 times [2018-01-24 20:19:40,605 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:40,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,606 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:40,606 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:40,606 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:40,621 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:40,810 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:40,810 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:19:40,810 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:40,811 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:19:40,811 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:19:40,811 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:19:40,811 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 6 states. [2018-01-24 20:19:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:41,042 INFO L93 Difference]: Finished difference Result 389 states and 450 transitions. [2018-01-24 20:19:41,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 20:19:41,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-01-24 20:19:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:41,044 INFO L225 Difference]: With dead ends: 389 [2018-01-24 20:19:41,044 INFO L226 Difference]: Without dead ends: 221 [2018-01-24 20:19:41,045 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:19:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-01-24 20:19:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2018-01-24 20:19:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 20:19:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 226 transitions. [2018-01-24 20:19:41,053 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 226 transitions. Word has length 25 [2018-01-24 20:19:41,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:41,054 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 226 transitions. [2018-01-24 20:19:41,054 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:19:41,054 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 226 transitions. [2018-01-24 20:19:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:19:41,055 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:41,055 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] [2018-01-24 20:19:41,055 INFO L371 AbstractCegarLoop]: === Iteration 12 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:41,055 INFO L82 PathProgramCache]: Analyzing trace with hash 561139669, now seen corresponding path program 1 times [2018-01-24 20:19:41,056 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:41,056 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:41,057 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:41,057 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:41,057 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:41,075 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:41,372 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:41,372 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-01-24 20:19:41,372 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:41,372 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-24 20:19:41,373 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-24 20:19:41,373 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-01-24 20:19:41,373 INFO L87 Difference]: Start difference. First operand 194 states and 226 transitions. Second operand 12 states. [2018-01-24 20:19:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:42,177 INFO L93 Difference]: Finished difference Result 211 states and 246 transitions. [2018-01-24 20:19:42,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:19:42,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-01-24 20:19:42,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:42,179 INFO L225 Difference]: With dead ends: 211 [2018-01-24 20:19:42,179 INFO L226 Difference]: Without dead ends: 210 [2018-01-24 20:19:42,179 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2018-01-24 20:19:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-01-24 20:19:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 195. [2018-01-24 20:19:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 20:19:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 228 transitions. [2018-01-24 20:19:42,188 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 228 transitions. Word has length 26 [2018-01-24 20:19:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:42,188 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 228 transitions. [2018-01-24 20:19:42,188 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-24 20:19:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 228 transitions. [2018-01-24 20:19:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:19:42,190 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:42,190 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] [2018-01-24 20:19:42,190 INFO L371 AbstractCegarLoop]: === Iteration 13 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:42,190 INFO L82 PathProgramCache]: Analyzing trace with hash 561139670, now seen corresponding path program 1 times [2018-01-24 20:19:42,190 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:42,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:42,191 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:42,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:42,192 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:42,208 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:42,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:42,603 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:42,603 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-24 20:19:42,603 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:42,603 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 20:19:42,603 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 20:19:42,603 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2018-01-24 20:19:42,604 INFO L87 Difference]: Start difference. First operand 195 states and 228 transitions. Second operand 13 states. [2018-01-24 20:19:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:43,392 INFO L93 Difference]: Finished difference Result 266 states and 294 transitions. [2018-01-24 20:19:43,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-24 20:19:43,393 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 26 [2018-01-24 20:19:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:43,394 INFO L225 Difference]: With dead ends: 266 [2018-01-24 20:19:43,394 INFO L226 Difference]: Without dead ends: 263 [2018-01-24 20:19:43,395 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2018-01-24 20:19:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2018-01-24 20:19:43,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 199. [2018-01-24 20:19:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2018-01-24 20:19:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 233 transitions. [2018-01-24 20:19:43,405 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 233 transitions. Word has length 26 [2018-01-24 20:19:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:43,406 INFO L432 AbstractCegarLoop]: Abstraction has 199 states and 233 transitions. [2018-01-24 20:19:43,406 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 20:19:43,406 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 233 transitions. [2018-01-24 20:19:43,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:19:43,407 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:43,407 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] [2018-01-24 20:19:43,407 INFO L371 AbstractCegarLoop]: === Iteration 14 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:43,408 INFO L82 PathProgramCache]: Analyzing trace with hash -106162311, now seen corresponding path program 1 times [2018-01-24 20:19:43,408 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:43,408 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:43,409 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:43,409 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:43,409 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:43,419 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:43,469 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:43,470 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:43,470 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:43,470 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:43,470 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:43,470 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:43,471 INFO L87 Difference]: Start difference. First operand 199 states and 233 transitions. Second operand 5 states. [2018-01-24 20:19:43,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:43,665 INFO L93 Difference]: Finished difference Result 293 states and 346 transitions. [2018-01-24 20:19:43,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:19:43,665 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 20:19:43,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:43,667 INFO L225 Difference]: With dead ends: 293 [2018-01-24 20:19:43,667 INFO L226 Difference]: Without dead ends: 292 [2018-01-24 20:19:43,668 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:19:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-01-24 20:19:43,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 198. [2018-01-24 20:19:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-01-24 20:19:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 231 transitions. [2018-01-24 20:19:43,678 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 231 transitions. Word has length 26 [2018-01-24 20:19:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:43,678 INFO L432 AbstractCegarLoop]: Abstraction has 198 states and 231 transitions. [2018-01-24 20:19:43,678 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 231 transitions. [2018-01-24 20:19:43,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:19:43,679 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:43,679 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] [2018-01-24 20:19:43,679 INFO L371 AbstractCegarLoop]: === Iteration 15 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:43,679 INFO L82 PathProgramCache]: Analyzing trace with hash -106162310, now seen corresponding path program 1 times [2018-01-24 20:19:43,679 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:43,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:43,680 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:43,680 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:43,681 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:43,691 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:43,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:43,745 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:43,745 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:43,745 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:43,746 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:43,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:43,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:43,746 INFO L87 Difference]: Start difference. First operand 198 states and 231 transitions. Second operand 5 states. [2018-01-24 20:19:44,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:44,327 INFO L93 Difference]: Finished difference Result 282 states and 334 transitions. [2018-01-24 20:19:44,327 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:19:44,327 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2018-01-24 20:19:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:44,328 INFO L225 Difference]: With dead ends: 282 [2018-01-24 20:19:44,329 INFO L226 Difference]: Without dead ends: 281 [2018-01-24 20:19:44,329 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:19:44,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2018-01-24 20:19:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 197. [2018-01-24 20:19:44,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-01-24 20:19:44,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 229 transitions. [2018-01-24 20:19:44,337 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 229 transitions. Word has length 26 [2018-01-24 20:19:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:44,337 INFO L432 AbstractCegarLoop]: Abstraction has 197 states and 229 transitions. [2018-01-24 20:19:44,337 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 229 transitions. [2018-01-24 20:19:44,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:19:44,337 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:44,337 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] [2018-01-24 20:19:44,337 INFO L371 AbstractCegarLoop]: === Iteration 16 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:44,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1585416537, now seen corresponding path program 1 times [2018-01-24 20:19:44,338 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:44,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:44,338 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:44,338 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:44,339 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:44,348 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:44,611 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:44,611 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:19:44,611 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:44,612 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:19:44,612 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:19:44,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:19:44,612 INFO L87 Difference]: Start difference. First operand 197 states and 229 transitions. Second operand 9 states. [2018-01-24 20:19:45,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:45,227 INFO L93 Difference]: Finished difference Result 244 states and 286 transitions. [2018-01-24 20:19:45,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:19:45,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-24 20:19:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:45,229 INFO L225 Difference]: With dead ends: 244 [2018-01-24 20:19:45,229 INFO L226 Difference]: Without dead ends: 243 [2018-01-24 20:19:45,229 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:19:45,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-01-24 20:19:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 196. [2018-01-24 20:19:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-01-24 20:19:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 227 transitions. [2018-01-24 20:19:45,239 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 227 transitions. Word has length 29 [2018-01-24 20:19:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:45,239 INFO L432 AbstractCegarLoop]: Abstraction has 196 states and 227 transitions. [2018-01-24 20:19:45,239 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:19:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 227 transitions. [2018-01-24 20:19:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-24 20:19:45,240 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:45,240 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:45,240 INFO L371 AbstractCegarLoop]: === Iteration 17 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:45,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1585416536, now seen corresponding path program 1 times [2018-01-24 20:19:45,240 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:45,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:45,241 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:45,241 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:45,242 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:45,255 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:45,413 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:45,413 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-01-24 20:19:45,413 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:45,414 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-01-24 20:19:45,414 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-01-24 20:19:45,414 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-01-24 20:19:45,414 INFO L87 Difference]: Start difference. First operand 196 states and 227 transitions. Second operand 9 states. [2018-01-24 20:19:45,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:45,898 INFO L93 Difference]: Finished difference Result 243 states and 284 transitions. [2018-01-24 20:19:45,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:19:45,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2018-01-24 20:19:45,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:45,900 INFO L225 Difference]: With dead ends: 243 [2018-01-24 20:19:45,900 INFO L226 Difference]: Without dead ends: 242 [2018-01-24 20:19:45,900 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-01-24 20:19:45,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-01-24 20:19:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 195. [2018-01-24 20:19:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-01-24 20:19:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 225 transitions. [2018-01-24 20:19:45,905 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 225 transitions. Word has length 29 [2018-01-24 20:19:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:45,906 INFO L432 AbstractCegarLoop]: Abstraction has 195 states and 225 transitions. [2018-01-24 20:19:45,906 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-01-24 20:19:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 225 transitions. [2018-01-24 20:19:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:19:45,906 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:45,906 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:45,907 INFO L371 AbstractCegarLoop]: === Iteration 18 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:45,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2109118679, now seen corresponding path program 1 times [2018-01-24 20:19:45,907 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:45,907 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:45,907 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:45,908 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:45,908 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:45,916 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:45,942 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:45,942 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:45,942 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:45,942 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:45,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:45,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:45,942 INFO L87 Difference]: Start difference. First operand 195 states and 225 transitions. Second operand 4 states. [2018-01-24 20:19:46,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:46,037 INFO L93 Difference]: Finished difference Result 212 states and 243 transitions. [2018-01-24 20:19:46,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:19:46,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 20:19:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:46,038 INFO L225 Difference]: With dead ends: 212 [2018-01-24 20:19:46,038 INFO L226 Difference]: Without dead ends: 211 [2018-01-24 20:19:46,038 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:46,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2018-01-24 20:19:46,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 194. [2018-01-24 20:19:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-01-24 20:19:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 224 transitions. [2018-01-24 20:19:46,044 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 224 transitions. Word has length 30 [2018-01-24 20:19:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:46,044 INFO L432 AbstractCegarLoop]: Abstraction has 194 states and 224 transitions. [2018-01-24 20:19:46,044 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 224 transitions. [2018-01-24 20:19:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:19:46,045 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:46,045 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:46,045 INFO L371 AbstractCegarLoop]: === Iteration 19 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:46,045 INFO L82 PathProgramCache]: Analyzing trace with hash 2109118680, now seen corresponding path program 1 times [2018-01-24 20:19:46,045 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:46,046 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,046 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:46,046 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,046 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:46,057 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:46,121 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:46,121 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:46,121 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:46,122 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:46,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:46,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:46,123 INFO L87 Difference]: Start difference. First operand 194 states and 224 transitions. Second operand 4 states. [2018-01-24 20:19:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:46,339 INFO L93 Difference]: Finished difference Result 241 states and 274 transitions. [2018-01-24 20:19:46,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:46,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-01-24 20:19:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:46,341 INFO L225 Difference]: With dead ends: 241 [2018-01-24 20:19:46,341 INFO L226 Difference]: Without dead ends: 239 [2018-01-24 20:19:46,341 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2018-01-24 20:19:46,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 192. [2018-01-24 20:19:46,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-24 20:19:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 222 transitions. [2018-01-24 20:19:46,349 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 222 transitions. Word has length 30 [2018-01-24 20:19:46,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:46,349 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 222 transitions. [2018-01-24 20:19:46,350 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:46,350 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 222 transitions. [2018-01-24 20:19:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:19:46,350 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:46,350 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:46,350 INFO L371 AbstractCegarLoop]: === Iteration 20 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:46,351 INFO L82 PathProgramCache]: Analyzing trace with hash -160241763, now seen corresponding path program 1 times [2018-01-24 20:19:46,351 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:46,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,352 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:46,352 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,352 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:46,361 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:46,403 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:46,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:46,403 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:46,404 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:46,404 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:46,404 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:46,404 INFO L87 Difference]: Start difference. First operand 192 states and 222 transitions. Second operand 5 states. [2018-01-24 20:19:46,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:46,590 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2018-01-24 20:19:46,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:19:46,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-24 20:19:46,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:46,592 INFO L225 Difference]: With dead ends: 284 [2018-01-24 20:19:46,592 INFO L226 Difference]: Without dead ends: 283 [2018-01-24 20:19:46,592 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:19:46,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-01-24 20:19:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 191. [2018-01-24 20:19:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-24 20:19:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 220 transitions. [2018-01-24 20:19:46,601 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 220 transitions. Word has length 30 [2018-01-24 20:19:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:46,602 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 220 transitions. [2018-01-24 20:19:46,602 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 220 transitions. [2018-01-24 20:19:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-24 20:19:46,602 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:46,602 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:19:46,603 INFO L371 AbstractCegarLoop]: === Iteration 21 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:46,603 INFO L82 PathProgramCache]: Analyzing trace with hash -160241762, now seen corresponding path program 1 times [2018-01-24 20:19:46,603 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:46,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,604 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:46,604 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,604 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:46,614 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:46,688 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:46,688 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:46,688 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:46,688 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:46,689 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:46,689 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:46,689 INFO L87 Difference]: Start difference. First operand 191 states and 220 transitions. Second operand 5 states. [2018-01-24 20:19:46,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:46,925 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2018-01-24 20:19:46,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:19:46,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-24 20:19:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:46,927 INFO L225 Difference]: With dead ends: 273 [2018-01-24 20:19:46,927 INFO L226 Difference]: Without dead ends: 272 [2018-01-24 20:19:46,927 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:19:46,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2018-01-24 20:19:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 190. [2018-01-24 20:19:46,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-24 20:19:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 218 transitions. [2018-01-24 20:19:46,938 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 218 transitions. Word has length 30 [2018-01-24 20:19:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:46,938 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 218 transitions. [2018-01-24 20:19:46,938 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 218 transitions. [2018-01-24 20:19:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-24 20:19:46,939 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:46,939 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] [2018-01-24 20:19:46,939 INFO L371 AbstractCegarLoop]: === Iteration 22 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:46,940 INFO L82 PathProgramCache]: Analyzing trace with hash 958169774, now seen corresponding path program 1 times [2018-01-24 20:19:46,940 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:46,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,941 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:46,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:46,941 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:46,954 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:46,995 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:46,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:46,995 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:46,996 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:46,996 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:46,996 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:46,996 INFO L87 Difference]: Start difference. First operand 190 states and 218 transitions. Second operand 4 states. [2018-01-24 20:19:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:47,139 INFO L93 Difference]: Finished difference Result 194 states and 223 transitions. [2018-01-24 20:19:47,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:47,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-01-24 20:19:47,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:47,142 INFO L225 Difference]: With dead ends: 194 [2018-01-24 20:19:47,142 INFO L226 Difference]: Without dead ends: 187 [2018-01-24 20:19:47,143 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-01-24 20:19:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2018-01-24 20:19:47,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-01-24 20:19:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2018-01-24 20:19:47,150 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 31 [2018-01-24 20:19:47,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:47,150 INFO L432 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2018-01-24 20:19:47,150 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:47,150 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2018-01-24 20:19:47,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:19:47,151 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:47,151 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] [2018-01-24 20:19:47,151 INFO L371 AbstractCegarLoop]: === Iteration 23 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:47,151 INFO L82 PathProgramCache]: Analyzing trace with hash 53737817, now seen corresponding path program 1 times [2018-01-24 20:19:47,151 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:47,151 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:47,152 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:47,152 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:47,152 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:47,161 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:47,185 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:47,185 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:47,185 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:47,185 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:47,186 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:47,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:47,186 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 4 states. [2018-01-24 20:19:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:47,303 INFO L93 Difference]: Finished difference Result 191 states and 220 transitions. [2018-01-24 20:19:47,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:19:47,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-24 20:19:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:47,304 INFO L225 Difference]: With dead ends: 191 [2018-01-24 20:19:47,304 INFO L226 Difference]: Without dead ends: 190 [2018-01-24 20:19:47,304 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:47,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-24 20:19:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 181. [2018-01-24 20:19:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2018-01-24 20:19:47,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 209 transitions. [2018-01-24 20:19:47,313 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 209 transitions. Word has length 32 [2018-01-24 20:19:47,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:47,313 INFO L432 AbstractCegarLoop]: Abstraction has 181 states and 209 transitions. [2018-01-24 20:19:47,313 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:47,314 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 209 transitions. [2018-01-24 20:19:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:19:47,314 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:47,314 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] [2018-01-24 20:19:47,314 INFO L371 AbstractCegarLoop]: === Iteration 24 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:47,315 INFO L82 PathProgramCache]: Analyzing trace with hash 53737818, now seen corresponding path program 1 times [2018-01-24 20:19:47,315 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:47,315 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:47,316 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:47,316 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:47,316 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:47,327 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:47,365 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:47,365 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-24 20:19:47,366 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:47,366 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-24 20:19:47,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-24 20:19:47,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-24 20:19:47,366 INFO L87 Difference]: Start difference. First operand 181 states and 209 transitions. Second operand 4 states. [2018-01-24 20:19:47,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:47,527 INFO L93 Difference]: Finished difference Result 219 states and 249 transitions. [2018-01-24 20:19:47,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-24 20:19:47,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-01-24 20:19:47,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:47,528 INFO L225 Difference]: With dead ends: 219 [2018-01-24 20:19:47,529 INFO L226 Difference]: Without dead ends: 217 [2018-01-24 20:19:47,529 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-01-24 20:19:47,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 179. [2018-01-24 20:19:47,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-01-24 20:19:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2018-01-24 20:19:47,534 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 32 [2018-01-24 20:19:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:47,534 INFO L432 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2018-01-24 20:19:47,534 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-24 20:19:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2018-01-24 20:19:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:19:47,535 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:47,535 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] [2018-01-24 20:19:47,535 INFO L371 AbstractCegarLoop]: === Iteration 25 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:47,535 INFO L82 PathProgramCache]: Analyzing trace with hash 611367904, now seen corresponding path program 1 times [2018-01-24 20:19:47,535 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:47,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:47,536 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:47,536 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:47,536 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:47,545 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:47,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:47,661 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:47,661 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:19:47,662 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:47,662 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:19:47,662 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:19:47,662 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:19:47,662 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand 10 states. [2018-01-24 20:19:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:48,025 INFO L93 Difference]: Finished difference Result 228 states and 265 transitions. [2018-01-24 20:19:48,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-24 20:19:48,025 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 20:19:48,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:48,026 INFO L225 Difference]: With dead ends: 228 [2018-01-24 20:19:48,026 INFO L226 Difference]: Without dead ends: 227 [2018-01-24 20:19:48,027 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-01-24 20:19:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2018-01-24 20:19:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 178. [2018-01-24 20:19:48,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-01-24 20:19:48,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2018-01-24 20:19:48,032 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 32 [2018-01-24 20:19:48,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:48,032 INFO L432 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2018-01-24 20:19:48,032 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:19:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2018-01-24 20:19:48,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:19:48,033 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:48,033 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] [2018-01-24 20:19:48,033 INFO L371 AbstractCegarLoop]: === Iteration 26 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:48,033 INFO L82 PathProgramCache]: Analyzing trace with hash 611367905, now seen corresponding path program 1 times [2018-01-24 20:19:48,033 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:48,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:48,034 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:48,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:48,034 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:48,043 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:48,314 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:48,314 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:19:48,314 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:48,315 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:19:48,315 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:19:48,315 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:19:48,315 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 10 states. [2018-01-24 20:19:48,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:48,764 INFO L93 Difference]: Finished difference Result 223 states and 258 transitions. [2018-01-24 20:19:48,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-24 20:19:48,764 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 20:19:48,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:48,765 INFO L225 Difference]: With dead ends: 223 [2018-01-24 20:19:48,765 INFO L226 Difference]: Without dead ends: 222 [2018-01-24 20:19:48,765 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2018-01-24 20:19:48,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-01-24 20:19:48,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 177. [2018-01-24 20:19:48,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-01-24 20:19:48,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 203 transitions. [2018-01-24 20:19:48,771 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 203 transitions. Word has length 32 [2018-01-24 20:19:48,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:48,772 INFO L432 AbstractCegarLoop]: Abstraction has 177 states and 203 transitions. [2018-01-24 20:19:48,772 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:19:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 203 transitions. [2018-01-24 20:19:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:19:48,772 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:48,773 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] [2018-01-24 20:19:48,773 INFO L371 AbstractCegarLoop]: === Iteration 27 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1665872513, now seen corresponding path program 1 times [2018-01-24 20:19:48,773 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:48,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:48,774 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:48,774 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:48,774 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:48,787 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:48,858 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:19:48,858 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 20:19:48,858 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:19:48,858 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:19:48,859 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:19:48,859 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:19:48,859 INFO L87 Difference]: Start difference. First operand 177 states and 203 transitions. Second operand 5 states. [2018-01-24 20:19:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:19:49,011 INFO L93 Difference]: Finished difference Result 214 states and 245 transitions. [2018-01-24 20:19:49,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:19:49,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-01-24 20:19:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:19:49,013 INFO L225 Difference]: With dead ends: 214 [2018-01-24 20:19:49,013 INFO L226 Difference]: Without dead ends: 207 [2018-01-24 20:19:49,013 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:19:49,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-01-24 20:19:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 155. [2018-01-24 20:19:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2018-01-24 20:19:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2018-01-24 20:19:49,022 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 33 [2018-01-24 20:19:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:19:49,022 INFO L432 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2018-01-24 20:19:49,022 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:19:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2018-01-24 20:19:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-24 20:19:49,023 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:19:49,023 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] [2018-01-24 20:19:49,023 INFO L371 AbstractCegarLoop]: === Iteration 28 === [mainErr51RequiresViolation, mainErr69RequiresViolation, mainErr26RequiresViolation, mainErr54RequiresViolation, mainErr66RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr31RequiresViolation, mainErr46RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr58RequiresViolation, mainErr62RequiresViolation, mainErr15RequiresViolation, mainErr49RequiresViolation, mainErr12RequiresViolation, mainErr71RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr55RequiresViolation, mainErr65RequiresViolation, mainErr70RequiresViolation, mainErr17RequiresViolation, mainErr74EnsuresViolation, mainErr42RequiresViolation, mainErr30RequiresViolation, mainErr11RequiresViolation, mainErr57RequiresViolation, mainErr63RequiresViolation, mainErr24RequiresViolation, mainErr44RequiresViolation, mainErr10RequiresViolation, mainErr43RequiresViolation, mainErr4RequiresViolation, mainErr50RequiresViolation, mainErr37RequiresViolation, mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr61RequiresViolation, mainErr59RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr21RequiresViolation, mainErr41RequiresViolation, mainErr56RequiresViolation, mainErr64RequiresViolation, mainErr48RequiresViolation, mainErr72RequiresViolation, mainErr39RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr52RequiresViolation, mainErr68RequiresViolation, mainErr45RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr60RequiresViolation, mainErr9RequiresViolation, mainErr67RequiresViolation, mainErr53RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr8RequiresViolation, mainErr34RequiresViolation, mainErr47RequiresViolation, mainErr73RequiresViolation, mainErr14RequiresViolation, mainErr40RequiresViolation]=== [2018-01-24 20:19:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1679203151, now seen corresponding path program 1 times [2018-01-24 20:19:49,024 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:19:49,024 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:49,025 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:19:49,025 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:19:49,025 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:19:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:19:49,035 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:19:49,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 20:19:49,101 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 20:19:49,101 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 20:19:49,102 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2018-01-24 20:19:49,104 INFO L201 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [10], [13], [19], [21], [24], [153], [154], [155], [156], [159], [165], [171], [172], [173], [175], [176], [179], [180], [183], [202], [204], [223], [225], [234], [235], [236] [2018-01-24 20:19:49,165 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 20:19:49,165 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